How does one start to see a healthy diet as a “quality of life”? QoL is when you eat a chunk of anything you feel like, down it with soda and feel nothing bad next hour or day. I could do that, lie on a couch watching mtv or go fall from a tree when I was young. That was quality of life. Everything after 30 is just a life support. You improve life support by a diet or a (careful) walk.