Radiation therapy is a common treatment used for a variety of cancers, and can lead to disease remission. Some individuals take supplements during radiation to keep the immune system strong and promote health and wellness, and selenium may be one of these supplements. The Office of Dietary Supplements states that taking a higher than normal dose of selenium has been associated with a reduced occurrence of a variety of cancers. Before using selenium, especially during radiation therapy, talk with your oncologist about whether or not it is safe for you.
Step 1
Talk with your oncologist and your treatment team about selenium and whether it is safe and appropriate for you to take these supplements during radiation therapy. This mineral is an antioxidant, and antioxidants can interfere with radiation and chemotherapy, says the American Cancer Society.
Step 2
Take between 55 mcg and 200 mcg daily of a selenium supplement. The University of Maryland explains that 55 mcg daily is the recommended amount for adults, but some individuals may take up to 200 mcg, with a doctor's permission. Long-term use of high doses can increase your risk of developing diabetes.
Step 3
Reduce your dosage and tell your doctor if you start to have symptoms of selenosis, or too much selenium. The National Institutes of Health Office of Dietary Supplements lists symptoms that include hair loss, fatigue, stomach upset, mild nerve damage, irritability and blotchy nails.
Tips and Warnings
- Eating foods rich in selenium can also help your body get the necessary amounts of this mineral. Dietary sources of selenium include Brazil nuts, tuna, beef, cod, macaroni, eggs, oatmeal and rice.
- Do not take more than 400 mcg of selenium; the University of Maryland Medical Center states that this is the tolerable upper limit, and taking more than this can cause adverse effects. Tell your doctor about any other medications or supplements you are taking, to avoid any interactions with the selenium.
