Have Ehlers Danlos and another thing, with quite a few effects I get ongoing, it's actually why I try experimenting with drugs in general. I wasn't much overweight but gave it a shot since it seemed like a fascinating drug, and the results were shocking to me.
Perennial light sleeper, couldn't drink caffeine either due to extreme long half life and sleep issues. On it, fall asleep at night like a "normal" person for the first time. Able to drink coffee too. I chalked that up to the fact it does have a bit of a drowsiness effect, but... then I noticed I was just having a bit less back pain. Noticed my tingling in feet and muscle fasciculation was down.
I've been on and off it now ever since, but I take lower doses/breaks since I don't need it for weight. But I was getting "attacks" of inflammation every ~6 months, since doing it for 1.5 years not a single attack (knock on wood).
My thought there is - yes fasting is great for a lot of things and maybe helped, but I can't help but think it's other effect. I've tried a lot of things, even other peptides that supposedly work and had 0 effects across hundreds of supplements. This stuff had huge effects.
The friend I can't speak to much, simply that they told me they started it and without my prompting told me a couple months later about the allergy thing.