Polyester underwear decimates male fertility and sperm. After 6 months of wearing polyester, all men had zero sperm.

After 6 months of wearing a polyester sling, all men had ZERO sperm.

At the beginning of the study: • 64.3% of men had sperm count 41–60 million/ml • 35.7% of men had sperm count >60 million/ml • 0% had sperm count below 40 million/ml

After 3 months: • 28.6% had near-zero sperm count (0–1 million/ml) • 71.4% had low sperm count (2–10 million/ml) • 0% were above 10 million/ml

After 6 months: • 100% of men had 0 sperm (azoospermia) • 0% had any detectable sperm

So basically, they went from normal → heavily suppressed by 3 months → completely wiped out by 6 months.

Even after they removed the polyester, the effect persisted for months.

1 month after removal: • 14.3% had 0 sperm • 50% had 1–10 million/ml • 35.7% had 11–20 million/ml

3 months after removal: • 35.7% had 11–20 million/ml • 64.3% had 21–40 million/ml • 0% were above 40 million/ml

6 months after removal: • 0% had low sperm counts (<20 million/ml) • 71.4% had 41–60 million/ml • 28.6% had >60 million/ml

So basically: near-zero → partial recovery at 1 month → solid recovery by 3 months → back to normal range by 6 months. Interestingly, there were no differences in testosterone, LH or FSH.

Polyester was also tested on female dogs.

After 12 months of wearing the polyester pants, there were drops in: ◇ Estrogen ◇ Progesterone Including a massive 90% drop in progesterone during the estrus phase of their cycle, where ovulation happens and fertility peaks.

Only 2 of the 7 dogs wearing polyester got pregnant, whereas all of the dogs without it got pregnant. Even a polyester / cotton mix was sufficient to reduce fertility.

The theory proposed by the researchers is that the friction between the reproductive tissue and the polyester. Essentially it's like static electricity. This is evident within hours of wearing polyester. There's also a possible reason that it just heats the tissue up too much from this. But both mechanisms are relatively uncertain. And yes, these studies were all small, and they came out of one lab. But the results are consistent, and shouldn't be ignored. Polyester is extremely common in both men's and women's underwear. The good news is that the effect was reversible in both men and women, so if you're trying to stay fertile, then ditch them ASAP and you should be fine.And for men - if you are going to wear polyester underwear, then at least don't wear the tight nut hugging type.

Source: https://x.com/Outdoctrination/status/2041339678503346390?s=20 / https://x.com/Outdoctrination/status/2037227258944106719?s=20