by Joan Raymond

Protein-packed soy is linked to the prevention of cancer and osteoporosis.

A typical Japanese eats soy for breakfast. And lunch. And dinner. “We eat tofu every day,” says Mamie Nishide, a cooking instructor and recipe developer who’s a native of Nara, Japan. Soybeans, first grown in tropical Asia thousands of years ago, are used in everything in Japan from soy sauce (as ubiquitous as ketchup) to vegetable oil, tofu, and the fermented soybean paste called miso. Japanese eat more soybeans than anyone else, and the long-lived Okinawans top the list at about 60 to 120 grams per person each day, compared with practically zero grams for the average American.

Why to try it: Protein-packed soy is high in isoflavones, estrogen-like substances linked to the prevention of cancer and osteoporosis. But its biggest draw may be the dozens of studies showing soy is good for your heart; the FDA even allows certain soy products (with at least 6.25 grams of soy protein per serving) to have a heart-healthy claim on their labels. Plus, some studies have shown that a diet rich in soy can reduce breast-cancer risk.