Low Carb Tips

Learn The Truth Behind All The Marketing…

Posts Tagged ‘obesity’

Intro To LowCarbTips.org

March 19th, 2008

Welcome to LowCarbTips.org, the site created to help you learn more about low-carbohydrates diets. As with all major lifestyle changes, please consult your medical practitioner before starting…

Low-carbohydrate diets or low carb diets, are food diet programs for dietary health as well as weight loss that advocate restricted carbohydrate consumption, based on research that ties carbohydrate consumption with increased blood insulin levels, and increased insulin with obesity.

Under these various dietary programs, foods containing carbohydrates (like sugar, grains, and starches) are limited or replaced in favor of foods containing more protein and fat. Vegetables, though classified as carbohydrates, are thought to be far healthier than grain-based carbohydrates.

Weight loss
Programs such as the South Beach, Atkins and Zone diets, are claimed to work because they reduce insulin levels, which in turn causes the body to burn its fat for energy.

As a process, these kinds of diets have been in and out of fashion since the Banting diet appeared in the 19th century. But long before modern scientific invention, anecdotal and holistic prescriptions, containing passages about limiting certain foods, including foods of mostly carbohydrates, have appeared throughout history. Although strong evidence suggests, and general agreement claims, that low carb diets can help achieve weight loss, some have been controversial among nutritionists, and their relative safety has been challenged.

Differences between low-carbohydrate diets
Low-carb diets are largely distinguished by the proportions of carb intake they recommend, and the method or methods used to determinine which source or sources of carbohydrates should be consumed and which should be avoided. While all agree that processed sugar should be eliminated, or at the very least greatly reduced, they often differ on the recommended levels of grains, fruits and vegetables, though there is broad agreement that, in general, vegetables are better than fruits, and fruits are better than grains.

Food producers have ascribed a commercial impact to the growing popularity of low-carbohydrate diets in recent years. For example, in May 2004, New World Pasta filed for bankruptcy protection, claiming that low-carbohydrate diets were reducing demand for pasta. In the same month, Krispy Kreme Doughnuts warned investors that its earnings would be below projections, and blamed low-carbohydrate diets on reduced demand for its products.

Other producers have taken advantage of the trend. In response to consumer demand for low-carb foods, the food industry has been marketing low-carb products in recent years and restaurants are increasingly offering low carb menus. These items typically replace carbohydrate-laden wheat flour with high-protein soy flour and replace sugar with artificial sweeteners such as sucralose and sugar alcohols.

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The Evil of Carbohydrates?

March 6th, 2008

In recent years, carbohydrates have been labeled as the nutrition bad guy because of the increases in insulin that occurs during metabolic processes. The secretion of insulin is dependent primarily upon the concentration of blood glucose an increase of blood sugar brings about an increase in the secretion of insulin. Therefore, one function of insulin is to lower glucose.

Conversely, the body increases blood glucose levels by secreting another hormone called glucagon.
If blood glucose levels remain high, and that energy source is not burned shortly after it is consumed, the excess glucose is shuttled off to the muscles for storage. If the muscles have reached their limit in storage capacity, and the body does not require extra glucose to sustain body activities, the excess converts to fat.

Also, as insulin efficiently clears the blood of excess sugar, blood sugar levels oftentimes dip below normal and will produce the infamous sugar blues or a ‘downer’, followed by a possible craving for more sugar consumption. Lastly, while insulin levels are high or active, the body will not burn fat as energy since the body is attempting to utilize as much blood sugar as possible. (Note that fat is not used as a primary energy source while eating an energy-sufficient, healthy diet and fat is used more heavily only during periods of fasting and extensive aerobic-type exercise.) Hence, high-fat-low-carb advocates claim that we should not want:

1) Excess carbs to turn into fat (what do they think happens to excess fat and protein kcal?);

2) To feel groggy with low energy from the insulin ups and downs associated with high carbohydrate (sugar) consumption; and

3) High carbs in the diet since they prevent us from burning body fat.
Although these factors are true, the extent or magnitude of their validity varies in accordance to a number of conditions, such as:

i) How active is the individual?

ii) How many kcal is the individual ingesting (including carbs) per meal?

iii) What comprises an individual’s food and carbohydrate intake?

HOW ACTIVE ARE YOU?

The more active a person, the more carbohydrate he or she should consume. Also, the greater the physical activity, the less insulin the body produces since muscles become insulin sensitive after exercise and glucose tolerance improves as a result. The Food Guide/Pyramid recommends about 50% of kcal in the average individuals diet to be in the form of carbohydrate. Therefore, if a person is very active, the amount should be increased to about 60% since nearly every activity uses a great deal of blood glucose and muscle glycogen for energy, but only a smaller percentage of fat. In fact, athletes who consume a high-carb diet (60%) can maintain higher-intensity exercise longer than those following a low-carb diet (<40%). If a person is relatively sedentary, then much less energy is required, and 30-40% will suffice.

The bloodstream holds about only a one-hour supply of glucose and muscles store about only a half-days energy needs. The sugar requirements of the nervous system (including the brain, an organ that survives on nothing but sugar) for the average adult is approximately 100-150 g per day (and 100 g minimum to prevent ketosis, or 600 kcal). If a 90 kg/200 pound, moderately active man consumes 3,500 kcalories per day, this is equal to 17% of his total caloric intake... just for his nervous system. This does not take into account the remainder of his requirements, the energy required for metabolism of food, or his general activity levels such as work, sports, weight training, reading, housework, walking, etc.

Since this man is moderately active, about 55% of his kcal should be in the form of carbohydrate, or 1,925 kcal, or 481 grams. If he were very active, the percent should probably be closer to 60%. That leaves 20% for fat intake, and 25% for protein intake.

