Wakame is also an excellent source of iodine, an essential mineral. When it comes to iodine and disease prevention, studies have shown that either too much or too little can have an effect when it comes to reducing your risk of thyroid cancer . So in this case your goal should be to obtain adequate iodine from your diet. Wakame on average contains around 42 mcg of iodine per serving, which is about 28% of your daily intake .
6. Lycopene-Rich Foods
There is a growing body of research to suggest that consuming foods rich in lycopene can lower your risk for certain types of cancer, particularly prostate cancer . Lycopene is a type of antioxidant in the carotenoid family that gives tomatoes, watermelons, and grapefruits their red and pink colors. As a whole, carotenoids have been associated with a lower risk of lung and colorectal cancer . Tomatoes, guava, watermelon, papaya, grapefruit, and cooked red peppers are all good sources of lycopene.
Note: Lycopene is actually more concentrated in processed tomato products like sauces and pastes, and is not degraded by cooking.
7. Beta Carotene-Rich Foods
Dietary carotenoids* have been linked to a lower risk of developing lung cancer, however, more research needs to be done to determine the effect of consuming beta-carotene through food on cancer prevention . Carrots, sweet potatoes, and dark leafy greens like kale and spinach are excellent sources of beta-carotene.
Note: Supplemental beta-carotene has not shown the same effect. In fact, it may increase cancer risk . It’s always best to get your beta-carotene from foods.
8. Fatty Fish
There is some research to suggest that including a few servings of fatty fish, such as albacore tuna, salmon, Atlantic herring, mussels, anchovies, and sardines, every week can reduce your risk for developing certain cancers. This is likely because of their high vitamin D and omega-3 fatty acid content, both of which are believed to reduce the risk of disease, including cancer [19,20].
Honorable Mentions
This is by no means a definitive list of the best foods to prevent cancer, and there are many other anti-cancer foods that also contain important nutrients that reduce your risk of disease. Other cancer-fighting foods include berries and citrus fruits, lentils, legumes and eggs, whole grains like brown rice and oatmeal, olive oil, and green or white tea [2].