A high fat diet based around animal protein sounds like a disaster IMO given you've already suffered one heart attack. Your arteries are damaged already.

You may like to check out this book Proteinaholic by Dr Garth Davis. There's heaps of interviews on youtube if you google him too.

This site by Dr Greger also has a lot of good health info. You can pretty much google any health condition and he's probably made at least one video about it.