01/24/2026
Author
Shelley B Holistic Nutrition
Hot take: your yoga pants are likely messing with your hormones & fertility 👀
Most modern underwear, leggings and athleisure are literally plastic (polyester, spandex, nylon), exposing the body to BPA, PFAS and microplastics that absorb through the skin, disrupt hormones and impair fertility in both women and men - linked to lower s***m counts, ovulation issues, higher miscarriage risk and overall hormonal dysfunction.
Microplastics from clothing are now found in blood, placentas, ovaries, testicles and even the brain. They can damage eggs, s***m and early embryos, and can carry toxins straight into reproductive tissue.
One study showed that men wearing polyester underwear became temporarily sterile - s***m counts dropped to zero. Once they stopped wearing it, fertility returned. The fabric itself acted like birth control.
Good news? This is one of the easiest toxin exposures to reduce.
Start with what touches your skin the most → underwear + workout wear.
Use natural fibers especially for sleep and activewear → organic cotton, bamboo, merino wool, silk, h**p.
✨ I love Lezat for trendy, non-toxic pieces
👉 use code SHELLEYBHOLISTICNUTRITION @ https://www.lezat.com/?dt_id=2499809
✨ And Pact for comfy, everyday organic cotton basics @ https://wearpact.com/?utm_source=323519...
📖 Full deep dive + research here: https://sayerji.substack.com/.../your-underwear-and...
💬 Want to actually detox these gross substances from your body? DM me - this is what I help people do every day.
Your underwear shouldn’t double as birth control.
Polyester doesn’t love you back. 😉
LEZAT | Non-Toxic Fashion made in LA
LEZAT.COM
LEZAT | Non-Toxic Fashion made in LA
Welcome to my Substack—a space where I share insights, research, and reflections at the intersection of ancient wisdom and modern science. As the founder of GreenMedInfo.com, you will continue to receive health information to empower you here. Click to read Sayer Ji's Substack, a Substack publicat...