The  onion is  a top health food, containing sulphur compounds that are natural antibiotics offering protection from cancers and heart disease. The powerful diallyl sulphide gives onions its strong smell. Onions contain numerous flavonoids, such as quercetin. These antioxidant compounds help prevent blood clots and protect against heart disease and cancer.

The vegetable  has an  anti-inflammatory and antibacterial action, and can minimize the nasal congestion of a cold. In addition, onions are very rich in chromium, a trace mineral that helps cells respond to insulin, and are a good source of vitamin C and other trace elements

When stored, vitamin C will diminish over time. Store onions in an airy, dry, cool place.

150 g of onion contains

• 63 Kcalories
• 1.4 g protein
• 15 g carbohydrate
• 2.1 g fibre
• 9.6 mg vitamin C
• 29 mcg folate
• 1.5 mg niacin
• 33 mg calcium
• 216 mg potassium
• 28 mg magnesium
• 0.8 mcg selenium
• 24 mcg chromium