Well said tadawdy ! Most people don't realize that different lifestyles, ages and gender determine ideal nutrition. The winner in his age class 16-20 I think, in The Race Across America had his father as a support team in a van and aside from what little his father had carried, the boy lived on liqorish and stopping for cheeseburgers, a diet that's not "healthfull", it just goes to show; he's young and excercising extraordinarilly. I'm not suggesting that you or anyone needs meat, things aren't so simple.
A woman needs more Colesterol while pregnant that is rec. by nutrition specialists for "average" people, more than max. actually, WAY more.

We all need essential Amino acids, some is found in most things, enough is found in very few, other than meat. Beans and other foods are considered near "perfect foods" in that regard. www.vegsoc.org/info/protein.html they've
a table at the bottom of the page. Beans are great. Buy 'em dry and cook
them MORE than the directions say. For EX.. if it says to boil for an hour OR soak them overnight.. do BOTH.. AND simmer for more than you'd think on low. Avoid draining, allow them to steam somewhat drier, adding just a tiny bit of water here and there IF required. I eat little meat, eat as these sites suggest and have lost 140lbs. Steamed dried beams rule !