@granitedoug
I don't know if this is helpful and please check with your doctor. I've always been low-normal to underweight on the bmi scale so when I was diagnosed my doctor was concerned about my weight. I used to eat a really healthy diet, very little sugar and I watched my cholesterol. The dietitian told me to give up skim milk and low fat yogurt and switch to whole milk, full fat yogurt and cheese as a starting point. My oncologist told me that at this stage some sugar might be good for me. Just switching the fat content in my yogurt and keffir, and adding some cheese and occasional ice cream, has made me gain a lot of weight. I dont eat red meat but increased my chicken, fish and nuts and added homemade protein shakes to get more protein. I started this journey at 59 kg. 9 months later I weigh 65, even though I had one bout of diarrhea so bad i didn't eat for 5 days and lost 6 kg. So net gain of 12 kg.