7 Reasons to Throw Away Your Toothbrush
7 Reasons to Throw Away Your Toothbrush Tonight.
The average toothbrush delivers 2.3 million microplastics into your body every year. Here's what that's doing to your arteries, your gut, your hormones — and your unborn children.
You've probably already started. Filtered water. Organic food. Glass containers instead of plastic. You know the drill — reduce your toxic load wherever you can.
But there's one source of microplastics so obvious, so daily, so intimate — that almost nobody is talking about it.
You put it inside your mouth. Twice a day. You press it directly against the most absorbent, vascularised tissue in your body.
You've been doing it your whole life.
And in 2025, scientists finally confirmed what that's been doing to you.
And before you reach for your bamboo brush thinking you're safe — we need to talk about that too. Because almost every bamboo toothbrush on the market still uses nylon bristles. The handle is bamboo. The part that goes in your mouth? Still plastic. Still shedding.
Here are 7 reasons — backed by the latest science — why you should throw your current toothbrush in the bin tonight.
Your bristles are shedding plastic directly into your gums — twice a day.
Every time you brush your teeth, the bristles bend, flex, and fragment. And with standard nylon bristles, those fragments don't just rinse away. They stick.
Your gums aren't passive tissue. They're one of the most vascularised surfaces in the human body — loaded with blood vessels sitting just beneath the surface. Particles that adhere to your gum line don't stay there. They enter circulation.
The oral cavity is almost entirely absent from mainstream microplastic conversation — which focuses on food packaging and water. But your toothbrush is the only microplastic source that makes direct, repeated, twice-daily contact with the inside of your body.
Scientists found plastic inside human arteries. The people who had it were 4.5× more likely to die.
This is the study that changed everything. Published in the most prestigious medical journal in the world. For the first time in history, researchers found microplastic and nanoplastic particles embedded directly inside human arterial plaque.
The oral cavity is one of the most direct, least-discussed routes by which microplastics enter the body and reach the bloodstream. Your toothbrush touches your gum line — which is directly connected to circulation — twice a day, every day.
The oral care industry's response to this landmark finding? Silence. Not a single major toothbrush brand changed a thing.
Your plastic bristles are literally feeding the bacteria that destroy your gums.
This is the finding that nobody in the dental industry wants to talk about. Because if it becomes widely understood, it demolishes the entire "brush more, brush better" narrative that has driven toothbrush sales for 80 years.
In other words: the very act of brushing with a plastic toothbrush may be contributing to the gum disease it's supposed to prevent. Not because you're brushing wrong. Because the material itself is leaving behind a substrate for the most destructive oral bacteria known to science.
Everything you're doing for your gut health is being undermined every morning.
The gut health movement has exploded. Probiotics. Fermented foods. Elimination diets. Fibre. Collagen. People are spending hundreds of dollars a month trying to heal their gut microbiome.
And twice a day — before breakfast and before bed — they pick up a nylon toothbrush and introduce microplastics directly into the oral-gut axis.
The oral-gut microbiome axis is now well established in the scientific literature. Your mouth and your gut are directly connected. Microplastics swallowed during toothbrushing don't pass through harmlessly. They actively disrupt the microbial ecosystem you're spending so much money trying to protect.
Microplastics have been found in placentas and unborn babies. Your toothbrush is a daily dose of endocrine disruptors.
This is the one that should stop you cold.
Nylon bristles don't just shed plastic particles. The nylon polymer itself contains processing additives — plasticisers, stabilisers, and coatings — many of which are classified as endocrine disruptors. These chemicals interfere with hormonal signalling. And they are being absorbed through your gum tissue twice a day.
The endocrine-disrupting chemicals associated with nylon and synthetic polymer exposure include phthalates and BPA — both of which are linked to:
Pregnancy: Associated with gestational diabetes, preterm birth, and low birth weight in epidemiological studies.
Child development: Linked to developmental delays, altered thyroid function, and neurobehavioural effects in offspring exposed in utero.
Hormone balance: Suppression of testosterone in men; oestrogen mimicry disrupting the female hormonal cycle.