HOW MANY KCAL ARE YOU CONSUMING?

Although national surveys indicate that we are eating less fat now than 20 years ago, we are also eating more kcal. Consequently, a reduction in fat and an increase in carbohydrates are hardly the problem. Rather, it is the total number of kcal consumed that is of vital importance in fat gain. If total caloric intake is below maintenance levels, a person will reduce fat, even if 80% are in the form of carbohydrates. (In fact, Southeast Asian diets are 80-90% carbohydrate, yet these individuals, on average, are not considered overweight but underweight. Conversely, an Inuit [Eskimo] diet is only about 15% carbohydrate intake and most are overweight because of the high fat/calorie intake.)

In regard to energy levels, one pro-fat advocate recollected the days when he trained for 2+ hours per day, while he consumed about 6000 kcal per day, and yet felt tired all the time. At under 200 lbs bodyweight, this person never considered in general how such a large quantity of food caused his insulin levels to go awry. He further attributed his depression and chronic fatigue to his state of hypoglycemia, but the American Diabetic Association has repeatedly stated that there is no evidence in connection to these symptoms, including nervous breakdowns, juvenile delinquency, and childhood behavior problems. Moreover, what most people experience after a meal is a change in blood plasma glucose concentrations and not actual hypoglycemia, which is a serious medical condition that requires medical treatment.

WHAT TYPES OF CARBS DO YOU CONSUME?
The next factor to consider is the composition of meals and dietary carbohydrate consumption. Obviously simple sugars/empty kcal that consist of concentrated sweets and that come from low nutrient (junk) foods should be limited or eaten infrequently. By reducing the concentrated and simple sugars in the diet, this change could contribute to a reduction in the risk of obesity, Type II diabetes, cancer, cardiovascular disease, and tooth decay. But it is not so simple as to suggest that simple sugars create the greatest insulin spike since the effect of food on blood glucose depends on several factors that constitute a meals total glycemic index.

First, the ratio and types of foods must be considered. Fat helps to slow digestion and absorption processes, thereby resulting in a lower and a less steep insulin spike. Hence, a food with a high glycemic index (e.g., potato) can have little effect on rising blood sugar levels if it is eaten with a high fat food (e.g., steak). Fiber tends to have an effect in keeping blood glucose levels down, and eating sucrose with whole wheat bread will not cause problems even for a diabetic. In fact, diabetics can consume up to 50% carb intake, so long as most are low on the glycemic index to keep blood glucose response to a minimum.

Refined starches (white flour and rice, cornstarch, pasta, enriched breads, and breakfast cereals) digest and absorb a little slower than simple sugars, but these foods still should be limited within the diet. Complex starchy carbohydrates, such as sweet potatoes, winter squash, yams, unrefined grains and grain products (e.g., barley, brown rice, buckwheat, oatmeal, and whole wheat products) are the preferred source of energy since they are high in fiber and digest the slowest. Slow digestion means slow glucose conversion, energy which burns/oxidizes during body functions at about the same rate at which it is produced.

Further, the process of digesting carbohydrates as a whole burns more kcal than the digestion of an equivalent amount of fat. However, even refined and whole grain starches break down to produce glucose, with the excess storing as fat tissue. Nonetheless, it is over-consumption of whole grains that results in added fat, a situation which is no different than over-consumption of healthy essential fatty acids or proteins. Hence, it is not carbohydrates that cause problems of excess fat gain, but the choice and amount of carbohydrate.

The form of the food also alters the glycemic response because of the time it takes for the food to be digested and absorbed:

Liquid quickly digested and absorbed.

Dry opposite to the liquid state, resulting in a slower rate of digestion and absorption.

Finely Ground digests and absorbs better than dry because of a larger surface area, and this causes food to break down better and faster.

Raw more difficult to digest than cooked foods; usually harder and tougher and requires more time to be broken down, digested, and absorbed.

Cooked breaks down, digests, and absorbs faster than its raw counterpart.

OTHER REASONS FOR HIGH (SUFFICIENT) CARB INTAKE

A most important complimentary aspect of carbohydrate is its protein-sparing effect. When the body is low in energy or when it is deprived of sufficient kcal, it will use its glucose stores. Once depleted, the body uses protein to manufacture glucose. Consuming sufficient carbohydrates guarantees that minimal protein in the muscles will be catabolized for energy requirements. Conversely, low carb diets accelerate protein catabolism to produce energy by more than 100% than with a moderate to high carbohydrate diet (50-60%).

High-fat advocates further suggest that if carbohydrates in the diet are limited, the body will use fat for energy. Although fat can supply most of the bodys tissues with energy, if need be, it cannot supply energy for the brain, which requires glucose. Even during fasting, fat is used last as an energy source. Neither can fat optimally supply the body with energy required for intense weight training, the main fuel source required from carbohydrates. Even with aerobic exercise, muscles cannot function effectively on fat alone, but will utilize glucose simultaneously. Moreover, as the body hurriedly breaks down fat for energy on a low carb diet, the process is often incomplete and produces by-products that the body must eliminate.

About the Author

(May be reprinted freely if linked to www.ExerciseCertification.com)

Brian D. Johnston is the Director of Education and President of the I.A.R.T. fitness certification and education institute. He has written over 12 books and is a contributor author to the Merck Medical Manual. An international lecturer, Mr. Johnston wears many hats in the fitness and health industries, and can be reached at info@ExerciseCertification.com. Visit his site at www.ExerciseCertification.com for more free articles and offers.

