* Why we’re talking about this: The market for longevity supplements is growing faster than the research behind many of them. That’s why we asked longevity experts—which supplements have the strongest evidence behind them, and which are getting more attention than they deserve? ​Studies suggest that combining a protein supplements with an active lifestyle can help older adults build muscle mass. While these supplements have some interesting mechanisms for longevity and healthy aging, there’s little evidence backing up their effectiveness. “Ashwaghanda is the most nuanced of longevity supplements.