If you are following a TTC (Trying to Conceive) protocol, your naturopath or integrative GP has almost certainly told you to eliminate endocrine disruptors. Your toothbrush — the one you use twice a day, directly on your gum line — is one of the most overlooked sources on that list.
Your bamboo toothbrush is still plastic. The handle is irrelevant. Only the bristles matter.
This is the most important thing to understand — and the most actively suppressed truth in the "eco" oral care market.
Walk into any health food store, natural pharmacy, or organic supermarket. The bamboo toothbrushes look clean. They look safe. The packaging talks about sustainability, biodegradability, and plastic-free living.
Almost every single one of them still has nylon bristles.
| Toxin 3 | Bamboo "Eco" Brush | Standard Plastic | |
|---|---|---|---|
| Bristle material | Natural hair | Nylon (plastic) | Nylon (plastic) |
| Microplastics shed | ✓ Zero | ✗ Yes — every brush | ✗ 2.3M / year |
| PFAS-free | ✓ Yes | ✗ No | ✗ No |
| TTC/fertility safe | ✓ Yes | ✗ No | ✗ No |
| Fully biodegradable | ✓ Yes | ✗ Bristles remain | ✗ No |
| Endocrine disruptors | ✓ None | ✗ Present in nylon | ✗ Present in nylon |
Some brushes market their bristles as "plant-based nylon" or "nylon 1010" derived from castor beans. This is still nylon. It is still a synthetic polymer. It still sheds microplastic particles. The word "plant-based" refers to the origin of the raw material — not what it becomes during manufacturing. What it becomes is plastic. And plastic sheds.
Global regulators have classified microplastics as a human health hazard. The oral care industry has done nothing.
This isn't fringe concern anymore. This isn't wellness influencers and naturopaths. The world's top health and environmental regulators have formally moved on microplastics.
EU Urban Wastewater Treatment Directive — January 2025. Extended regulatory framework explicitly addressing microplastic release from consumer oral care products.
UN Human Rights Council — July 11, 2024. Formal decision declaring that plastic pollution constitutes a threat to the full enjoyment of human rights. Rights-based litigation is now expected globally.
The regulatory and legal momentum around microplastics has accelerated dramatically in 2024–2025. These are not future projections. These are laws and formal decisions already in effect.
Colgate, Oral-B, Sensodyne — none of them have removed nylon from their bristles. None of them have responded to the NEJM cardiac study. None of them have responded to the gut dysbiosis research. Their products are identical today to what they were when these findings were published.
You've read the research.
Now throw away the brush.
Toxin 3 uses 100% natural boar or horse hair bristles — the only commercially available bristle that sheds zero synthetic polymers into your body. Same bamboo handle. Same clean. Zero plastic.
Get the Brush — $35 for 4-Pack5,000 years of bristle technology.
Zero petrochemicals.
Before the 1930s chemical revolution, people brushed with animal hair woven into handles. It worked then. The science confirms it's the only option that works without poisoning you now.
What people say after making the switch
"We spent two weeks overhauling our entire house after finding the microplastics research. Glass containers, organic cookware, water filters. Then I realised our toothbrush bristles were literally nylon plastic — shedding into our mouths twice a day while we were trying to conceive. Found Toxin 3. Switched immediately. This is not talked about enough in TTC communities."
"I've been obsessing over my gut microbiome for years. Probiotics, fermented foods, elimination diets. Then I found the 2025 study linking toothbrush microplastics to gut dysbiosis. The one thing I put in my mouth every single morning was quietly undoing everything. Switched to Toxin 3. Haven't looked back."
"My partner works in cardiology. When I sent him the New England Journal of Medicine microplastics study, he went quiet, then said 'we need to change our toothbrushes.' When your cardiologist spouse doesn't argue, you know the research is real. Both switched the same week."
"I thought my bamboo toothbrush was fine until I actually looked at the bristles. They're nylon. Literally nylon. I felt genuinely embarrassed that I hadn't realised. The bristle is the only part that matters — and mine was still plastic the whole time. Toxin 3 is the real deal."
You eat organic. You filter your water.
Now look at what's in your hand twice a day.
39 microplastic particles. Every brush. Directly into your gum tissue. Directly into your bloodstream. It's the simplest swap you haven't made yet.
Throw It Away — Shop Toxin 3