• Boosts immunity. Raw onions are an excellent source of vitamin C, which aids in enhancing the body’s immunity. …
• Promotes cardiovascular health. …
• Aids in digestion. …
• Reduces inflammation. …
• Enhances bone health. …
• Boosts brain function. …
• Prevents cancer. …
• Promotes skin health

All types of onions are good for you, but this dark reddish-purple variety, sometimes called purple onions, has especially high levels of quercetin and other flavonoids. Red onions have a mild, sweet taste and add color and flavor to many dishes. Use them raw as a crunchy addition to salads, sandwiches, and salsa

Onions can be tricky to choose because sometimes they look great on the outside, but the inside is rotten. As you choose red onions, look for dry ones with no scent. They should feel heavy for their size, be firm, and have no bruises