[Tor3]

Vegetables are nutrient-dense - no question there. And I was on a mostly vegetarian diet when I did competition bicycling in my youth, simply because I just couldn't get enough nutrients any other way. The problem with a pure vegetarian diet is only that it doesn't cover all your needs, or not completely at least. The trace elements again. If you eat enough of it, no problem in general. If you eat like a bird you may have a problem. And may need some kind of supplements.