>Eat exactly these seven plants in just the right ratios to get roughly the amino acids your body needs before crossing 2400 calories. No room for error.

I don't know what you're talking about. I'm 37 y-o, I've been vegetarian for 5+ years with a plant-based mediterranean diet (plus some cheese and eggs). Doctors say my health is great, and I've never been in better form. I bike a lot these days, and run a ultramarathon once a year.

I've read a few books about nutrition and find it pretty easy to meet my needs without supplements (except B12, one every two years but I'm not vegan so I could probably do without). I just had to reduce my caffeine intake to a more reasonable level, so I can absorb enough iron naturally.