Leeks are a member of the all-powerful Allium family, which includes onion, garlic and chives, and therefore share many of the health benefits of these vegetables, according to helthymuslim. Leeks have a milder, sweeter taste than onions, and are not as rich in the anti-carcinogenic chemicals, but are important in the detoxification process. Eaten regularly, they are associated with helping to reduce blood pressure to healthy levels, and reducing the risk of strokes. They help to keep the arteries clear and supple by preventing a build-up of plaque. They have also been found to combat prostate and colon cancer, both reducing the risk and slowing the growth of tumors.

Leeks are also antibacterial, and, as such, and contribute to the protection against stomach cancer, destroying some of the bacteria in the gut that change harmless nitrates into cancer-causing nitrites.

Leeks contain small amounts of vitamins, minerals and fiber. They are a good source of vitamin B6, Vitamin C, folic acid, iron, manganese and fiber. They are diuretic and have the ability to eliminate uric acid, so they are beneficial for gout and arthritis.

Although leeks contain less of the protective compounds than onions or garlic, their milder taste allows them to be eaten in larger amounts.