I’m a cancer survivor (lymphoma), and one of the things I learned during treatment was that wasting disease is one of the big things that actually kills patients.

My calf atrophied substantially toward the end of treatment — enough that I was a bit worried. Almost three years later and it’s still noticeably smaller than the other. I ate a ton, and gained quite a bit of weight overall (100mg of prednisone * 5 * 6 lmao).

I never tried extended fasting before treatment. There really wasn’t time, but there’s at least one documented case out there of someone curing their lymphoma with fasting.

I’m also not a doctor, but I don’t think fasting on chemo is the play. They know about those drugs and what they do. When it’s treatment time, they calculate the drug amounts on your body surface area (you weigh in when you get there) and mix them on the spot. I’d trust what they say about those drugs, while on those drugs!