Written By: Brian D. Johnston

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Exercise and Low Carb Diet’s Make Poor Partners

February 19th, 2008

Over the last twenty five years the most common questioned asked me by frustrated exercisers, has been what exercise routine will get me the body I desire? My answer is always the same. They need to start exercising better judgement and learn that exercise alone will not solve their body composition problem. I believe the number one reason for starting an exercise program is weight reduction, even before fitness and health concerns. Exercise by itself is a poor weight manager and it increases the need for better nutritional requirements. I believe I would receive very little disagreement that a combination of nutrition and exercise is the answer to improvement in weight loss ( fat loss ), fitness and health risk concerns. With obesity reaching epidemic rates and the drop out rate of most health clubs remaining high this article intent is to lay the foundation why exercise and low carbohydrate diets are poor partners.

Over the last three decades I have seen extreme changes in the macro nutrients ( proteins, carbohydrates and fats ) combinations in our quests for the ideal body. Everything from high carbohydrate, low fat, high protein, to the current low carbohydrate craze has bombarded us, though the failure rates in managing our weight continue to rise. The problem lies in our bodies ability to adapt to change, especially extreme change. If your goal is to lose fat you must provide your muscle enough quality fuel without being over fueled. This is especially true if your goal to lose fat includes exercise. The secret is not found in elimination of macro nutrients, but in management of them. Understanding how to fuel your muscles prior to exercise sessions and replacing fuel after workouts is critical or your body will break down muscle for fuel.

Understanding how our muscles use the calories we eat as fuel for muscle contraction is the first step in knowing what to do and not to do. A basic nutritional knowledge tells us that proteins repair and rebuild cells, carbohydrates energize cells and fats provide hormonal foundation for cells. When we lack balance in protein, carbohydrates and fats are bodies adjust and can use all three as a source of fuel for muscle contraction and cellular energy. Though energy is needed for all cellular function, the focus of this article is muscle contraction and body composition. All muscle contraction derives energy from adenosine triphosphate or ATP. The primary source of ATP comes from glucose, which is stored in the muscles and liver as glycogen ( glucose and water ). Muscle contraction during anaerobic activity ( resistance training ) can use glycogen directly to form ATP. The process is anaerobic glycolysis, meaning it can use the glucose as energy with very little oxygen ( 90% glucose, 5% oxygen and 5% fatty acid ). Our muscles only store enough ATP for short periods of muscle contraction, when depleted leads to muscle failure. The rest period between weight training sets allows additional ATP to be produced. During early stages of aerobic exercise, ATP is again created primarily from glucose until the heart and lungs provide enough oxygen to the muscles to allow fatty acids to be used to create ATP. So there you have it during resistance training and the beginning stages aerobic training the primary source of fuel is glucose.

This supports my claim that low carb diets and exercise make poor partners. To uncover why, we need to quickly look at the concept behind low carb diets and how they work. Any diet that provides 100 grams or less of carbohydrate daily. This article classifies as low carb diets. This will quickly deplete the glycogen stores in the muscle and liver. This by itself is testimony that our muscles primary source of fuel is glucose. Fatty acids stored in the adipose tissue ( fat cells ) are now released into the blood and processed by the liver and some are turned into glucose ( gluconegenesis ) and some remain fatty acids and both provide ATP for muscle contraction. One of the by products of this process is ketone bodies which can provide energy to brain and nervous system. The problem gluconegenesis ( non glucose turned into glucose ) provides fuel to the muscle less efficiently than glycogenesis ( glucose ). The end result is increased muscle fatigue, decreased muscle power, which leads to poor athletic performance.

A recent study performed at the University of Connecticut showed that exercisers who switched from a balanced diet ( proteins, carbohydrates and fats ) to a low carb diet experience the following drops in athletic performance. There was a 7 – 9 percent drop in muscle power and 6 percent drop in VO2 max of cardiovascular performance. Another factor to consider is the recuperation of muscle between workouts is decreased on low carb diets. So why would someone go on a low carb diet, especially when exercising? Because the initial weight loss that comes from the glycogen depletion is believed to be fat loss. We have become so focused on weight loss, that any weight loss is seen as good. As identified earlier in this article glycogen is a mixture of glucose and water and the majority are stored where? You guessed it, the muscle. A large percentage of the initial weight loss is coming from muscle loss. I dont think any exercisers desire is to have smaller muscles as a result of their exercising. The goal of exercise should be to improve body composition, the percentage or ratio of muscle to body fat. This can only be accomplished by losing fat without the loss of muscle tissue. Maintaining muscle mass is vital to sustainable weight control. The following steps will protect your muscles as your losing fat, while reaching your ideal weight and ideal body composition.

FAT LOSS COACH Keys to losing FAT without losing MUSCLE

1. Cycle fat burning days with recovery days.

The secret to losing fat without losing muscle starts with not being too aggressive or extreme with your reduction of carbohydrates. You need carbohydrate management, not carbohydrate elimination. Over the last 12 years, with more than 10,000 clients Ive found by reducing carbohydrates by 20% of daily needs and within 48 hours replenishing the glycogen in the muscle by eating 100% of daily carbohydrate requirements, allows for fat loss, without muscle loss. In essence you have two fat burning days, then a recovery day. By doing this youll have the best of both worlds. You will experience fat loss that averages between 1-2 pounds weekly, while muscles are being well fed. You never drastically deplete the glycogen stores in the muscle so athletic performance is not affected like on a low carb diet.

2. Exercise on days where you are receiving more carbohydrates.

Exercising on days where muscle are getting more carbohydrates for fuel and taking days off from exercise when you are being aggressive about fat loss. One of the most difficult thoughts for exercisers to accept is that most of the results from exercise come when we are not exercising. They come after we exercise and in direct response to how the muscles receive nutrition after exercise.

