if I had for example some kind of autoimmune disease so let's take this disease rheumatoid arthritis that there's no evidence that fasting is gonna do anything for and dr. Longo says well you know you can reset your immune system if you do seven days of fasting what would I do I would absolutely need to it as opposed to taking a bunch of toxic drugs like prednisone like you've seen what prednisone does to people why wouldn't I do seven days of fasting the risk of that is zero