Onions are toxic to dogs, cats and many other animals. However onions contain a number of antioxidant compounds that are effective in neutralizing the free radicals present in the human body. Chromium, which assists in regulating blood sugar and phytochemicals that help improve immunity, reduce inflammation and heal infections.

They have been used as nutrition to for more than 7,000 years and today the World Health Organization confirms that they are beneficial for people suffering from atherosclerosis. Health experts acknowledge the fact that onions help patients with chronic asthma, allergic bronchitis, and common cold-related cough syndromes.

Onions also contain mineral components such as calcium, magnesium, sodium, potassium, selenium, and phosphorus, and they are a good source of vitamin C, vitamin B6, and dietary fiber.

Onions have been used for thousands of years for cooking but also raw, pickled in vinegar, fried in oil, baked or boiled. However, onions can be also used to prevent tooth decay and oral infections. Chewing raw onions for few minutes can kill germs present in the oral and surrounding areas like the throat and lips.

The smell of onions can be used as insect repellents as well as a form of sting treatment.

Onion juice mixed with honey or olive oil is said to be the best treatment for treating symptoms or signs of acne and can relieve sore throats and coughing symptoms.

Onions are said to increase sex drive. A tablespoon of onion juice along with one spoon of ginger juice can boost libido and sex drive.