Raw onions are certainly pungent, and can even cause painful tears when they’re cut, but they are incredibly healthy to eat. Onion is so versatile that it is used as flavoring in thousands of dishes, features prominently in thousands more, and can even be a standalone snack.
#1 Better Cardiovascular Health.
Onions are highly nutritious, with a healthy dose of vitamin C, fiber, and folic acid, as well as calcium and iron. But what really makes onions special is the antioxidant quercetin, which works to slow the progress of oxidative damage to our cells and tissue. When it comes to heart health, the quercetin in onions helps to maintain a healthy blood pressure and keep the arteries elastic and soft.