How This Molecule Transforms Energy, Immunity & Longevity

4 Sept 2025 · 49 min
49:18

Conversation (German transcript) between Ben Greenfield and Dr. Anurag Singh about Urolithin A. Covers mechanisms (mitochondrial biogenesis, efficiency, and mitophagy/autophagy), effects on skeletal muscle, immune-cell mitochondrial ‘recharging’, reduced inflammation, and potential cognitive benefits. Reports randomized clinical work (middle-aged adults), dose-ranging observations, timelines for biomarker and functional changes, and ongoing health‑span research.

Questions this video answers

1 g (1,000 mg) Urolithin A per day.

About 50 participants total: 25 placebo and 25 receiving 1 g Urolithin A.

Middle-aged to older adults, roughly 50–60 years in the mitoimmun study; other referenced studies included participants in their 70s and athletes.

Doses tested included ~250 mg, 500 mg, 1 g (showed increased effect), and 2 g (no additional linear benefit).

Acute absorption detectable in blood; mitochondrial turnover and biomarker changes observed in ~2–4 weeks; whole-body functional effects (strength/endurance) typically seen over ~2–4 months.

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