Smiling Onion

http://www.healthextremist.com/red-onions-vs-white-onions-which-ones-healthier/

There are quite a few commonalities between both red and white onions. Both types of onions are considered low on the glycemic index, with a rating of 10. They both also provide about 10 percent of the daily value for vitamin C and the same amount of calcium per serving.

Although white onions contain .5 more grams of fiber and a higher amount of sulfur, red onions have been found to contain a higher amount of many other beneficial nutrients…

In general, the rule is that onions with a sharply strong taste, such as red onions, contain a higher amount of antioxidants. Red onions also win in the category of cancer prevention and blood thinning properties. Additionally, red onions contain less sugar compared to white onions, which is where they get their sweet taste from…