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📚 Backed by scientific findings published in Ecotoxicology and Environmental Safety (Study ID: 40680448).

Bombshell Study Reveals:
2.3 Million Microplastic Particles Released Yearly From Plastic Toothbrushes Alone

Retchie Clint

July 14, 2025

MAKE THE CLEAN SWITCH TODAY

★★★★★ 50,000+ already made the switch

TOOTHBRUSHES SHED MICROPLASTICS

You’re Ingesting Plastic Every Time You Brush

A 2023 PubMed study (ID: 38092338) first revealed that plastic toothbrushes release up to 120 microplastic particles per brushing session — adding up to 88,000 fragments per year.

That was already disturbing. Then a 2025 study (ID: 40680448) found the real number is 26x higher — your plastic toothbrush sheds an average of 2.3 million microplastic particles per year.

Those particles don't just stay in your mouth. They enter your bloodstream, travel through your body, and accumulate in your organs and cells.

And the worst part? Most people have no idea this is happening.

FRICTION + PLASTIC = TOXIC PARTICLES

Why Is This Happening?

Plastic bristles are made from nylon and other synthetic materials that aren’t built to withstand repeated brushing and daily exposure to moisture and heat.

Over time, they gradually degrade, releasing microscopic plastic particles into your mouth - twice a day, every day.

Here is what's happening:

Repeated brushing friction: Constant back-and-forth motion wears down the nylon bristles, causing them to fray and fragment into microplastics.

Degrades into micro & nanoplastics: Heat and saliva from your mouth further weaken the material structure, breaking down nylon bristles into micro and nanoplastics.

Absorbed into the body: These micro and nanoplastics enter your bloodstream through your highly absorptive gum & mouth tissues while also often being inadvertently swallowed.

THE HEALTH RISK ISN’T JUST ORAL

What Happens to Microplastics Once They're in Your Body?

Research shows that these tiny plastic fragments are inadvertently swallowed, absorbed through gum & mouth tissues, and even enter your bloodstream. Once inside, they travel throughout your body, embedding themselves in organs, disrupting biological functions, and triggering harmful reactions on a cellular level.

Health Effects Include:

Hormone Disruption & Infertility: Microplastics carry endocrine-disrupting chemicals like BPA and phthalates, which can affect hormone balance and contribute to reduced sperm quality, lower fertility, and reproductive issues.

Inflammation & Immune Stress: Your body treats microplastics as foreign invaders, triggering chronic inflammation that weakens immunity over time.

Toxin Accumulation: Microplastics can act like sponges, absorbing heavy metals and pesticides, then releasing them into your system.

Oxidative Stress & Cellular Damage: Long-term exposure has been linked to cell damage, DNA stress, and increased risk of degenerative diseases.

BASED ON RESEARCH, HERE’S A SAFER ALTERNATIVE

The PRIMALS Boar Bristle Toothbrush: A Plastic-Free Solution

The PRIMALS Boar Bristle Toothbrush is specifically designed to address the risks outlined in this article. It offers a safe, effective, and completely plastic-free way to brush — without exposing your body to microplastics.

100% Boar Bristles: Biodegradable, natural, and microplastic-free.

Sustainable Bamboo Handle: Plastic-free, eco-friendly, and anti-microbial.

Zero Nylon or BPA: No synthetic materials that break down and shed.

Safe Brushing Backed by Nature: A return to ancestral brushing - without synthetic risks.

Make the Switch Now

They switched to PRIMALS toothbrushes. Here’s the difference.

Thousands have replaced plastic toothbrushes with PRIMALS boar bristles - no toxins, no microplastics. Here’s what they’re saying about the cleaner, healthier way to brush.

Join 100,000+ Who Already Switched ➡

Clinician Reviewed

Independent Clinician Evaluations

Clinicians receive product samples and are never compensated to submit evaluations.

Dr. Preeti Kallu

Verified clinician

SpecialtyInternal medicine

Years in practice26

Uses animal fibers to eliminate microplastic intake while brushing

I love the Boar Bristle & Bamboo Toothbrush because the bristles are composed entirely of animal fibers. That means they are made without plastic like many toothbrushes you would find at the store. Research in Environmental Pollution found that standard plastic toothbrushes can and often do shed microscopic particles or "microplastics." Over years of brushing, those microplastics can quickly accumulate, so I encourage patients to explore plastic-free alternatives like this one from PRIMALS. It's great that the boar bristles can be effective for cleaning the teeth and protecting the enamel as well. There is a lot that I like about this product, and I would happily recommend it as part of an oral care routine.

Fewer microplastics Protects enamel Daily oral-care

Dr. Kenneth Luckay

Verified clinician

SpecialtyFamily medicine

Years in practice38

Encourages gentler brushing with soft and flexible bristles

I highly recommend the PRIMALS toothbrush to patients whose gums may be irritated by stiff nylon bristles. A review of research found that hard-bristle toothbrushes can cause more gum abrasions than softer options, suggesting that soft and extra-soft brushes tend to be safer choices for most people. I expect many patients may notice that the boar bristles on this toothbrush feel noticeably softer and more flexible than standard nylon. This can offer a gentler brushing experience for sensitive gums. I appreciate the boar bristles are woven directly into the head, avoiding the use of glue or adhesives that may become triggers of irritation. After reading the research, I feel good about this product as a comfortable, low-chemical option for everyday brushing.

Softer bristles Sensitive gums Less irritation