You can just have him give you all his meat and bacon since "meat causes heart attacks". More meat for you
But seriously, if he cares and respects you enough he will at least hear you out and do some basic reading. You have already lost a ton of weight and feel great which is proof enough that you are on the right track. He should be congratulating you instead of trying to convince you that you will drop dead.
"If man made it, don't eat it" - Jack Lallane
People say I am on a "crazy" diet. What is so crazy about eating veggies, fruits, seafood and organ meats? Just because I don't eat whole wheat and processed food doesn't make my diet "crazy". Maybe everyone else with a SAD are the "crazy" ones for putting that junk in their system.