What do sugar cravings constantly mean? 70 lb wgt loss in 16 mos. I avoid carbs & fats. High protein vege fruit diet now. Advice?

See Dr. A 70 pound weight loss is troublesome, especially if you are not trying to lose weight? Sugar craving and weight loss, may indicate diabetes as one example, but either way, you need an exam and testing by a dr. A soon as possible. Best wishes.