I've had it. This pseudo-medical nutritional advice is just a bunch of wishful thinking. Other than the obvious necessity of getting enough food with sufficient variety to insure adequate nutrient intake, modifying your diet really isn't going to affect your health that much.

Here I'll get anecdotal. My grandmother and great-grandmother lived to age 100 and 97. Believe me, fresh fruits and vegetables were never the order of the day. Nor were vitamins. Nor was exercise. The vast part of their health was genetic and reasonable care in lifestyle. My mother's on the way to 90 and eats crap.

My kids don't know what a vegetable looks like and they're perfectly healthy.

Now to get non-anecdotal - show me all the college freshman who are suffering from lack of nutrition because they didn't eat enough vegetables. There aren't any.