The only type of onion we like is red onions. Aside from the mild, sweet taste, there are many health benefits to eating red onions.
The more red onion you eat, the more you lower your blood-sugar glucose levels! This is due to allyl propyl disulfide and chromium, which are both found in red onion.
Quercitin, one of the flavinoids found in onions, is known to be beneficial to gastrointestinal health. So it can help lower your chances of colon cancer and related diseases.
According to a study in the Journal of Agricultural and Food Chemistry, red onions are also beneficial to overall bone health. A compound known as GPCS, found in red onions, inhibits cells that break down bones.
Red onions reduce inflammation in the bones and throat, as well as in the blood vessels. This reduces many of the symptoms of osteoporosis, asthma and even the common cold!
Chromium and vitamin B6 are also found in onions. They help to lower blood pressure and cholesterol.
Getting back to the allyl propyl disulfidethe, that's the stuff (found in onions in general) that makes you cry! But don't be sad, you're just crying reflex tears! Reflex tears attempt to wash out irritants that your eyes have come into contact with (i.e., onion vapors, dust, chemicals, etc.).
Some say that freezing the onion for 10 minutes before you slice it will prevent you from crying. I've also heard that cutting an onion under cold running water helps. I got curious and tried these methods today. They both work, but the freezing method works better than the running water method.
So for your next meal, consider adding red onion. Raw or cooked, it's the perfect healthy addition to any sauce, sandwich or stew! I've even microwaved a whole onion and ate it! (Peel, cut off both ends, then nuke for 1-2 minutes. Mmmm, sweet!)
*source: World's Healthiest Foods