Why It's Hard to Lose Weight — and Why Most Diets Fail – Yahoo Food

Yahoo FoodWhy It's Hard to Lose Weight — and Why Most Diets FailYahoo FoodDiets come, and diets go — but one saying seems to persist: Weight loss depends on calories in versus calories out. According to Dr. Laura Lefkowitz—who transitioned to nutritional science after she split her pants while doing a routine check-up on a …