I Have A Son-in-law Who Has A Heart Problem And

I have a son-in-law who has a heart problem and was recently diagnosed with amyloidosis @ Brigham and Women's Hospital . He resides in Princeton, N. Jersey and has been following a strict regimen for a diet however he is very discouraged and has no energy, et. and I was wondering if there are any support groups or material that might help is seeming depression.