The Incredible Edible Onion

Onions are, potentially, a good source of antioxidants. Though, interestingly, the antioxidants are concentrated in the outer layers immediately under the papery peel ... Here's some numbers: More than 10 times more antioxidants in the outer layer of white onions compared to the core.

Older white women who consumed onions at least once a day had overall bone density that was 5% greater than individuals who consumed onions no more than once a month. 5% might not sound like a lot, but that improvement in bone density could potentially translate into decreasing the risk of hip fracture by more than 20%...

Yellow onions, in general, have more antioxidants than white; and red onions beat them both.

The consumption of fresh yellow onion ameliorates the high blood sugars and insulin resistance in breast cancer patients during doxorubicin-based chemotherapy.