Health and longevity books, briefed
Fifteen health books in five points each. This is the shelf with the strongest financial incentives behind it, so it is the one to read most carefully.
Check what the book is attached to
A health book frequently sits at the front of a business: a clinic, a supplement line, a programme, a testing service. That does not make the content wrong, and it does shape which evidence gets emphasised and which caveat gets left in the endnotes.
The useful question is not "is this author honest" but "what would this book have to concede for the business behind it to look worse". Books with nothing to sell read noticeably differently.
Where the shelf is strong and where it is speculative
- Well supported: sleep duration and its consequences, the effects of regular movement, the basics of cardiovascular and metabolic risk. Boring, consistent, and the bulk of the achievable benefit.
- Genuinely contested: most specific diet frameworks. Nutrition research is difficult to run well, and confident books are usually more confident than the underlying studies.
- Ahead of the evidence: much of the longevity and supplement material. Interesting, sometimes mechanistically plausible, and frequently based on animal work that has not been replicated in people.
A brief is not a consultation
Five points cannot carry a dose, an interaction, or the condition that makes standard advice wrong for you specifically. If a brief here prompts a change to medication, a diagnosed condition or a pregnancy, that is a conversation with a doctor, not a summary.