Hey my father is 38 years old 227 at 5'8 and is severely over weight. He doesn’t really care for his health but I would hate to see his life cut short due to a heart attack or some sort of cardiovascular failure. I tried to explain to him what harm he’s doing to him self and even got him a gym membership to attend with me, yet he said it would be a waste of time. My question is this, what’s would be a proper diet for him to lose weight may it be muscle and fat. He can’t really do Atkins or keto because he has high cholesterol. Any input would be greatly appreciated.