Re: Longest time you can go safely while water fasting?

Where did you pluck that number from? The longest recorded medically supervised Water Fast is actually 382 days!! With the correct medical supervision and supplements a person can fast for the length o time it takes to deplete all their fat stores! A person who is clinically obese can Water Fast for a lot longer than 40 days with the correct supervision. It depends entirely on your fat stores and how much you have conserved fats for the body to burn for energy! Tweet