The Science of Fasting

The only time I tried a multi day fast, I started getting jaundice. My eyes started turning yellow around the 60 hour mark, I kept it up until the 72 hour mark and then called it quits . I have Gilbert's syndrome which isn't anything serious but I have a naturally high bilirubin count, and my body does not process it that well. After my eyes started turning yellow I read up and found that it could happen and that it's best to discontinue the fast.... eyes cleared up in a day. So no super long fasts for me.