  
» Added: Mar 27, 2007
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Low carb (carbohydrate), high protein diets are the latest dieting craze.
However, before you jump on the band wagon, you may want to consider a few things:
Low carb (ketogenic) diets deplete the healthy glycogen (the storage form of glucose) stores in your muscles and liver.
When you deplete glycogen stores, you also dehydrate, often causing the scale to drop significantly in the first week or two of the diet.
This is usually interpreted as fat loss when it’s actually mostly from dehydration and muscle loss.
By the way, this is one of the reasons that low carb diets are so popular at the moment - there is a quick initial, but deceptive drop in scale weight.
Glycogenesis (formation of glycogen) occurs in the liver and muscles when adequate quantities of carbohydrates are consumed - very little of this happens on a low carb diet.
Glycogenolysis (breakdown of glycogen) occurs when glycogen is broken down to form glucose for use as fuel.
Depletion of muscle glycogen causes you to fatigue easily, and makes exercise and movement uncomfortable.
Research indicates that muscle fatigue increases in almost direct proportion to the rate of depletion of muscle glycogen.
Bottom line is that you don't feel energetic and you exercise and move less (often without realizing it) which is not good for caloric expenditure and basal metabolic rate (metabolism).
Much of the weight loss on a low carb, high protein diet, especially in the first few weeks, is actually because of dehydration and muscle loss.
Eating too much fat is just not healthy.
I know you've heard of people whose blood levels of cholesterol and triglycerides have decreased while on a low carb, high protein diet.
This often happens with weight loss, but it doesn't continue when you're on a diet high in fat.
There are literally reams of research over decades that clearly indicates that an increase in consumption of animal products and/or saturated fat leads to increased incidence of heart disease, strokes, gall stones, kidney stones, arthritic symptoms, certain cancers, etc.
For example, in comparing countries with varying levels of meat consumption, there is a direct relationship between the volume of meat consumption in a country and the incidence of digestive cancers (stomach, intestines, rectal, etc.).
Fat is certainly necessary, and desirable in your diet, but they should be mostly healthy fats and in moderation.
Manufactured / synthetic "low fat" foods with lots of added sugar are not the answer.
Neither are manufactured / synthetic "low carb" foods with artificial sweeteners or added fat.
By the way, use of artificial sweeteners has never been shown to aid in weight loss and they may pose health problems.
According to Dr. Keith-Thomas Ayoob of Albert Einstein College of Medicine in New York, "In my experience, unless you're willing to throw out decades of research, you cannot ignore that diets chronically high in saturated fats are linked to heart disease
Dr. Ayoob is also a spokesman for the American Dietetic Association and says that low carb, high protein diets are an attempt at a quick fix and not a long-term lifestyle change.
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