After investigating 20 controlled feeding studies, Hall and Guo found that both low-carb and high-carb diets had similar effects on body fatness and energy expenditure. The results of this meta-analysis provide us with high-quality evidence that supports the fact that calories matter much more than the fat or carbohydrate content of the diet. With the goal of keeping carbs below 50 grams per day, Keto Advanced 1500 Price often consume no breads, grains or cereals. And, even fruits and vegetables are limited because they, too, contain carbs. For most people, the keto diet requires making big shifts in how they usually eat.