Good morning Thumperguy, I know you’re a scholar of nutrition and exercise which are fundamental keys to a long and productive life. My husband and I are the same way and have strived daily to stay as healthy as possible.

However, sometimes life throws a curveball even though we’ve done everything to avoid a catastrophic illness. For someone who is undergoing treatment for cancer, the lack of appetite brought on by nausea and gut issues can really get in the way of receiving calories and especially protein. I’ve been there and can tell you it was almost impossible some days to get any calories in at all.
So the addition of protein powders and other protein sources suggested by @soul become important to the recovery of someone on a restricted diet, whether it’s from cancer or other medical conditions which don’t allow for proper nutrition or calorie intake.

What protein sources would you recommend?