"It's funny though Mike. I swear I haven't eaten a donut in months..."
Let me tell you about a friend of mine, Chuck. We've been friends since college and have maintained close contact over the years.
His cholesterol is through the freaking roof, and the doctors are trying to get it down with a cocktail of statin drugs. The doctors are sure he's got significant plaque build up, but he won't go for the stress test. He's not had overt signs of heart disease, but it's very likely that it's there.
But, here's the funny thing. He is a freaking workout fiend. He runs at least 3 miles a day, is a high-level black belt in Tae Kwon D'oh, or however it's spelled, and eats the healthiest diet I've ever seen. His body fat can be measured in single digits.
It's genetics at work.