Q+A: What are the three most important supplements in your medicine cabinet?

Fish oil. I take up to 1,000 mg daily for healthy skin and to keep inflammation in my body in check, which helps prevent degenerative diseases and cancers. I recommend these brands: Enzymatic Therapy, Nordic Naturals, Carlson Labs, and Metagenics.
Vitamin D3. I take 2,000 mg daily. Vitamin D is like the vitamin C of the ’90s. It helps everything—your bones, your emotional well-being, your mind; it even helps prevent cancer. Try Solgar or New Chapter.
Mushroom extract. Look for a formula that combines the immune-boosting and anticancer properties of reishi mushrooms, the blood-sugar balancing and cancer-fighting properties of the maitake mushrooms, and the cholesterol-lowering abilities of the shiitakes—talk about a trifecta. I like Fungi Perfecti.

[ The doctor is in ] Melinda Ring, MD, medical director at the Center for Integrative Medicine and Wellness at Northwestern Memorial Hospital in Chicago