![]() ![]() In an analysis of 25 observational studies, a 50% increase in blood selenium levels was associated with a 24% reduction in the risk of heart disease ( 11). While supplementing with selenium may help improve quality of life in peopleĪ diet rich in selenium may help keep your heart healthy, as low selenium levels have been linked to an increased risk of heart disease. Summary Higher blood levels of selenium may protect against certain cancers, However, some research suggests that supplementing with selenium may reduce side effects in people undergoing radiation therapy.įor example, one study found that oral selenium supplements improved overall quality of life and reduced radiation-induced diarrhea in women with cervical and uterine cancer ( 10). It’s important to note that this effect was only associated with selenium obtained through foods, not supplements. This has been attributed to selenium’s ability to reduce DNA damage and oxidative stress, boost your immune system, and destroy cancer cells ( 8).Ī review of 69 studies that included over 350,000 people found that having a high blood level of selenium was associated with a lower risk of certain types of cancer, including breast, lung, colon, and prostate cancers ( 9). In addition to decreasing oxidative stress, selenium may help lower the risk of certain cancers. Helps defend your body from chronic conditions, such as heart disease andĢ. Summary Selenium is a powerful antioxidant that fights oxidative stress and They work by neutralizing excess free radicals and protecting cells from damage caused by oxidative stress. Oxidative stress has been linked to chronic conditions like heart disease, Alzheimer’s, and cancer, as well as premature aging and the risk of stroke ( 2, 3, 4, 5, 6).Īntioxidants like selenium help reduce oxidative stress by keeping free radical numbers in check ( 7). This leads to oxidative stress, which damages healthy cells ( 1). However, things like smoking, alcohol use, and stress can cause an excess of free radicals. They perform important functions, including protecting your body from disease. ![]() They often get a bad rap, but free radicals are essential for your health. Antioxidants are compounds in foods that prevent cell damage caused by free radicals.įree radicals are normal byproducts of processes like metabolism that are formed in your body daily. ![]()
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