Snapshot · Huberman Lab
Home reverse osmosis filtration systems, which remove virtually all microplastics and nanoplastics from tap water, cost between $300 and $600, and many also remineralize the filtered water.
Where this was said
At 24:04 · chapter starts 19:21
Bottled water contains up to 240,000 plastic particles/liter [1] — Andrew Huberman "A 2024 PNAS study using improved microscopy found bottled water contains an average of 240,000 microplastic and nanoplastic particles per l…" 36:20 . Reverse osmosis ($300–$600) removes virtually all particles. Stainless steel or glass bottles are the practical alternative.
Sea salt is a significant source of microplastics and nanoplastics because it comes from an ocean saturated with plastic waste. Switching to Himalayan pink salt or another non-marine salt source is a simple, inexpensive swap that meaningfully reduces ingestion of plastic particles.
Despite predictions that AI would eliminate radiologists, the Mayo Clinic's radiology staff grew 55% after AI arrived at reading scans.
In 2025, radiology was the second-highest paid medical specialty in America, with average incomes 48% higher than a decade ago.
A study across 3 hospitals found radiologists spent only 36% of their time reading scans — the part AI can do — with the rest being human judgment.
Robert Greene notes that one in six Americans is on some form of drug to deal with depression, suggesting a deep societal disconnection from meaningful experience.
Spencer Greenberg and Jeremy Stevenson analyzed almost 500 self-improvement techniques and found they all reduce to just 12 underlying psychological drivers.
Cold exposure has good short-term alertness benefits but the evidence base for long-term health benefits is much weaker than popularly believed.
In a randomized study of 20 habit-formation techniques run on hundreds of people, almost none of the techniques produced statistically meaningful results.
People given a tiny-habit fallback option (e.g. 10 squats instead of gym) were actually MORE successful at completing the full habit, not less.
The most effective habit-formation technique was 'habit reflection' — recalling a past successful habit, writing down what helped, then applying those lessons to a new habit.
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