Peer-Reviewed Research — PubMed

Microplastic Found Inside
Testosterone-Producing Cells

PubMed study: Chronic exposure to polystyrene microplastics induced male reproductive toxicity and decreased testosterone levels
Part. Fibre Toxicol. 2022 Feb 17  ·  PMID: 35177090  ·  Nanjing University View full study on PubMed →

We breathed them in this morning. We drank them with our coffee. We ate them for lunch.

They're in our blood, our organs, and our brains.

And most critically — they're in our testicles. Inside the cells that produce testosterone.

Not floating nearby. Inside the cells themselves.

Microplastics inside testosterone-producing Leydig cells
Here's what that means for men over 35
TestosteroneBlocked
Sex driveGone
Brain fogGetting worse
MusclesSlowly responding
EnergyDrained
MoodDestroyed
Sperm qualityDamaged
DriveDisappeared
Your bodyHijacked

You've blamed stress. You've blamed work. Sleep. Diet. Age.

The whole world has known testosterone is declining for 30 years. The supplement industry built a $5 billion business answering one question:

How do we get men more testosterone?

Nobody asked the more important question:

What is physically blocking the testosterone they're already making?

Until recent, nobody had the research to prove it. In hindsight it seems obvious.

Graph showing testosterone levels declining as microplastic concentration rises in men since 1980

Your testosterone production system is still there. Fully functional. Constantly trying.

Researchers at Nanjing University confirmed what nobody had said before: Microplastic particles don't just circulate near these cells. They attach to them. Enter them. And shut down testosterone production from inside.

The more plastic = the less testosterone.
The more years = the more plastic.

Four independent studies confirmed it.
Here's what they found.
100%
of human testicles tested contained microplastics Toxicological Sciences · University of New Mexico · 2024 · PMID: 38745431
2024 Toxicological Sciences PMID: 38745431 →
Microplastics detected in 100% of human testicles tested. Average concentration 329 µg/g — 3× higher than in dogs. In plain English: 23 men tested at the University of New Mexico. Plastic found in all of them — in higher concentrations than any other species tested.
2022 Particle & Fibre Toxicology PMID: 35177090 →
PS-MPs attached to and were internalized by Leydig cells. Testosterone output declined dose-dependently. In plain English: The cells that make your testosterone are absorbing the plastic. The more plastic inside, the less testosterone comes out.
2024 Environmental Pollution PMID: 39004204 →
Microplastics activate NF-κB signalling inside Leydig cells, directly suppressing testosterone synthesis at the molecular level. In plain English: Your body hasn't stopped making testosterone. Microplastics are blocking it — and this study found exactly how.
2024 eBioMedicine / The Lancet PMID: 39342804 →
Microplastics detected in 100% of human semen samples. Higher concentrations directly correlated with lower sperm quality. In plain English: Microplastic is in the sperm itself. And the more plastic, the worse the sperm quality. Published in The Lancet, one of the most respected medical journals in the world.
Formulated From The Research
Kleen Bio SYN-X7
Microplastic Clearance Formula

Your body has natural clearance pathways designed to remove foreign particles from cells. The problem: you're taking in more microplastics every week than those pathways can handle alone.

You guessed it. That's why we built Kleen Bio.

SYN-X7 was formulated to support those pathways — specifically targeting the microplastic accumulation inside the cells that produce your testosterone.

Testosterone booster Hormone hack Empty promises Clearance formula. Built for the actual problem.

What's Inside

SYN-X7 — extreme macro of pullulan capsule with activated charcoal and chlorophyllin powder
Activated Charcoal
500mg
The same binding agent hospitals use in poison treatment. Intercepts microplastic particles in your gut before they cross into your bloodstream — stopping the accumulation before it starts.
Chlorophyllin
300mg
Derived from chlorophyll. Binds to environmental contaminants at the cellular level and activates your body's own detox pathways — the ones responsible for clearing what's already built up inside.
Psyllium Husk
3g
Forms a thick gel that physically wraps around trapped particles and carries them out of your body. The faster the transit, the less time plastic has to be absorbed.
Zinc · Selenium
15mg · 100mcg
Reinforces the intestinal barrier that microplastics exploit to enter your bloodstream. Without this layer of protection, cleared particles can simply re-enter circulation.
What 30 Days Looks Like
Your first 30 days on SYN-X7
1
Week

The binding begins. Activated charcoal and chlorophyllin start intercepting microplastic particles in the gut — before they cross into your bloodstream.

2
Week

The gut barrier strengthens. Zinc and selenium begin reinforcing the intestinal lining microplastics exploit to enter your bloodstream. The re-absorption cycle starts to slow.

3
Week

Less plastic at the cellular level. With the clearance pathways now active, your Leydig cells are operating in a cleaner environment. The cells that produce testosterone are still there — and now they have less in the way.

4
Week

The system finds its rhythm. Reduced plastic load, a strengthened barrier, less cellular interference. Drive, mood, and output begin to reflect what your body was always capable of.

Two capsules.
Once a day. That's it.
30 day supply
Risk-free guarantee
Full results in 30 days
Natural Questions
I've tried supplements before. They didn't work.

You tried replenishment. This is removal. Not the same category. One fills a bucket. The other unplugs the drain.

How does a capsule remove plastic from cells?

It supports the biological clearance pathways your body already has — the same ones overwhelmed by decades of daily exposure. We give them what they need to work.

Why hasn't my doctor told me this?

The University of New Mexico study was published in 2024. The Nanjing mechanism research in 2022. Your doctor's textbooks predate this research by decades. The supplement industry moves even slower. We didn't wait.

Kleen Bio removes the plastic.
Your testosterone comes back.

Every week you don't address this, more accumulates. The man you remember being isn't gone. He's buried.