3. Exercise 1.5 – 2 hours after eating when blood sugar levels and insulin levels are slowly declining.

As insulin levels increase in response to a rise in blood sugar after a meal, the cells are in an anabolic state ( receiving nutrients ). Insulin is the hormone that feeds are cells. As blood sugar levels drop, insulin levels drop and the pancreas produces the hormone glucagon and nutrients stored in the fat cells are released to the blood and used for energy. The management of this blood sugar rise and drop is important. If blood sugar levels go to high insulin feeds the muscle cells and deposits excess into fat cells. If insulin levels go too low, the muscle cells are being under fed. A slow rise in blood sugar provides good nutrition to the muscles and a slow drop allows glucagon to take from the fat cells. Timing your exercise to this blood sugar decline allows the muscles to receive from the fat cells more effectively. It is important to never exercise without having at least one meal left in your day so that muscles can recuperate from exercise.

Final Thoughts

Long term success managing weight starts with the right approach. If you are overweight, the real problem is that you have too much body fat for how much muscle you possess. A body composition solution is needed, not just a weight loss diet. Your goal should be to lose fat without losing muscle or sacrificing your health in the process. To maintain your results your eating habits must develop life long character. Low carbohydrate diets provide initial weight loss, but at the high cost of losingmuscle and reducing metabolism. They are inadequate sources of fuel to support exercise activity, which is vital in maintaining good health. The risks to your health long term makes low carbohydrate diet’s poor solutions for life long weight management.

By Charles Remington

Nutritionist – Founder of THE FAT LOSS COACH – Customized Fat Loss System – 1303 Highland Ave Cheshire, Ct. 06410 – 203-272-0014 – charlie@thefatlosscoach.com

www.thefatlosscoach

Written By: Charles Remington

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Tags: body composition solution cellular energy Connecticut energy FAT LOSS COACH life long weight management low carb diets low carbohydrate diet Low carbohydrate diets low-carb diet obesity University of Connecticut

Can Low Carb Dieters Eat All They Want And Still Lose Weight?

January 18th, 2008

“The Atkins Nutritional Approach counts grams of carbohydrates instead of calories… If you are losing weight, there is no need to concern yourself with counting calories. ”

Source: atkins.com

You might be doubtful and chances are that mainstream diets are the reason. Of course you couldn’t avoid opinions like the below Q&A posted by Health Care Reality Check:

Q: Can a person eat unlimited calories, and still lose weight, as long as they severely restrict carbohydrates?

A: No, she can not. The basis of ketogenic diets, such as the Atkins Diet, is a severe restriction of carbohydrate calories, which simply causes a net reduction in total calories. Since carbohydrate calories are limited, intake of fat usually increases. This high fat diet causes ketosis (increased blood ketones from fat breakdown), which suppresses hunger, and thus contributes to caloric restriction. — Ellen Coleman, RD, MA, MPH

Is this a correct answer?

Let’s first discuss whether it’s a correct question. Or, rather, is this the real question so frequently asked by dieters. In my experience, this in fact sounds a little bit different but this makes ALL the difference.

This is what real dieters ask:

Q: Can low carb dieters eat all they want, and still lose weight as long as they only eat allowed foods?

A: Yes, they can. The basis of ketogenic diets, such as the Atkins Diet, is a restriction of carbohydrate-containing foods in favor of fat and protein containing foods, which causes the state of ketosis resulting in significant decrease in appetite. Since appetite decreases, most of low carb dieters consume significantly less calories WITHOUT INTENTIONAL CALORIE RESTRICTION.

Is there scientific evidence?

There is.

Study #1 by: Bassett Research Institute in Cooperstown, NY and Durham (N.C.) Veterans Affairs Medical Center.

Reported: Proceedings of North American Association for the Study of Obesity, Oct. 29, 2000, Long Beach, Calif.

Who participated:

18 obese men and women with 30 or more pounds to lose.

Average calorie intake before the study: 2,481 calories a day

Method:

Dr. Atkins’ Book, the “New Diet Revolution” used as instruction for the dieters.

Results:

1. Calorie intake during the most restrictive induction phase (when only 20 g of carbohydrates were allowed) was 1,419 calories a day on average and weight loss was more than 8 pounds on average.

2. Calorie intake during the ongoing weight-loss phase (when carbohydrate intake is being increased gradually, by 5 g a day) dieters ate an average of 1,500 calories a day and lost an additional 3 pounds in two weeks.

3. The calorie reduction was attributed almost completely to carbohydrate abstaining. Intake of fat and protein remained practically the same as before the diet.

4. After 6 months on Atkins diet, 41 overweight people lost an average of 10% of their weight. Most dieters lowered their cholesterol by 5%, but there were a few whose cholesterol increased.

5. 20 out of 41 dieters continued the program, and kept the lost weight off for more than a year.

Study #2 by: Harvard School of Public Health.

Reported: American Association for the Study of Obesity, October 16, 2003

Who participated: 21 overweight volunteers.

Two groups were randomly assigned to either lowfat or low-carb diets with 1,500 calories for women and 1,800 for men; a third group was also low-carb but got an extra 300 calories a day.

Method: All the food was prepared at a restaurant in Cambridge, Massachusetts. Note that most earlier studies including the above Study #1 simply gave out diet plans.

So in this study, dieters were given dinner and a bedtime snack as well as breakfast and lunch for the next day, which made the setting a carefully controlled one. Foods were mostly fish, chicken, salads, vegetables and unsaturated oils. Red meats and saturated fats were limited (as opposed to traditional Atkins menus.)

All meals looked similar but were cooked to different recipes. The low-carb meals were 5% carbs, 15% protein, 65% fat. The low fat group got 55% carbohydrate, 15% protein, 30% fat.

