March 2024. University of New Mexico.
Researchers analyzed 51 samples of human brain tissue. All contained microplastics.
Not some. All.
The most common type of plastic found? Nylon-6 and Nylon-12.
The same polymers used in… toothbrushes.
“Repeated oral exposure is one of the most efficient pathways for microplastics to enter the brain,” explained Dr. Matthew Campen, lead researcher.
“The oral mucosa is highly vascularized. Particles don’t need to be ingested — they’re absorbed directly.”
Think about it. You brush your teeth 730 times a year. If each brushing releases between 800 and 2,400 microparticles (and studies prove it does), you’re exposing your brain to plastic… 730 times a year. For decades.
And the damage? It accumulates.
→ Chronic neuroinflammation.
→ Early cognitive decline.
→ Increased risk of Alzheimer's and Parkinson's.
→ Severe hormonal dysregulation.
→ Compromised thyroid.
→ Resistant weight gain.
→ Male and female infertility.
→ Autoimmune diseases appearing out of nowhere
.
Children have levels 10 to 20 times higher than adults.
A study published in JAMA Pediatrics (2024) linked brain microplastics to ADHD, anxiety, and learning difficulties in children.
It's not theory. It's confirmed science.