Originally posted by pete69
Technically no, there is no requirement for carbs and any glucose requirements can be met through gluconeogensis from fats and proteins. For optimal results in body composition and training, carbs are necessary to some degree.
Understand that carbs themselves aren't the main cause of fat gain. Denovo lipogenesis, the conversion of carbs to fat, rarely happens in humans even w/ carb overfeeding, if the conditions are right. The problem arises w/ no activity, high calories, high carbs and high fat diets that fat really gets stored. Or if you really, really overeat carbs for days on end. But carbs do inhibit lipolysis (stops fat burning), so other excess calories, especially fat, can be stored more easily as fat, but only on hypercaloric diets, eating more than you burn.