Why Onion Juice Caught Researchers’ Attention
Onions are more than just flavor boosters. They’re rich in sulfur compounds — specifically quercetin and organosulfur molecules — which play key roles in detoxification and cellular defense. These compounds are known for their antioxidant and anti-inflammatory properties.
In traditional wellness practices from Asia and the Middle East, diluted onion juice was sometimes used as a natural tonic for vision support. While not a replacement for professional care, it was believed to strengthen the optic nerves, improve tear production, and reduce mild eye strain.
Modern research supports parts of this idea. Studies on quercetin and sulfur compounds have shown that they can help combat oxidative damage in eye cells — the same process that contributes to cataracts and age-related degeneration.
The Science Behind Onion’s Potential
Here’s a breakdown of how onion compounds might benefit your eyes naturally:
