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