I do, however, worry about the damage I might be causing my body without realising. All my research seems to point to obesity being the main cause of diet-related health issues -- but I'm not obese. I fast for most of the day, so I don't imagine I'll develop insulin sensitivity anytime soon. I walk for over an hour a day, so I don't imagine I'm at a high risk for heart disease. I lift weights twice a week, so I don't have a disproportionate amount of fat on my frame. Is there something I might be doing to myself without realising? I really just eat this way out of convenience. I'd hate to think I was going to die 30 years early because of it.