Results:

1. All dieters lost weight, but those on low carb diet lost more than the low fat group — even while consuming MORE calories:

- Group on lower-cal, low-carb diet lost an average of 23 lbs.
- Group on same-calories low-fat diet lost an average of 17 lbs.
- Group on extra 300 calories, low-carb diet lost an average of 20 lbs.

2. Over the course of the study, the group of low carb dieters who got an extra 300 calories a day consumed extra 25,000 calories. That should have added up to about seven pounds. But for some reason, it did not.

Discussion:

“It doesn’t make sense, does it?” said Barbara Rolls of Pennsylvania State University. “It violates the laws of thermodynamics. No one has ever found any miraculous metabolic effects.”

So it violates the laws of thermodynamics, huh? Not so fast! When it comes to calorie counting, the “calorie is a calorie” concept is very deceiving.

Let’s see what we count when we think we count calories. When you burn a piece of wood in a stove, you can directly measure how much heat energy it produces. Then you can claim that you know how many calories a piece of wood contains, right? Not exactly. You should specify what kind of wood it was, dry or wet, how you burned it, etc. Because if you spent another material to start the burning, you should subtract these calories from the total; if the wood was wet you should take into account the calories that the water evaporation took. So even with a piece of wood, it’s not that simple.

Now look at a piece of food. You know how they tell how many calories it contains? Same way they talk about a piece of wood in a stove. It’s the calorie number that the food would produce by being burnt in a stove.

Then in addition to the wood’s calorie estimation (that takes into account the dryness, etc.), you should add many more circumstances: how hard should one chew it before being able to swallow, how hard one’s enzyme system will have work to digest it, will it influence the hormones in charge of fat storing? What about its effect on the hormones in charge of fat burning?

Which chain of reactions will it trigger, activity-wise or metabolism-wise? Will it make one sleepy, thus conserving the energy? Ot will it make one jumpy, thus wasting the energy?

Study #3 by: Laboratory of Applied Physiology, Graduate School of Human and Environmental Studies, Kyoto University, Kyoto 606-8501, Japan

Reported: J Clin Endocrinol Metab. 2003 Dec;88(12):5661-7

Method:

Healthy boys, aged 8-11 yr, were examined for resting energy expenditure and the thermic effect of a meal, which were measured for three hours after a same-calorie but high-fat or a high-carb meals.

Results:

There was no changes after high carbohydrate meals but there was an increase in resting energy expenditure after a high-fat meal.

If the researchers in the Study #2 would have measured resting energy expenditure and the thermic effects of the meals, they would probably have registered the same changes. Then everybody would make a sigh of relief: none of the laws of thermodynamics have been violated: yes, the low-carb dieters COULD INDEED eat more calories and lose more weight than the low-fat group while violating no physical laws because — they just burnt more, all the time, even at rest. It’s that simple.

About the Author

Tanya Zilberter, PhD, is a researcher, health educator, exercise physiologist, and scientific journalist.

In health sciences since 1972, Dr. Zilberter authored several hundred scientific and popular publications, including four print books and more than a dozen of eBooks.

Written By: Tanya Zilberter, PhD

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Tags: American Association for the Study of Obesity Atkins Diet Bassett Research Institute California caloric restriction Cambridge Cooperstown Durham energy energy expenditure exercise physiologist food Graduate School Harvard School of Public Health Japan ketosis Kyoto Kyoto University Laboratory of Applied Physiology Long Beach low fat diet low-carb diet Massachusetts New York North American Association for the Study of Obesity North Carolina obesity Pennsylvania State University thermodynamics Veterans Affairs Medical Center

History And Background Of Low-carb Dieting

December 17th, 2007

The terminology “low-carb” wasn’t really coined until around 1992 when the USDA announced America’s model food pyramid included six to eleven servings daily of grains and starches. However, low-carb dieting dates back more than 100 years before the trendy Atkins diet to 1864 with a pamphlet titled Letter on Corpulence written by William Banting, as close to the first commercial low-carb diet as you could get. Banting had suffered a series of debilitating health problems due mainly to being overweight or “corpulent”. He searched in vain for cures to his weight problem, which many doctors at that time believed to be a necessary side effect of old age. He also tried eating less but he continued to gain weight and have various health problems. He could not understand how the small amounts of food he was eating led to his weight problem:

“Few men have led a more active life – bodily or mentally – from a constitutional anxiety for regularity, precision, and order, during fifty years’ business career, from which I had retired, so that my corpulence and subsequent obesity were not through neglect of necessary bodily activity, nor from excessive eating, drinking, or self indulgence of any kind, except that I partook of the simple aliments of bread, milk, butter, beer, sugar, and potatoes more freely than my age required…”

Many contemporary Americans on the go may recognize Banting’s previous unhealthy daily diet:

“My former dietary table was bread and milk for breakfast, or a pint of tea with plenty of milk, sugar, and buttered toast; meat, beer, much bread (of which I was always very fond) and pastry for dinner, the meal of tea similar to that of breakfast, and generally a fruit tart or bread and milk for supper. I had little comfort and far less sound sleep.”

Just substitute a Pop tart, doughnut or muffin with coffee and plenty of cream and sugar for breakfast, a fast food burger and fries with a super-sized soft drink for lunch and a frozen pot pie or pizza for dinner followed by dessert and you can see how Banting’s diet was so much like the typical fast-paced modern day Americans.

When his physician placed these items on a “forbidden foods list,” Banting lost 50 pounds and 13 inches in one year. He kept it off, living a long and much healthier life.

His new diet plan consisted of a number of meat dishes and he listed it as follows:

“For breakfast, at 9.00 A.M., I take five to six ounces of either beef mutton, kidneys, broiled fish, bacon, or cold meat of any kind except pork or veal; a large cup of tea or coffee (without milk or sugar), a little biscuit, or one ounce of dry toast; making together six ounces solid, nine liquid.

