There is some interesting research into the phytochemicals in plants. Some of these phytochemicals up-regulate longevity genes and some of them are in green teas. Some berry and seed extracts can extend life span 28%. Ive resonantly become interested in things found in food and herbs that up-regulate longevity genes. Ive started writing about what I'm finding so if you are interested here are the links.
https://steemit.com/technology/@tombot/can-biohacking-double-lifespan-1-0

https://steemit.com/health/@tombot/can-biohacking-double-lifespan-2-0