Blood sugar issues and master cleanse fasting?

Hi,
Isn't it dangerous for someone with blood Sugar issues to fast or do the master cleanse? Isn't The Master Cleanse a fast? I think I remember reading that it can be modified but not sure. I know how I feel when I don't eat within a few hours. I am okay on the day of my Liver Flush because I am drinking apple juice during that day to keep my Sugar up(hypoglycemic) but what about someone with any kind of diabetes, insulin resistance, etc? My mom has type 2 diabetes and I want her to clenase but I dont think it would be good for her to fast.
Thanks,
Robbie