3. Boost Your Immune System
Your immune system is what keeps you healthy and helps prevent premature aging. There are many things that you can do to help keep your immune system in fighting shape, one of which is adding superfoods to your diet. Red onions are one such superfood that helps to bolster your immune system by fighting free radicals. Specifically, polyphenols in red onions have antioxidant properties that help reduce the negative effects of free radicals.
When you reduce or eliminate free radicals from your body, it helps to make your immune system stronger. Another way red onions boost your immune system is by reducing the production of histamines in the body. The agent in red onions that helps control the allergic response is quercetin. Histamines make you itch, sneeze and create tears when your body is having a negative reaction to something you have eaten, applied, or have otherwise been exposed to.