Onions are more than a simple garnish—they’re a nutrient-dense food that can support overall health when eaten regularly. They contain antioxidants and sulfur compounds that help protect cells from long-term damage.
Their anti-inflammatory and antioxidant properties are linked to lower risks of certain cancers and improved heart health, supporting healthy blood vessels and circulation. Onions may also gently aid blood sugar control as part of a balanced diet.
Regular, moderate onion intake has been associated with better bone density, particularly in older adults, and stronger immune response thanks to vitamin C and beneficial plant compounds.
Moderation matters. About 30–50 grams per day is enough to gain benefits, while people with digestive sensitivity, low blood pressure, or eye inflammation should use caution and consult a healthcare professional if needed.