Consensus Report
Fasting
Strong Consensus
out of 5
Based on 24 videos (38 hours analyzed) across 5 experts · Updated 2026-03-19
Expert Positions
The Verdict
All 5 experts endorse some form of fasting, but they differ substantially on protocol and emphasis. Huberman and Patrick are the strongest advocates, with dedicated episodes covering time-restricted feeding and its circadian, metabolic, and autophagy benefits. Johnson practices a strict 20-hour fast daily. Hyman practices a 14-hour overnight fast and frames fasting as a hormetic stress. Attia is the most cautious — he experimented extensively with prolonged fasting but moved away from it due to muscle loss concerns and a lack of objective biomarkers proving benefit.
Where They Disagree
Attia argues that time-restricted feeding benefits are primarily due to caloric restriction, not the fasting window itself — while Huberman and Patrick emphasize the independent circadian and autophagy benefits of meal timing.
Attia moved away from prolonged fasting protocols due to concerns about muscle mass loss and lack of objective biomarkers — while Patrick and Longo advocate for periodic prolonged fasting or fasting-mimicking diets for stem cell activation and immune rejuvenation.
+ 3 more disagreements in the full report
About This Analysis
This consensus report on Fasting is based on 24 videos (38 hours analyzed) from five longevity experts: Andrew Huberman, Peter Attia, Rhonda Patrick, Bryan Johnson, and Mark Hyman. Each expert's position was independently analyzed from their published video content, including lectures, podcast episodes, and Q&A sessions with 1,000+ guest scientists.
The full report includes 7 key findings, dosage and protocol details, expert deep dives with direct video citations and timestamps, risk considerations, and related supplement synergies.
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