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Weekly · Sunday Morning

Five longevity claims.
Worth your time.
Every Sunday.

Last Sunday

Rapamycin extends mouse lifespan 9–14%
NAD+ precursors reverse aging in humans
Blue-light glasses improve sleep quality
Walking 10 min after meals blunts glucose
Verdict change — caffeine half-life downgraded

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I Got Tested for Microplastics — Whalespan

Content›Video›I Got Tested for Microplasti…

I Got Tested for Microplastics

Bryan Johnson6m · 2024-12-16

Claims Made

24

Claims Supported

10

Support Rate

42%

Support rate

10 of 24 claims supported

10 supported14 partial / not

Claims from this content

22

✓Well SupportedRepeated skin absorption of BPA from receipts can lead to significantly elevated BPA levels, particularly in individuals like cashiers who handle them regularly.✓Well SupportedReverse osmosis water filtration is an effective method to obtain pure water free from contaminants like PFAS, pesticides, heavy metals, and microplastics.✓Well SupportedAvoid cooking with non-stick pans coated with 'forever chemicals'; opt for titanium, ceramic, or cast iron.✓Well SupportedUsing HEPA air filters and opening windows can remove most indoor microplastics from the air.Well Supported

More from Bryan Johnson

Bryan Johnson's Blueprint Rapamycin Protocol

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A. Volkovreader

4h

Bookmarking — the dossier-vs-overview split is the right call. Most of the time I want overview; sometimes I want receipts.

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N. Park

2d

Would love a "what would change this verdict" RSS feed. Sign me up if it exists.

✓

Storing food in non-plastic materials like glass, ceramics, or stainless steel is recommended to avoid microplastics.

✓Well SupportedOpting for clothing made from 100% natural fibers can prevent shedding of microplastics, unlike synthetic fibers.

◐Partially SupportedMicroplastics were found in every human testicle in a study of 23 men, with a plastic concentration nearly three times higher than in pet dogs.

◐Partially SupportedThe brain of a deceased adult human contains approximately 0.5% of its total weight in microplastics.

✓Well SupportedUsing glass, stainless steel, or ceramic for food and beverage storage can reduce microplastic exposure.

◐Partially SupportedBryan Johnson uses a stainless steel water bottle filled from his own house as his only trusted source of hydration when out and about.

◐Partially SupportedDrinking tap water may be healthier than bottled water due to microplastic content.

◐Partially SupportedThe Blueprint microplastics test uses a blood sample to measure microplastic levels at various particle sizes.

◐Partially SupportedThere is no direct evidence that microplastics are absorbed through the skin via skincare products.

◐Partially SupportedCanned soup can have up to a 20-fold increase in BPA levels compared to non-canned alternatives.

◐Partially SupportedThe goal of the microplastics test is to build a large data set to understand intervention impacts on microplastic levels.

◐Partially SupportedSome refrigerator water filtration systems may not remove microplastics.

◐Partially SupportedHome and personal care items should prioritize natural materials like cotton, bamboo, linen, hemp, wool, and silk over plastics.

◐Partially SupportedInstalling a water filter at home may lower microplastic levels.

◐Partially SupportedMicroplastics can be inhaled and have been found in the brain.

◐Partially SupportedMicroplastics can be ingested through food, including by warming food in plastic containers.

◐Partially SupportedRemoving plastic containers from one's environment may help lower microplastic levels.

◐Partially SupportedFuture efforts may focus on removing microplastics from the human body.