10 Amazing Health Benefits of Onion

Prevent Inflammation And Other Allergies

We have already seen quercetin (and other flavonoids) in onions can help prevent inflammation. Onions also treat allergies by preventing the cells from releasing histamine.Cooking with onions can help open and drain your sinuses. And the antihistamine properties of quercetin can also aid in reducing nasal congestion. Even eating a raw onion at night can help relieve congestion – the sulfur-compounds in the onion can break down the mucous.