Did you know that microplastics have been found in the uterine lining?
What used to seem like an environmental issue affecting only oceans and marine life has now become an intimate reality for women – and that’s deeply concerning. In this blog, we’ll explain what’s going on, what the risks are, and how conscious choices in your bathroom, underwear drawer, and bedside table can truly make a difference.

What are microplastics?

Microplastics are tiny plastic particles (<5 mm) that are either formed by the breakdown of larger plastic items or are intentionally added to products like scrubs, cosmetics, or synthetic clothing. They’ve now been found everywhere: in water, food, air – and even in human tissue.

Research: Microplastics found in the uterine lining

A study published in Science of The Total Environment (Ma et al., 2023) shows that microplastics have been detected in the endometrium – the inner lining of the uterus. This is the first time these particles have been found in this specific part of the body. Using infrared spectroscopy, the researchers identified various types of plastic, including polyethylene and polypropylene – materials commonly used in packaging and textiles.

📚 Source: Ma, Y., Jin, X., Hou, J. et al. (2023). Detection of microplastics in human vaginal and vulvar tissue. Science of The Total Environment, Volume 895, 166930.
Read the full study

Why is this a problem?

The vulva and vagina are highly sensitive and vascularized, with mucous membranes that absorb substances easily. The presence of microplastics in these areas can lead to:

• Irritation and inflammation

• Hormonal disruptions (due to hormone-like chemicals in plastics)

• Imbalances in the vaginal microbiome

• Long-term health risks that are still poorly understood

We don’t know everything yet – but one thing is clear: microplastics do not belong there.

How do microplastics get there?

You might think microplastics only enter the body through synthetic underwear or plastic packaging – but it’s more complex than that. According to Ma et al. (2023), certain daily habits are strongly linked to increased microplastic exposure. Their questionnaire-based research revealed key lifestyle factors:

• Smoking: Cigarette filters are made of plastic (cellulose acetate) and are a known source of microplastic particles.

• Drinking tea, milk tea, and soda: Especially tea bags made of nylon or PET (plastic) can release millions of particles when steeped in hot water. Water used in production and packaging processes also contributes.

• Chewing gum: Many types contain synthetic polymers as their base, which may be swallowed during chewing.

• Using cosmetic products like toothpaste and scrubs: These often contain microplastics.

These substances can enter the body through ingestion, inhalation, or direct contact with mucous membranes. The endometrium is especially vulnerable, but the exact effects on fertility and long-term health are still not fully understood.

What can you do?

The good news: you can take action with just a few conscious steps:

• Avoid food and drinks packaged in plastic whenever possible – especially ready meals and carbonated drinks.

• Choose loose-leaf tea in a tea infuser or plastic-free tea bags.

• Switch to plastic-free chewing gum, mints, or peppermint.

• Use personal care products with natural ingredients, free from added plastics.

• Choose organic, plastic-free menstrual products – for example, from the brand Yoni.

• Wear underwear made from natural materials like organic cotton.

Why a lubricant in a glass bottle makes a difference

At Aia, we consciously choose glass bottles. Not because they “look nice,” but because they’re safer and more sustainable – for your body and the planet.

💧 Here’s why glass matters:

• No microplastic leaching: Glass is inert and doesn’t release particles, unlike some plastics.

• Free from BPA and phthalates: Glass contains no hormone-disrupting chemicals.

• Reusable and recyclable: A sustainable packaging choice you can keep by your bedside with confidence.

In Conclusion

Microplastics in the vagina may sound like science fiction – but they’re already a reality. Fortunately, there are alternatives. By making conscious choices in your personal care routine, you protect your body and contribute to a cleaner planet.

✨ At Aia, we believe that sexual wellness starts with radical self-care. And self-care begins with knowing what you put on your body – and what kind of bottle it comes in.

👉 Discover our products at www.timeforaia.com and choose softness, safety, and beauty – without plastic.