Study finds microplastics in every single human and canine testicle: ‘The plastic makes a difference’

Peer-reviewed research A paper published last week in the Official Journal of the Society of Toxicology showed that human and dog testicles are full of microplastics. This may help explain the sharp decline in male fertility rates worldwide.

full of microplastics

Nature Medicine
I got it. An editorial last month pointed out that “the world is full of more than 6 billion tons of plastic.”

“MNPs are present everywhere on Earth, including in the oceans, atmosphere, and food supply.”

Approximately 353 million tons of plastic waste was generated in 2019 alone. Nature Medicine points out that this is particularly bad news because plastics contain more than 10,000 chemicals, including endocrine disruptors and carcinogens, that can easily enter the human body. did.

Plastics enter the human body in the form of small particles called microplastics (less than 5 mm in diameter) and nanoplastics (less than 1 μm in diameter). Microplastics and nanoplastics (MNPs) can be produced intentionally, such as microbeads used in cosmetics and personal care products, or they can be produced in larger quantities, such as by washing synthetic clothing or tire wear. They can come from a variety of sources, including unintentionally as a result of deterioration of plastic products. MNPs are found everywhere on Earth, including the oceans, atmosphere, and food supply.

Blaze News previously detailed the findings of a June 2023 Australian study that suggested humans may be breathing in around 16.2 pieces of plastic per hour, which is more than the amount of plastic per week. That’s enough to make. These credit cards can be expensive.

According to the journal Science, studies in rodents have shown that microplastics have negative effects on various organs, including the reproductive and nervous systems, as well as the intestines, lungs, and liver.

As for its effects on humans, it has been found to contaminate various organs.
placenta and Breast milk — Researchers have identified links between microplastics and a variety of health conditions. cardiovascular disease and Inflammatory bowel disease.

It appears that scientists may have discovered yet another troubling connection.

devalue family treasures

Blaze News previously reported that since at least 1973, sperm counts in men on all continents have been on the decline.

Peer-reviewed research The paper, published in the journal Human Reproduction Update, confirms a trend that the same researchers detailed in a landmark meta-analysis several years ago. “This global decline has continued at an accelerated pace into the 21st century,” the researchers noted.

The study, led by Dr. Hagai Levin of the Hebrew University of Jerusalem and Dr. Shana Swan of the Icahn School of Medicine at Mount Sinai, found that this trend in the north was “driven by a 50-60% decline in men.” revealed. America, Europe, Australia, New Zealand.

After combining the results of more than 250 other studies and increasing the sample size to include men who were not yet concerned about their fertility, researchers found that between 1973 and 2018, only Western men It was determined that many men’s sperm counts had “significantly decreased.” 53 countries around the world.

Sperm count declines have been “drastic since 2000,” dropping by 1.4% per year and 62.3% overall.

The drop in sperm count is believed to be caused by a variety of factors, including chlormequat chloride, a pesticide found in oat-based foods. mobile phone radiation exposure; and Certain vaccines.

Microplastics are obviously another candidate.

plastic baggage

Researchers at the University of New Mexico recently studied 47 dog and 23 human testes. All testicles contain microplastics, the most prevalent being polyethylene, which is used to make plastic bags and bottles.

“I was surprised when I first received the dog results. I was even more surprised when I heard the human results.”

according to Researchers sent to the University of New Mexico chemically treated the testicle samples to dissolve fat and protein. Each sample was then spun in an “ultracentrifuge,” leaving a chunk of plastic at the bottom of the tube. They then heated the plastic pellets to 600 degrees Celsius in a metal cup. They used a mass spectrometer to analyze different types of gas emissions. Plastic burns at a certain temperature. ”

They found that the average concentration of microplastics in testicular tissue was 122.63 micrograms per gram in dogs and 328.44 micrograms per gram in humans.

“Initially, we had doubts whether microplastics could enter the reproductive system,” said Dr. Xiaozhong Yu, head of the research team. “I was surprised when I first received the dog results, and even more surprised when I received the human results.”

Matthew Kampen, one of the study authors, said:
Said According to NPR, the tiny particles are “shard-like, stinging fragments.”

Human testicles reported by the Guardian
report The specimens were taken from the bodies of men between the ages of 16 and 88 and chemically preserved to prevent sperm counts from being measured. However, the researchers were able to assess whether increased plastic contamination in the dogs’ testicles coincided with decreased sperm counts.

Researchers found that high levels of PVC, the second most common polymer in dogs, correlated with lower sperm counts.

“Plastics make a difference. What types of plastics may be correlated with potential functionality,” Yu said. “PVC can release large amounts of chemicals that interfere with spermatogenesis, including chemicals that cause endocrine disruption.”

Yu said the team specifically looked at dog testicles because “compared to rats and other animals, dogs are more similar to humans.” “We believe that dogs and humans have common environmental factors that contribute to testicular decline.”

“We don’t want to scare people,” Yu continued. “We want to provide scientific data and make people aware that microplastics exist in large quantities. You can make the choice to change your style and change your behavior.”

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