Snapshot · The Peter Attia Drive
ConsumerLab testing found that only 5 of 13 tested ashwagandha supplements contained the amount of standardized bioactive withanolides stated on the label.
Where this was said
At 48:35 · chapter starts 45:45
The supplement landscape for sleep is vast, poorly regulated, and often misleading. Attia narrows to those where popularity and evidence intersect. Glycine, a nonessential amino acid and inhibitory neurotransmitter abundant in collagen, shows modest sleep benefits across three human studies — not a large effect size, but an excellent safety profile at low cost. Magnesium is mechanistically compelling: it's required for melatonin synthesis and GABAergic signaling, and deficiencies are common. Yet systematic reviews and meta-analyses are lukewarm. Even magnesium L-threonate — the form with best blood-brain barrier penetration in animal models — showed no sleep effects in a direct human trial. Ashwagandha shows a small but statistically significant signal across 5 RCTs in ~400 participants at doses ≥600 mg/day for ≥8 weeks, but quality control is abysmal (only 5 of 13 brands tested accurately by ConsumerLab) and case reports raise thyroid and liver safety flags. Phosphatidylserine's positive evidence comes from bovine cortex-derived PS, now off the market due to mad cow concerns; soy-based PS trials have been largely negative. Yet Attia uses 400–600 mg alongside melatonin in jet lag protocols, based on consistent clinical experience of it helping patients fall asleep at biologically inappropriate times by blunting HPA axis activity and cortisol.
A meta-analysis of 5 RCTs in ~400 participants found a small but statistically significant positive effect of ashwagandha on sleep, strongest at ≥600 mg/day for ≥8 weeks.
Even strong supplement evidence is meaningless if the product doesn't match what was tested. Melatonin can be off by nearly 500%, ashwagandha quality control failures are routine, and supplements can contain contaminants or banned drugs. USP Verified, NSF Certified for Sport, ConsumerLab, and Labdoor are the only reliable quality checkpoints.
Mental health challenges are nearly universal — BetterHelp's own research found the majority of Americans experiencing symptoms right now.
When applying for Medicaid to cover nursing home costs, there is a 5-year look-back period that can disqualify applicants who gave away or spent down assets.
A broken pipe filled the Bad Friends studio with what the hosts identified as hydrogen sulfide — microscopic fecal aeroparticles — that the crew denied smelling.
Fei-Fei Li's father's liver surgery performed by a da Vinci robot resulted in 10 times less blood loss than a typical open liver surgery, thanks to laparoscopic precision.
Approximately 115 million adults in the US currently have prediabetes, most of whom are unaware, according to the Lingo sponsor segment.
Drug overdose deaths in the US fell from 110,000 to 80,000 in 2024, and then to roughly 70,000 — the largest single-year drop the CDC has ever recorded.
Men's overdose death rate fell 27% in a single year, outpacing the 23% drop for women.
The steepest decline in overdose deaths was among 15–24-year-olds, whose rate fell 37%.
Fei-Fei Li observed that on a given hospital shift, nurses walk miles just to fetch medicine and supplies, illustrating a clear use case for assistive robotics in healthcare.
We use essential and analytics cookies to run Vuci. To understand how the site is used: Privacy Policy.
Install Vuci on your phone
Add it to your home screen for a faster, app-like experience.
Install Vuci on your phone
Tap the Share button, then “Add to Home Screen”.
A new version is available
Reload to get the latest Vuci.