The brown onion or yellow onion is a variety of dry onion with a strong flavour. They have a greenish-white, light yellow, or white inside; its layers of papery skin have a yellow-brown or pale golden colour. It is higher in sulphur content than the white onion, which gives it a stronger, more complex flavour.

Though all vegetables are important for health, certain kinds offer unique benefits.

Onions are members of the Allium genus of flowering plants that also includes garlic, shallots, leeks and chives.

These vegetables contain various vitamins, minerals and potent plant compounds that have been shown to promote health in many ways.

In fact, the medicinal properties of onions have been recognized since ancient times, when they were used to treat ailments like headaches, heart disease and mouth sores

Here are 9 impressive health benefits of onions.
1. Packed With Nutrients

Onions are nutrient-dense, meaning they’re low in calories but high in vitamins and minerals.

One medium onion has just 44 calories but delivers a considerable dose of vitamins, minerals and fiber (2Trusted Source).

This vegetable is particularly high in vitamin C, a nutrient involved in regulating immune health, collagen production, tissue repair and iron absorption.

Vitamin C also acts as a powerful antioxidant in your body, protecting your cells against damage caused by unstable molecules called free radicals (3Trusted Source).

Onions are also rich in B vitamins, including folate (B9) and pyridoxine (B6) — which play key roles in metabolism, red blood cell production and nerve function (4Trusted Source).

Lastly, they’re a good source of potassium, a mineral in which many people are lacking.

In fact, the average potassium intake of Americans is just over half the recommended daily value (DV) of 4,700 mg (5Trusted Source).

Normal cellular function, fluid balance, nerve transmission, kidney function and muscle contraction all require potassium (6Trusted Source).

    Summary Onions are low in calories yet high in nutrients, including vitamin C, B vitamins and potassium.