"American farmers produced 600 more calories per person per day in 2000 than they did in 1980. But some calories got cheaper than others: Since 1980, the price of sweeteners and added fats (most of them derived, respectively, from subsidized corn and subsidized soybeans), dropped 20 percent, while the price of fresh fruits and vegetables increased by 40 percent."

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Vegetarians always ask about getting enough protein. But I don't know any nutrition expert (who) can plan a diet of natural foods resulting in a protein deficiency, so long as you're not deficient in calories. You need only 5 or 6 percent of total calories in protein... and it is pratically impossible to get below 9 percent in ordinary diets.

— Nathan Pritikin