For dinner, at 2.00 P.M., Five or six ounces of any fish except salmon, herrings, or eels, any meat except pork or veal, any vegetable except potato, parsnip, beetroot, turnip, or carrot, one ounce of dry toast, fruit out of a pudding not sweetened any kind of poultry or game, and two or three glasses of good claret, sherry, or Madeira- Champagne, port, and beer forbidden; making together ten to twelve ounces solid, and ten liquid.

For tea, at 6.00 P.M., Two or three ounces of cooked fruit, a rusk or two, and a cup of tea without milk or sugar; making two to four ounces solid, nine liquid.

For supper, at 9.00 P.M. Three or four ounces of meat or fish, similar to dinner, with a glass or two of claret or sherry and water; making four ounces solid and seven liquid.

For nightcap, if required, a tumbler of grog (gin, whisky, or brandy, without sugar)-or a glass or two of claret or sherry.”

So great were the changes in his appearance and health that his friends and acquaintances began to notice and just like today wanted to know what diet he was on. Most important of all Banting could feel and see a difference himself.

“I am told by all who know me that my personal appearance greatly improved, and that I seem to bear the stamp of good health; this may be a matter of opinion or friendly remark, but I can honestly assert that I feel restored in health, “bodily and mentally,” appear to have more muscular power and vigour, eat and drink with a good appetite, and sleep well. All symptoms of acidity, indigestion, and heartburn (with which I was frequently tormented) have vanished. I have left off using boot-hooks, and other such aids, which were indispensable, but being now able to stoop with ease and freedom, are unnecessary. I have lost the feeling of occasional faintness, and what I think a remarkable blessing and comfort is, that I have been able safely to leave off knee-bandages, which I had worn necessarily for many years, and given up the umbilical truss.”

His how-to dieting book became very popular and was translated into multiple languages. However, over time it was abandoned.

Banting noted in Letter on Corpulence that a common health paradox of our time did not exist in his. This was the paradox of obesity, widely believed to be a problem of excess, among the poor. The poor of the 19th century could not afford the refined sugary foods that cause weight gain. But poor people of the 21st century sure can today.

In a recent Associated Press article titled, “Health Paradox: Obesity Attacks Poor”, the reporter noted that many poor families are stretching their food dollars by purchasing unhealthy processed and refined foods. Of one family Barbassa wrote,

“During winter, jobs are scarce, so Caballero feeds her husband and three children the cheapest food she can get: potatoes, bread, tortillas… As processed foods rich in sugar and fat have become cheaper than fruits and vegetables, the poor in particular are paying a high price with obesity rates shooting up, followed by diabetes.”

Unfortunately for the Caballero family, these cheap staples are bad for their health. Fresh meat, low-starch fruits and vegeta-bles may be more expensive and have a shorter shelf life, but they are definitely worth the price in saved medical expenses and better health.

Throughout the years, as “calories” became known, variations of counting them were included in dietary solutions. And a variety of other issues were explored like how many of which foods should be eaten and how frequently.

While Banting’s diet eventually fell out of favor, low-carb diets did begin appearing again in the 20th century. The most famous of these are the Atkins and Scarsdale diets that came to popularity in the 1970s. While Scarsdale has a set 14 day meal plan that must be followed and greatly restricts calories, the Atkins diet allowed for unlimited calorie consumption as long as those calories were from protein, fat and vegetables and carbs intake was kept low.

Atkins and Scarsdale fell out of favor in the 1980′s as the U. S. Department of Agriculture encouraged the consumption of grains and grain products with the USDA food pyramid.

It was only in the 1990′s that we began to see a return to low-carb dieting that seems to be more than a fad. It’s a lifestyle! As more and more people realize the weight loss and other health benefits that are available to people who eat low-carb, the number of diets and stores that sell specialty low-carb products continue to rise.

In a nutshell, most low-carb diets carry the same basic premise: that too much of simple, refined carbohydrates leads to over overproduction of insulin, which leads to the storage of too much fat in the body. This fat storage is especially prominent around the middle.

While there are degrees of difference among the many diets, they all agree on the negative effects that excess insulin production have on our systems.

About the Author

David Riewe is the Editor of Daves Health Buzz. Daves Health Buzz covers a wide variety of health and wellness related topics. Do You Want To Know How to Conquer Obesity? If YES, then Click Below To Read More http://www.daveshealthbuzz.com/conquerobesity

Written By: David Riewe

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Posted in Low Carb

Tags: America Atkins Diet Banting cheapest food diabetes dietary solutions food food burger grain products low carb products low-carb diet obesity physician U. S. Department of Agriculture USDA

The Truth About Low Carb Dieting

December 1st, 2007

Every day you walk down the street it is becoming more and more apparent that the average person is becoming larger and this trend has escalated over recent years. Why are they getting fatter? Here are some reasons…

Less incidental activity
Automated and computerized lifestyle
Longer working hours and less leisure
Increased consumption of processed foods
Our food servings are larger than ever

Being overweight, or obese, has now moved from a social nuisance and domestic embarrassment to an official disease. The American Heart Association has announced obesity is a major risk for heart disease.

Obesity itself has become a major and dangerous epidemic. More than 70% of US adults are overweight and that figure is rapidly increasing.

What do most people do to rid their body of unwanted fat? They diet! Dieting is now a trillion dollar industry and just about every month a new diet is announced. If you do have weight problems how do you find a diet that is safe, effective and sustainable?

What you do is try to find a diet that includes a variety of foods that you can live with
comfortably. You have to take a long-term view and include plenty of exercise. A good diet is one that supplies all of the essential vitamins and minerals, and is not high in fat or protein.

