exercicios aerobicosAs I mentioned earlier one of the benefits claimed by the promoters of low-carb diets is that unbalancing your diet will increase your metabolism, this simply is not true. Other than short term bursts from drugs, the only way to raise your metabolism is through exercise.

The American Heart Association has plenty to say on low-carb diets, including the Atkins, the Zone, Sugar Buster, and the Stillman diet. Robert H. Eckel, M.D., chairman of the American Heart Association's Nutrition Committee had this to say, "They put people at risk for heart disease and we're really concerned about this". "These diets will raise the... bad cholesterol and increase the risk for cardiovascular disease, particularly heart attacks."

Judith Stern, professor of nutrition and internal medicine at the University of California, Davis said this on the subject, "You want my response to Atkins saying that his diet can lower your cholesterol and do all sorts of good things for your heart, you know what my response is? Bull!"

Yes, LDL cholesterol (the bad kind) does usually drop as people lose weight from low-carb diets, however, that is due to the weight loss itself, NOT the manner in which it was lost. Plus, it has been shown that if people continue on this diet as a weight sustainer after the weight is lost, "Many people's LDL goes up if they remain on the diet..." said Eckel.

Plus, the nutrition committee of the American Heart Association issued a science advisory warning about high-protein diets, they stated:
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o Such diets may produce short-term weight loss due to dehydration.

o Weight loss may also occur through caloric restriction resulting from the fact that the diets can be relatively unpalatable.

o These diets often restrict healthful foods that provide essential nutrients.

o Individuals who follow these diets are at potential risk of cardiac, renal, bone and liver abnormalities overall.

o Any improvement in blood cholesterol levels and insulin management would be due to weight loss, not the change in your food.

o A very high protein diet is especially risky for patients with diabetes because it can speed the progression of diabetic kidney disease.

More and more food labels are screaming "FAT FREE!" but America's weight is increasing. What's going on?

Eating "fat free" has been one of the most popular trends in recent years, but dieters are finding that adding fat to their diets, provided it is the right kind of fat, is helping them lose more weight than avoiding fat.