Have you ever wondered if your workout clothes could be affecting your health? Those comfy, stretchy leggings and sports bras might be doing more than supporting your workouts—they could be exposing you to harmful chemicals. Here’s what the research says.
What Are Microplastics, and Why Should You Care?
Microplastics are tiny plastic particles, less than five millimeters in size. They’re everywhere—in the air, water, and even in our clothes. They fall into two categories:
Primary microplastics: Released as small particles directly into the environment, like fibers shed from clothing.
Secondary microplastics: Created when larger plastics (like bottles or bags) break down into smaller pieces.
Shockingly, clothing is the world’s largest source of primary microplastics, accounting for 35% of emissions. This happens because about 70% of global clothing is made from synthetic materials like polyester, nylon, and spandex. As you wash and wear these fabrics, tiny fibers break off and enter the environment—and potentially your body.
The Connection Between Microplastics and Endocrine-Disrupting Chemicals
Here’s where it gets even more concerning. Research shows that microplastics aren’t just tiny pieces of plastic—they can also carry harmful chemicals, including endocrine-disrupting chemicals (EDCs) like BPA and phthalates. EDCs are known to interfere with your body’s hormonal systems.
Scientists have found evidence of microplastics in:
Human blood, lungs, kidneys, livers, reproductive organs, and even placentas (Ragusa et al., Environment International, 2021).
These particles may disrupt hormonal systems like the hypothalamic-pituitary-ovarian axis, which is critical for reproductive health.
Some studies also suggest microplastics can damage immune cells and alter the body’s normal immune responses.
Why Workout Clothes Are a Bigger Concern
Workout clothes, like leggings and sports bras, are often made from synthetic materials. While these fabrics are designed for performance, they might pose unique risks:
Close Contact: Tight-fitting workout gear sits directly against your skin, which could increase exposure to harmful chemicals. Research shows that microplastics can penetrate the body through sweat glands, hair follicles, and small skin wounds.
Sweating: Preliminary research suggests that sweating can enhance the absorption of chemicals and microplastics through the skin (Health & Place, 2020). Since we tend to sweat more in workout gear, the risk could be higher.
Healthier Alternatives for a Healthier You
What can you do? Start by choosing natural fabrics like cotton instead of synthetic materials. Cotton is free from harmful chemicals and doesn’t release microplastics into the environment—or your body.
If you’re ready to make the switch, check out NATURRE, my conscious fashion boutique that prioritizes your health and the planet. Our first product? Cotton leggings made of 95% cotton, designed to be breathable, non-toxic, and free from synthetic materials like polyester or spandex.
Shop NATURRE leggings today and take a step toward a healthier, more sustainable wardrobe!
10% of the proceeds is donated to my non-profit group The Womens Mindfulness Collective.
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Written by Ashlee Sunshine
Founder of Sunshine Paradise Retreat
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