The evidence is convergent. Multiple independent sources reach the same conclusion, the underlying mechanism is well-characterized, and even the field's most cautious voices treat it as worth doing.
The intervention we think most contributes to my drop in blood microplastics is daily dry sauna (200°F, 20 min, ice pack on boys), which also helped clear many other environmental toxins, including several plastic-related chemicals.
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The therapy we think most responsible for this reduction is sauna as it also eliminated most environmental toxins in my body, including those linked to various plastics (200 F, 20 min daily w/ ice on the boys).
The therapy we think most responsible for this reduction is sauna as it also eliminated most environmental toxins in my body, including those linked to various plastics (200 F, 20 min daily w/ ice on the boys).
Sauna (dry). My toxin blood panel confirms sauna clears plastic related chemicals: BPA, phthalates, PFAS, flame retardants, pesticides. The plastic particles themselves are too big to sweat out directly. Heat may activate other clearance routes: bile flow through the liver, the cell's internal cleanup system, and the gut barrier.
Sauna eliminated 85% of microplastics from my ejaculate. Nov 2024: 165 particles/mL July 2025: 20 particles/mL Nearly identical drop in my blood same time period: Oct 2024: 70 particles/mL May 2025: 10 particles/mL
I reduced microplastics in my sperm by 85% and I think it was the dry sauna https://t.co/ofYbTX41Lj more details: [@bryan_johnson: I eliminated 85% of microplastics from my ejaculate. Nov 2024: 165 particles/mL July 2025: 20 particles/mL Nearly identical drop in my blood same time period: Oct 2024: 70 particles/mL May 2025: 10 particles/mL
Sauna (200 F, 20 min daily)
Possible explanations for my improved fertility health + vascular health benefits from daily sauna + near complete elimination of microplastics from my blood and ejaculate + dramatic detoxification of systemic environmental toxins, including plastic leachables + icing the boys while in the sauna
The therapy we think most responsible for this reduction is sauna as it also eliminated most environmental toxins in my body, including those linked to various plastics (200 F, 20 min daily w/ ice on the boys).
The sauna 200° Fahrenheit, 20 minutes a day, dry sauna, ice on the boys. In fact, we think it's possible this therapy was also responsible for reducing environmental toxins inside my body as well. It's not conclusive evidence, but it strongly suggests that the right sauna protocol could reduce microplastics in the body.
The protocol I used was 200° Fahrenheit, 20 minutes a day, 100% cotton clothing, and ice on the boys. If you don't ice the boys, the sauna will actively hurt your fertility.
4–7 sauna sessions per week, 20 minutes at 80°C+, reduce cardiovascular mortality risk by 40% over a decade.
Regular sauna use raises BDNF and improves verbal memory in older adults.
Sauna protocols only generate the longevity effect when sessions exceed 30 minutes.
Hot-tub bathing yields cardiovascular benefits comparable to traditional Finnish sauna at matched core-temp dose.