Purple onions, also known as red onions ... Purple foods offer many health benefits. The anthocyanins that give these foods their purple color are a type of flavonoid, a beneficial plant compound.

While some individuals experience digestive sensitivity to raw onions, cooking often enhances both digestibility and certain health benefits. The heat-activated compounds in cooked onions ...

Red onions get their reddish-purple color from anthocyanins ... they are antioxidants that have also been tied to potential health benefits such as reducing the risk of heart disease and cancer ...