Low-carbohydrate diet: Encyclopedia II - Low-carbohydrate diet - Arguments for low-carbohydrate diets

Low-carbohydrate diet - Arguments for low-carbohydrate diets

Low-carbohydrate diet - The evolutionary argument

Some advocates of low carb diets argue that the Paleolithic diet did not include grains, starches, and refined sugar, and that the human body has not evolved significantly since the time of the Neolithic Revolution, implying that their consumption should still be avoided today and causes undesired and largely unknown effects. Specifically, it is argued that they cause the body to produce excess amounts of the hormone insulin, which tells the body to store rather than burn fat, hence causing obesity and its complications (heart disease, cancer, diabetes). They claim that humans evolved to eat a diet which consisted mainly of meat and that the current "epidemic" of obesity is due to the popular assumption, reinforced by the food industry and the new field of dietary medicine, that the low-fat approach is healthier.

Supporters claim the exclusive focus on reducing fat is oversimplified, and that low-fat diets are not automatically healthy ones. They claim that the western world is not suffering from a collective failure of will to exercise, but has been encouraged to eat more carbohydrates, which in turn stimulate appetite and more eating.

The recent rise in western obesity rates has coincided with a widespread belief in low-fat, high-carbohydrate as a healthy way of eating. By contrast traditional, high-fat French cooking has led to a much lower incidence of obesity, morbid obesity and chronic heart disease than the high-sugar American diet, despite overall energy intake and exercise levels being the same.

Low-carbohydrate diet - Favorable studies

Advocates point to scientific trials demonstrating the efficacy and safety of low carb diets. Several independent clinical trials have shown that low carb diets can be successfully used to lose weight. These trials found that, in the short term, risk factors for heart disease and diabetes — such as blood serum cholesterol and insulin levels — tended to improve in spite of increased consumption of saturated fat and cholesterol. The trials were of short duration, and were not able to assess the long-term health effects of the diet.

A study conducted in 1965 at the Oakland (California) Naval Hospital used a diet of 1000 calories per day, high in fat and limiting carbohydrates to 10 grams (40 calories) daily. Over a ten-day period, subjects on this diet lost more body fat than did a group who fasted completely. (Benoit et. al. 1965). Some advocates of low-carbohydrate diets have termed this the metabolic advantage of such diets.

Major research can be found at http://www.nutritionj.com/content/3/1/9

Adapted from the Wikipedia article "Arguments for low-carbohydrate diets", under the G.N U Free Docmentation License. Please also see http://en.wikipedia.org/wiki