Although detox diets have had a positive impact on many who have completed them, they are not proven to have specific health benefits. The results of the detox vary depending on how the body reacts to it, and detox diets don't work each time they're tried.
Because each body is different, there is no guarantee that a detox diet works the same way for every single person. Each type of detox diet has a different effect. A detox that involves total fasting has a different effect on the body than a fast that allows for some foods, such as vegetables or fruits.