You probably know that omega-3 fatty acids can bolster heart and brain health, but they can also decrease your risk of eye disease. According to a study published in the 2011 Archives of Ophthalmology, women who ate canned tuna and dark-fish meat (mackerel, salmon, sardines, bluefish, swordfish) just once a week had a 42 percent lower risk for AMD than those who ate such fish less than once a month. “Fish oils and fish-oil supplements are loaded with antioxidants that help prevent the damage from free radicals that can cause diseases like AMD,” says Tanya Zuckerbrot, a registered dietitian in New York City. Another reason to go fish: Increasing your intake of omega-3s may also support healthier tear film. (Eat at least five to six four-ounce servings of fatty fish weekly.)