Research on people, who have successfully lost a lot of weight and kept it off long term, shows that the vast majority succeeded by consuming a low fat diet high in fibre coupled with strength training and cardiovascular activity.

Be wary of diets that

Ban a specific food group
Promise a quick fix
Replace a balanced meal with a drink or a snack bar
Make recommendations based on single studies
Make recommendations to help sell a single product

Excess weight does not appear overnight and nor will it disappear overnight! In fact the faster you lose weight, the more likely you are to pile the pounds back on. Seek out a program that will help you maintain long-term body fat losses by providing attainable solutions such as a program that promotes lifestyle changes, healthy eating and regular exercise.

Regular exercise is important (i.e. strength training) as it burns fat, boosts your

metabolism and also increases your energy levels. Dietary changes can lead to initial
weight loss, but this is only for the short term. Exercise is essential for maintaining weight loss for the long term.

Now lets take a closer look at what food is made up of and then you will have a good idea of what to look for in your daily eating plan. Firstly we need a wide range of nutrients to perform various functions for a healthy life.

These nutrients include carbohydrates, proteins and fat and are all present in the food we eat on a daily basis.

The foods containing these nutrients are cereals, legumes, nuts, vegetables, fruits, milk products and flesh foods (fish, meat and poultry).

We need all these nutrients to live and thrive and since we receive them through the food we eat, our food must be well balanced and in the proper proportions. Food is a fuel; the body requires this fuel for energy, which is measured in fats, carbohydrate and protein.

Each of these nutrients provides different amounts of energy and these are measured in calories.

Nutrient Calories per Gram

Carbohydrate 4
Protein 4
Fat 9

Lets look at carbohydrates first, carbohydrates supply energy for our body, they provide fibre for the prevention of disease and taste and texture to food. They are found in cereals, potatoes, fruits and vegetables.

They come in two basic forms, simple and complex. Simple carbs are easily identified by their taste and are sweet. Complex carbs, such as potatoes are pleasant to the taste buds, but are not sweet.

They are then divided into two groups, high fibre and low fibre.

High-fibre foods are the healthiest choices for nutrition and the intake of these foods is associated with a lower incidence of cancer and diabetes. Carbohydrates supply the sort of calories easily burned during cardiovascular exercise.

They are often wrongly feared and considered fattening, but the most important factor in weight control is balancing the energy (calories) consumed.
Please remember:

Energy In is more than Energy Out = Weight gain
Energy In is equal to Energy Out = Weight maintenance
Energy In is less than Energy Out = Weight loss
Different foods affect the ability to exercise at different levels. High levels of exercise
(cardio and strength training) require carbohydrate as a fuel source; at lower levels it is fat.

A lack of carbohydrate in the diet will lead to fatigue, the inability to exercise
effectively, and excess fat consumption. When our food is digested, carbohydrates are broken down into simple sugars.

These sugars are absorbed by the body and used by the muscles or stored as glycogen in the muscles and liver. As our glycogen storage capacity is limited, carbohydrate needs to be continually topped up by the foods we eat.

But the Body has an Unlimited Storage Capacity for Fat!

The average person is extremely vulnerable to fad diets and extreme dieting behaviours. The low carbohydrate diet is one of the latest eating plans to hit the streets. This current diet craze is very popular but there are safer and more effective methods based on scientific research, to reduce body fat levels.

Low Carbohydrate Dieting is Simply Wrong

Why is this? Just as a car runs better on a certain fuel, so does the human body.
Unfortunately the latest low-carbohydrate fad diets are not the fuel mix the human body was designed to run on.

Carbohydrates contain 4 calories per gram, whereas fats contain 9 calories per gram. For weight loss, the priority is to decrease total calorie intake. Reducing the amount of fat in the diet will make the biggest difference in reducing total daily calorie intake and hence weight loss.

Carbohydrate intake is not fattening.
Excess calorie intake is fattening.

If you aren’t having enough carbohydrates in your diet you will experience:

Fatigue due to low blood sugar levels inadequate intake of vitamins and minerals
Low fibre intake, which may affect bowel movements
‘Bad breath due to the breakdown products of fats (called ketones)

The bottom line for carbohydrates and weight loss is to:

Try to balance carbohydrate intake with activity levels
Maintain energy levels by eating carbohydrate rich foods on a regular basis
Carbohydrate rich foods are normally low in fat and nutrient-rich

A real weight loss program includes all the food groups, strength training, and low-level aerobics, a slight decrease in your daily calorie levels and a program that can be followed for life.

Above all try to achieve a balanced diet, eating a balanced variety of foods will help you to feel great every day, ensure better long-term health and improve weight control.

About the Author

Gary is the author of several ebooks, including “Maximum Weight Loss in Ten Weeks” – the complete ebook and time-saving solution for burning away unwanted fat, and “Maximum Weight Gain in Ten Weeks” – easy-to-use and follow techniques that serve as a guide to muscle growth without having to “live in the gym”.

Visit Garys website at http://www.maximumfitness.com/

Written By: Gary Matthews

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Posted in Low Carb

Tags: American Heart Association attainable solutions breakdown products cancer carbohydrates supply energy diabetes energy energy levels food food group food groups food servings heart disease low carbohydrate diet low fat diet milk products obesity time-saving solution United States

Weight Loss – Low Carb Diets

November 23rd, 2007

With all of the conflicting studies and fuzzy interpretation of information, it’s no wonder that confusion reigns when it comes to the value and safety of low-carb diets. It seems like heated debates are raging everywhere!

Whether it’s Atkins, the South Beach or some other low-carb plan, as many as 30 million Americans are following a low-carb diet.

