Got a fridge stocked with gfruit? How about a lock on the bread box? Instead of depriving yourself, researchers say it's better to look at cultures and regions around the world where diets are not just healthy, but also have highly protective qualities against scourges like cancer, depression, diabetes and heart disease. From Mexico's remote Copper Canyon to Okinawa, Japan, there are time-tested diets that promise to protect us from this range of diseases. The key is knowing why they work and how the average American can practice them at home -- guilt-free. Looking for Answers Elsewhere Researchers have long tried to understand why some regions are much healthier than others. Epidemiological studies have looked at disease rates in conjunction with environmental and eating patterns in order to understand which factors are the most influential. This started in earnest in the 1980s, when researchers began studying the Mediterranean