Scientists have linked onions with many health benefits. Most of the benefits come from antioxidants. Research shows that one particular antioxidant, called quercetin, protects health in several ways. One study shows that quercetin fights inflammation and boosts the immune system.

Scientists have linked onions with many health benefits. Most of the benefits come from antioxidants. Research shows that one particular antioxidant, called quercetin, protects health in several ways. One study shows that quercetin fights inflammation and boosts the immune system.