Advocates contend that the high amount of carbohydrates in our diet has led to increasing problems with obesity, diabetes, and other health problems. Critics, on the other hand, attribute obesity and related health problems to over-consumption of calories from any source, and lack of physical activity. Critics also express concern that the lack of grains, fruits, and vegetables in low-carbohydrate diets may lead to deficiencies of some key nutrients, including fiber, vitamin C, folic acid, and several minerals.

Any diet, weather low or high in carbohydrate, can produce significant weight loss during the initial stages of the diet. But remember, the key to successful dieting is in being able to lose the weight permanently. Put another way, what does the scale show a year after going off the diet?

Let’s see if we can debunk some of the mystery about low-carb diets. Below, is a listing of some relevant points taken from recent studies and scientific literature. Please note there may be insufficient information available to answer all questions.

- Differences Between Low-Carb Diets

There are many popular diets designed to lower carbohydrate consumption. Reducing total carbohydrate in the diet means that protein and fat will represent a proportionately greater amount of the total caloric intake.

Atkins and Protein Power diets restrict carbohydrate to a point where the body becomes ketogenic. Other low-carb diets like the Zone and Life Without Bread are less restrictive. Some, like Sugar Busters claim to eliminate only sugars and foods that elevate blood sugar levels excessively.

- What We Know about Low-Carb Diets

Almost all of the studies to date have been small with a wide variety of research objectives. Carbohydrate, caloric intake, diet duration and participant characteristics varied greatly. Most of the studies to date have two things in common: None of the studies had participants with a mean age over 53 and none of the controlled studies lasted longer than 90 days.

Information on older adults and long-term results are scarce. Many diet studies fail to monitor the amount of exercise, and therefore caloric expenditure, while participants are dieting. This helps to explain discrepancies between studies.

The weight loss on low-carb diets is a function of caloric restriction and diet duration, and not with reduced carbohydrate intake. This finding suggests that if you want to lose weight, you should eat fewer calories and do so over a long time period.

Little evidence exists on the long-range safety of low-carb diets. Despite the medical community concerns, no short-term adverse effects have been found on cholesterol, glucose, insulin and blood-pressure levels among participants on the diets. But, adverse effects may not show up because of the short period of the studies. Researchers note that losing weight typically leads to an improvement in these levels anyway, and this may offset an increase caused by a high fat diet. The long range weight change for low-carb and other types of diets is similar.

Most low-carb diets cause ketosis. Some of the potential consequences are nausea, vomiting, abdominal pain, and confusion. During the initial phase of low-carb dieting some fatigue and constipation may be encountered. Generally, these symptoms dissipate quickly. Ketosis may also give the breath a fruity odor, somewhat like nail-polish remover (acetone).

Low-carb diets do not enable the consumption of more calories than other kinds of diets, as has been often reported. A calorie is a calorie and it doesn’t matter weather they come from carbohydrates or fat. Study discrepancies are likely the result of uncontrolled circumstances; i.e. diet participants that cheat on calorie consumption, calories burned during exercise, or any number of other factors. The drop-out rate for strict (i.e. less than 40 grams of CHO/day) low-carb diets is relatively high.

What Should You Do? – There are 3 important points I would like to re-emphasize:

- The long-range success rate for low-carb and other types of diets is similar.

- Despite their popularity, little information exists on the long-term efficacy and safety of low-carbohydrate diets.

- Strict low-carb diets are usually not sustainable as a normal way of eating. Boredom usually overcomes willpower.

It is obvious after reviewing the topic, that more, well-designed and controlled studies are needed. There just isn’t a lot of good information available, especially concerning long-range effects. Strict low-carb diets produce ketosis which is an abnormal and potentially stressful metabolic state. Under some circumstances this might cause health related complications.

The diet you choose should be a blueprint for a lifetime of better eating, not just a quick weight loss plan to reach your weight goal. If you can’t see yourself eating the prescribed foods longer than a few days or a week, then chances are it’s not the right diet. To this end, following a moderately low fat diet with a healthy balance of fat, protein, carbohydrate and other nutrients is beneficial.

If you do decide to follow a low-carb plan, remember that certain dietary fats are associated with reduction of disease. Foods high in unsaturated fats that are free of trans-fatty acids such as olive oil, fish, flaxseeds, and nuts are preferred to fats from animal origins.

Even promoters of the Atkins diet now say people on their plan should limit the amount of red meat and saturated fat they eat. Atkins representatives are telling health professionals that only 20 percent of a dieter’s calories should come from saturated fat (i.e. meat, cheese, butter). This change comes as Atkins faces competition from other popular low-carb diets that call for less saturated fat, such as the South Beach diet plan. Low-carb dieting should not be considered as a license to gorge on red meat!

Another alternative to “strict” low-carb dieting would be to give up some of the bad carbohydrate foods but not “throw out the baby with the bath water”. In other words, foods high in processed sugar, snacks, and white bread would be avoided, but foods high in complex carbohydrates such as fruit, potatoes and whole grains, retained.

About the author:

Jay is the web owner of http://www.weight-loss.biz Weight Loss, a website that provides information and resources on nutrition, weight loss, and fitness. You can also visit his website at: http://www.diet-pill.info for Diet Pill Information

Written By: Jay Bauder

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Posted in Low Carb

Tags: Atkins Diet caloric restriction constipation diabetes folic acid ketosis low carb diets low fat diet low-carb diet nausea obesity olive oil South Beach South Beach Diet vomiting

The TRUTH About Low Carb Diets!

November 15th, 2007

With all of the conflicting studies and fuzzy interpretation of information, it’s no wonder that confusion reigns when it comes to the value and safety of low-carb diets. It seems like heated debates are raging everywhere! Whether it’s Atkins, the South Beach or some other low-carb plan, as many as 30 million Americans are following a low-carb diet.