According to health specialists, onions are rich in antioxidants and sulfur-containing compounds that may help reduce inflammation in the body. These elements are believed to support heart health by improving blood circulation and helping regulate cholesterol levels. Some doctors note that people who include onions in their meals more often tend to show better cardiovascular markers over time.

Doctors also point out that onions can play a role in strengthening the immune system. Their natural antibacterial properties may help the body fight certain infections, while their vitamin C content supports immune defense. In addition, onions have been linked to improved digestion, as they contain prebiotics that help nourish healthy gut bacteria.

However, experts caution that moderation is key. For some individuals, eating too much onion—especially raw—can cause digestive discomfort or irritation. Doctors recommend incorporating onions as part of a balanced diet rather than relying on them as a cure-all. When eaten wisely, this humble vegetable may offer more benefits than most people ever realized.