Onion (Allium cepa L) contain the chromium that serves to prevent diabetes mellitus. Like garlic, onions are also important for health.

However, in contrast with garlic, sulfur components in onions is in the form of allyl propyl disulphide. These components play an important role in lowering blood glucose, so good for diabetics.

Onions are also good for preventing heart attacks and strokes. Components of sulfur in the onion will synergize with chromium and vitamin B6 to reduce homocysteine levels in the blood.Onions also have anti-inflammatory properties.

Components of isothiocyanates (also found in broccoli) has been reported to inhibit cancer cells.Components are derived from compounds glukosinolates after changing onion bitten, chewed and digested. Onions also contain flavonoids components very good for preventing colon cancer.

The experts at the University of Bendi Switzerland has examined the benefits of bone onions.Provençal onion consumption every day for 4 weeks can increase bone strengthening calcium concentrations up to 17 percent