Food deserts are usually thought to be areas in the U.S in which it's difficult to buy fresh produce, fruits and vegetables, and other healthy food items. Large swathes of urban communities whose economic base is marginal, and many rural areas, experience this problem. You're lucky in those areas if you have access — often miles from where you live — to a big superstore like Wal-Mart, which may or may not have a smattering of fresh produce for you to buy. Or you're lucky if you have access to a fried chicken or hamburger chain, an unhealthy fast-food option.
