Beyond the book
Voices worth following
Five creators on X and five on Substack who write about health and longevity with attention to evidence. This list is editorial and is kept in content/voices.json.
On X
- Follow
Eric Topol, MD @EricTopol
Physician-scientist; author of Super Agers; writes Ground Truths.
831K followers · X API public_metrics, 2026-10-22
- Follow
Peter Attia, MD @PeterAttiaMD
Physician focused on longevity; author of Outlive (discussed in the book).
664K followers · X API public_metrics, 2026-10-22
- Follow
Layne Norton, PhD @BioLayne
Nutritional sciences PhD known for debunking diet and supplement myths.
233K followers · X API public_metrics, 2026-10-22
- Follow
Matt Kaeberlein, PhD @mkaeberlein
Biology-of-aging researcher; candid about what is and is not proven.
32K followers · X API public_metrics, 2026-10-22
- Follow
Andrew Steele, PhD @statto
Longevity scientist and author of Ageless; science communicator.
13K followers · X API public_metrics, 2026-10-22
On Substack
- Read
Your Local Epidemiologist · Katelyn Jetelina, PhD, MPH
Public-health science translated for everyday decisions.
416K+ subscribers · Substack /about page, 2026-10-22
- Read
Ground Truths · Eric Topol, MD
Deep dives on new medical research, including aging and prevention.
217K+ subscribers · Substack /about page, 2026-10-22
- Read
Sensible Medicine · Multiple physician authors
Physicians debating the strength of medical evidence. Opinions vary by author.
107K+ subscribers · Substack /about page, 2026-10-22
- David Sabatini wins $6 million dollars Oct 22, 2026
- This Fortnight in Medicine XXXVI Oct 21, 2026
- Read
Inside Medicine · Jeremy Faust, MD
An emergency physician on medical news and what the data actually show.
88K+ subscribers · Substack /about page, 2026-10-22
- Read
Brad Stulberg · Brad Stulberg
Evidence-informed writing on well-being, habits, and sustainable performance.
19K+ subscribers · Substack /about page, 2026-10-22
- 8 All-Timers on Becoming Your Best Oct 20, 2026
- One of the Most Underrated Skills in Life Oct 13, 2026
Inclusion is not endorsement. These creators are listed for evidence-focused reputation and reach. Their views are their own and may differ from the book. Counts were verified on 2026-10-22; latest Substack posts were fetched when this site was built (Oct 22, 2026).
X posts are not shown because X content can't be fetched at build time without an API key. To embed later, add X's official embedded-timeline or embedded-post widget for each handle on this page. That would load X scripts and cookies in visitors' browsers, so it needs a privacy review first.