Thanks to outdated science and a frustrating insistence by health groups and the food industry to not adapt, it's still a commonly held conviction that fat is evil. Increasingly, however, a growing number of top nutritional scientists blame excessive carbohydrates—not fat—for our dietary ills. They say cutting carbohydrates is the key to reversing obesity, heart disease, Type 2 diabetes and hypertension.
"Fat is not the problem," says Dr. Walter Willett, chairman of the department of nutrition at the Harvard School of Public Health. "If Americans could eliminate sugary beverages, potatoes, white bread, pasta, white rice and sugary snacks, we would wipe out almost all the problems we have with weight and diabetes and other metabolic diseases."
Read more from the LA Times article, A reversal on carbs.