Peter Attia [1] has a great podcast about many aging/healthspan issues. I listen to the free version but there is also a paid version of the podcast with more info.
The book Lifespan [2] from David Sinclair is also a fantastic source. Finally, if you can wade through some of the questionable statements and claims, the book The Longevity Paradox [3] from Steven Gundry does have some useful info.