It might be tempting to load up on dietary supplements instead of changing the diet, but according to Dr. Shapira, supplements are simply not as effective. Foods provide nutrient "synergy," she says. "In foods, many vitamins and various antioxidants and bioactive ingredients work to support one another and the body's natural protective mechanisms. Synergies between the nutrients in your food, which make a significant contribution to health, may contrast with the relative isolation of a vitamin supplement."

The research is getting attention: for the first time, the Israeli Cancer Association has included the nutritional information as part of their "Smart in the Sun" advisories.

It's not necessary to move to Greece, Israel or Turkey to get the benefit of the diet. Most of the appropriate foods are stocked in American grocery stores. Olive oil, fresh fish, fruits and vegetables, red wine in moderation, whole grains, beans and lots of water should be at the top of the shopping list, Dr. Shapira advises.

And there are some foods to avoid, she points out. Go light on red meat, processed foods, and alcohol (red wine is preferable), and be wary of foods that contain the photosensitizing compound psoralen, such as parsley, celery, dill, cilantro and figs.

Source: American Friends of Tel Aviv University