Eating red onions provides numerous health benefits. They are rich in antioxidants like quercetin, which helps combat oxidative stress and inflammation, potentially lowering the risk of chronic diseases such as heart disease and cancer. Red onions also contain fiber, vitamins C and B6, and potassium, essential for overall health and immune function. They may support digestive health by promoting beneficial gut bacteria and aiding in digestion. Additionally, their sulfur compounds have antimicrobial properties that could help fight infections. Red onions add flavor and crunch to salads, sandwiches, and cooked dishes, making them a versatile and nutritious ingredient.