Onions are a widely used vegetable known for their strong flavor and numerous health benefits. They belong to the Allium family, which also includes garlic, leeks, and chives. Onions come in various types, such as red, white, and yellow, each with its unique taste and culinary uses. They are rich in antioxidants, vitamins, and minerals, making them beneficial for heart health, immunity, and digestion. Onions can be consumed raw, cooked, or pickled, adding depth and aroma to various dishes. Additionally, they contain compounds like quercetin and sulfur, which have anti-inflammatory and antibacterial properties.