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Organic Food

While many experts say that organic foods are nutritionally the same as their conventionally grown counterparts, a few studies have shown that they may actually have more vitamins and minerals, after all. And a 2011 study from Newcastle University in the U.K. suggested that because of these added nutrients, switching to organic food can extend the average lifespan—by about 25 days for men and 17 days for women. Foods grown without pesticides have higher levels of vitamin C and other immunity-boosting antioxidants.

Next: All but the last bite