Related: The Essential Cancer Treatment Nutrition Guide and Cookbook, Jean LaMantia

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Many Americans made a New Years Resolution to be healthier in 2013. Now 4 weeks in, it's time to set some new daily and weekly goals to keep on track. No matter the motivation for setting this healthy goal one potential outcome of a healthy diet includes a lower risk of cancer.

Jean LaMantia, registered dietitian and cancer survivor recommends repairng cell damage via a healthy diet. Cell damage happens all the time in the body. It may occur because of exposure to cigarette smoke, smog, UV and other types of radiation. One group of beneficial nutrients in the diet that can help to repair this damage is called anti-oxidants.

Antioxidants prevent and repair damage to the body's cells. There are several dietary sources of antioxidants. While many foods may claim the title of antioxidant, those that have been shown to exhibit anti-oxidant activity include beta-carotene, lutein, lycopene, selenium and vitamins A, C and E. This summary excerpt adapted from the National Cancer Institute provides a healthy anti-oxidant shopping list;

Beta-carotene is the precursor to vitamin A, it is found in many foods that are orange in color, including sweet potatoes, carrots, cantaloupe, squash, apricots, pumpkin and mangos.

Lutein, best known for its association with healthy eyes, is abundant in green leafy vegetables such as collard greens, spinach and kale.

Lycopene is a potent antioxidant found in tomatoes, watermelon, guava, papaya, apricots, pink grapefruit, blood oranges and other foods. Up to 85% of American dietary intake of lycopene comes from tomatoes and tomato products.

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