Onions are low in calories and have high water content. They have some fiber as well, but not a great source compared to other vegetables. Onions also contain Vitamin C, Vitamin B9, Vitamin B6 and Potassium which all contribute to health in different ways.

Onion is known as one of the main functional foods - foods that prevent disease. She is a prebiotic rich in fibers, has vitamins and minerals like vitamins from complex B, vitamin C, calcium, phosphorus, potassium, iron, sodium, magnesium and selenium.

Disclaimer: This is for information purpose only, and should not be considered as a substitute for medical expertise. These are opinions from an external panel of individual doctors or nutritionists and not to be considered as opinion of Microsoft. Please seek professional help regarding any health conditions or concerns. Medical advice varies across region. Advice from professionals outside your region should be used at your own discretion. Or you should contact a local health professional.