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 health

Key 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 Andrology

Shop better underwear: 

Get 25% of Shinesty Underwear - Look for the “Modal” styles! - https://gtsrl.io/shinesty/kaitlinb 

Talk with Kaitlin:

• Book a Habit Audit Call with Kaitlin: tidycal.com/kaitlin/habit-audit

Make Nutrition Quick:

• Get the No-Time Nutrition Blueprint ($27): https://store.feelgreatwithkait.com/