Onions, like garlic, are members of the Allium family, and both are rich in powerful sulfur-containing compounds that are responsible for their pungent odors and for many of their health-promoting effects.

Onions have shown in clinical studies to reduce blood sugar levels; can help lower cholesterol levels and lower blood pressure which helps to reduce your risk of heart attack, stroke, and heart disease; and can help protect against many cancers including ovarian and prostate cancer.