So what does this mean for the antioxidants everyone clamors for? Synthetic antioxidants have failed to show any clear longevity benefit to humans, and that has been a problem for Harman ever since he conceived his theory. Although antioxidants definitely prevent damage, there is still no consensus on how much they forestall aging. “I’m glad there are challenges to the theory,” Harman says. “It’s the only way we get anything done.”
This article was originally published with the title Free Radical Shift.