Scientists have identified a substance found in living things that seems to correlate directly with a creature’s lifespan. Mice have very low levels of this compound, while Galapagos Tortoises have some of the highest levels (and can routinely live over 150 years).

This substance is an antioxidant-enzyme called Superoxide Dismutase (SOD). SOD is usually created internally and while all humans have it, our levels can vary widely, and researchers speculate that this may be part of the puzzle of why some people (and cultures) live longer than others.

SOD is important for protecting cells and it helps control the cell’s ability to remove toxins. Those with high levels of SOD have an increased ability to remove toxins and repair cells, which is perhaps the reason it is correlated with longevity.

It deactivates a free radical called superoxide with a process called dismutation, turning the free radical into hydrogen peroxide which breaks down into harmless oxygen and water.

SOD is said to be 3,500 times more potent than Vitamin C, and is so important to health that production begins in the womb, before a baby is even born.

We’ve known for years that free radicals can contribute to disease and lead to premature death, and antioxidants like SOD can help slow this process.