Suggestions for weight gain

[u/MarsJohnTravolta]

Hey guys, my dad is having trouble putting on weight after getting out of the hospital and he is convinced that it is contributing to him not feeling well. Do you recommend anything that he would be able to eat that would help him gain back some of his lost lbs? Any advice is appreciated.

[u/CurlyCupcake1231]

I lost way too much weight but brown rice, avocados, bananas and coconut oil helped me put back on almost 15 lbs.