Onions are very rich in polyphenols, vitamins A, B6, B-complex and C, low in calories, have powerful health benefits. That plays an important role in preventing diabetes. Diet with onions, reduce the risk of developing insulin resistance. It contain lots of fiber and antioxidants.

Onions Prevent Blood Clots

According to a recent study published in the Journal of Clinical Investigation, rutin, a chemical compound found in large quantities in onions and apples , helps preventing dangerous blood clots. rutin was shown to inhibit both platelet accumulation in the arteries and fibrin formation in the veins.

For Brain Health

Many studies found that daily consumption of onions can help to reduce the brain damage, that linked to the  stroke or a clot. It can improve your mental health.

It Contains Folic Acid

Folic acid, or vitamin B9 is an essential component of brain function and contributes to the emotional and mental health. A portion of 125 ml (1/2 cup) of green onions contains 9% of the recommended daily intake of folic acid.

Onions Strengthen Bones

According to the study of the Medical University of South Carolina, women who follow the diet with onions they have 5% higher bone density than women who consumed only once a month or less. Women who eat onions regularly may reduce 20% the risk of hip fracture compared  those who don’t follow the diet with onions.

Onions Reduce High Blood Pressure

Onions like apples and berries are an excellent source of quercetin, contains antioxidant. A study by the University of Utah, published in 2007, showed that quercetin reduces blood pressure. It can also protect you against blood vessel wall deterioration (damaged vessels increase the risk of cardiovascular disease.)

Low in Calories

Better yet, onion is a low calorie content food. For a medium sized onion, there are 44 calories.

Good Source of Fiber

Onions also provide a good source of fiber. A medium sized onion provides 1.9 grams of fiber, while a 100 gram serving contains 1.7 grams of fiber.

Good Source of Vitamin C

A 100 gram serving of onions provides nearly 12% of the recommended daily intake of vitamin C, whereas a medium sized onion provides 13% of daily recommended intake of vitamin C. Like garlic, onions are very rich source of selenium that may have protective properties against the cancer.