EPISODE · Nov 25, 2025 · 27 MIN
Polyester & Fertility: The Hidden Connection No One Warned Us About
from Nutrition, Metabolism, Blood Sugar Strategies by Feel Great with Kait
What if the underwear you put on every morning was quietly impacting your hormones, fertility, and long-term health?Polyester is everywhere — in leggings, underwear, sports bras, socks, pajamas — and new research shows its microplastics are showing up in semen, ovaries, placentas, and even umbilical cords. In this episode, we break down exactly how polyester clothing affects reproductive health, what the science says, and what you can do today to protect your future fertility.In this episode, you’ll hear:01:20 – What polyester really is and why it’s showing up in 60% of our clothing 06:40 – The shocking impact of polyester and microplastics on male fertility 11:03 – How microplastics infiltrate female reproductive tissues 17:22 – The fertility crisis by the numbers: IVF rates, infertility rates, sperm decline 22:05 – The first 3 things you should do today to protect your reproductive healthKey Stats mentioned: – Polyester makes up ~60% of global clothing production – Textile Exchange, 2023– Microplastics found in 88% of human lung samples – Jenner et al, 2022– 100% of tested placentas contained microplastics – Ragusa et al, 2020– 1 in 5 women struggle to get pregnant after 1 year; 1 in 8 couples use fertility treatment – CDC, 2023– Polyester underwear increases testicular temperature 1–2°C – Italian Journal of AndrologyShop better underwear: Get 25% of Shinesty Underwear - Look for the “Modal” styles! - https://gtsrl.io/shinesty/kaitlinb Does your calendar dictate your nutrition? Grab The No-Time Nutrition Blueprint: http://store.feelgreatwithkait.com/ntnReady to stop trading your health for your wealth?Apply for coaching with Kaitlin: https://tidycal.com/kaitlin/apply
What this episode covers
What if the underwear you put on every morning was quietly impacting your hormones, fertility, and long-term health? Polyester is everywhere — in leggings, underwear, sports bras, socks, pajamas — and new research shows its microplastics are showing up in semen, ovaries, placentas, and even umbilical cords. In this episode, we break down exactly how polyester clothing affects reproductive health, what the science says, and what you can do today to protect your future fertility. In this episo...
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Polyester & Fertility: The Hidden Connection No One Warned Us About
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