Juice diets can significantly reduce your calorie intake. This results in a large caloric deficit for many people, so juice diets often lead to weight loss, at least in the short term (. However, once your calorie intake returns to normal after the juice diet, you're likely to regain some, if not all, of your weight. The juice itself will not promote weight loss, but it will promote calorie control.
Vegetable juice, in particular, can be quite low in calories and, if done correctly, a juice diet is a way to reduce a significant amount of calories from the diet. Juicing may seem like an easy way to lose weight, but it can be counterproductive. If you're on a diet that only contains juices, you may not get enough fiber or protein to feel full.