Look Photography/Beateworks/Corbis

Frankly, I think that statement is flummadiddle. I'm not denying that some healthy foods—many varieties of fish, for example—are expensive. But my contention is that many of the foods that are the healthiest for us also happen to cost the least, particularly on a per-pound basis.

In fact, when I go grocery shopping, I try to mostly fill my cart with nutritious, delicious foods costing—so my mantra goes—"Under a Dollar a Pound, Year-Round."

Take a look at the U.S. Department of Agriculture's food pyramid. At the base are the things we should be eating more: whole grains, legumes (beans), fresh fruits, and vegetables. Higher up on the pyramid is what we should eat in moderation: poultry, eggs, milk, pasta, and rice. At the very top of the pyramid are things we should eat sparingly—red meat, fatty dairy products, sweets, and processed foods.