Just a word to the wise......
Make his ass goto the doctor. Get your mom to be like a tick on his ass until he goes.....
My wifes father died of a massive heart attack at 54 years old. His health issues could have been prevented if he had gone to the doctor. He was a very private guy..... and he would rather have not known that something was wrong with him. He paid the ultimate price and now my wife, her brother, and her mother all live with the fact that they didn't make him go. Was it their responsibility? Nope..... but these are feelings you live with forever anyways.
If he still doesn't go then there's really nothing you can do.....
*I don't mean to be a downer here lol! Just throwing it out there*
~Haz~