Onions May Boost Your Immune System
The polyphenols in onions act as antioxidants in the body, which protects it against free radicals. That helps boost and strengthen the immune system. Onions have a higher concentration of selenium than other vegetables. This trace mineral helps reduce inflammation and stimulates immune function. Immune cells that have a selenium deficiency tend to endure more oxidation, which can cause them to develop and reproduce inefficiently. The quercetin in onions has also been found to be beneficial to the immune system – this time in relation to allergies. Quercetin may reduce allergic reactions by stopping the body from producing histamines, which cause sneezing, crying and itching during a bout of allergies.
Onions Have An Anti-Inflammatory Effect
Onions have strong antioxidant properties that can reduce inflammation and stop harmful microorganisms from growing in the body. By measuring their phenolic contents, antioxidant properties and free radical scavenging activities. Researchers found that all varieties had protective properties, with the outer layers of the red variety being a particularly rich source of quercetin, and showing significant protection of DNA damage caused by free radicals.
Onions Are Heart-Healthy Vegetables
Onions may benefit heart health in a number of ways, including lowering blood pressure and reducing the risk of heart attack. Sulfur, which onions are high in, may act as a natural blood thinner and helps prevent blood platelets from clustering. Platelets aggregating is a known risk of heart attack and stroke. The quercetin in onions may also be a player in heart health, by potentially helping to prevent plaque buildup in the arteries, reducing the risk of heart attack and stroke.