It's a while since I read the book but what I remember is him saying that he personally chooses to use it but the evidence is not strong enough to give a definite recommendation so basically, make your own choice.

The book is overall excellent and extremely data driven. I have no idea why a book recommendation, on topic, can get downvoted on HN nowadays.

Because outside of a few narrow technical spheres the HN hivemind isn't data driven, it's cynicism driven.

The problem is what he presents is not scientific or medical consensus. The data is on animal studies and it is irresponsible to push a prescription medication for not its intended purpose

In the context of new models showing cell identity drift being a threat to longevity (vs simple cell breakdown over time), controlling “low-level” and chronic infection makes more and more sense.