Researchers detected significant microplastics in human and dog testes, with potential links to reduced sperm count. The findings highlight the need for more research on the impact of microplastics on reproductive health and encourage lifestyle changes to minimize exposure.
Researchers reported finding 12 types of microplastics in 47 canine and 23 human testes in a new paper published in the journal. The research team was led by Xiaozhong “John” Yu, MD, PhD, MPH, a professor in the UNM College of Nursing.“Our study revealed the presence of microplastics in all human and canine testes,” Yu said.
The team chemically treated the samples to dissolve the fat and proteins and spun each sample in an ultracentrifuge, leaving a nugget of plastic at the bottom of a tube. Then, heated the plastic pellet in a metal cup to 600 degrees. They used a mass spectrometer to analyze gas emissions as different types of plastic burned at specific temperatures.
The team was able to count the sperm in the canine samples and found that higher levels of PVC in the tissue correlated with a lower sperm count, Yu said. There was no correlation with tissue concentration of PE, however.
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