Hi @bonniemc728, Welcome to Connect. While we wait for @billmoskowitz to reply to your question to what medical organization he was referring to, I thought I would share a few references with you.

-- American Aging Association:
https://www.americanagingassociation.org/
-- Fight Aging!:
https://www.fightaging.org/
-- National Institute on Aging:
https://www.nia.nih.gov/
-- American Academy of Anti-Aging Medicine:
https://www.a4m.com/
And my favorite - McMaster Optimal Aging Portal:
https://www.mcmasteroptimalaging.org/
Do you mind sharing what brought you to Connect? Were you looking to answer a question?