Protetox Reviews - This article explores if you can lose weight overnight and how you may use your sleep pattern to promote healthy and sustainable weight loss. If you have a health condition, it is a good idea to talk with your provider before starting this or any diet plan to lose weight. A VLCD is only recommended for adults who are obese and need to lose weight for health reasons. These diets are often used before weight-loss surgery. You should only use a VLCD with the help of your provider.