Related coverage on microplastic exposure

Sperm Motility Testing at Home: What the Numbers Mean and How the Kits Work

Bryan Johnson is biohacking his body so he can live forever. He tests his sperm motility regularly and uses saunas to remove microplastics from his sperm.

Your Sweat is Unlocking Toxins in Plastic—Here’s Why Natural Fibers Matter

Natural fibers like organic cotton, hemp, and wood-based fabrics such as Tencel and modal offer a safer, breathable alternative to synthetic materials. These fabrics don’t shed microplastics, don’t contain toxic flame retardants, and allow your skin to breathe without the risk of chemical exposure.