Microplastics in Testicles: How Plastic Pollution is Affecting Male Fertility

Recent research conducted by the University of New Mexico has uncovered the presence of microplastics in testicular tissue from both dogs and humans. This alarming discovery adds testicles to the growing list of places where microplastics have been found, which includes human placentas, ancient rocks, clogged arteries, blue whales, baby poop, the wilderness of Antarctica, near the peak of Mount Everest, and the depths of the ocean.

The study revealed that microplastics were present in every testicular tissue sample collected, with human samples containing nearly three times more microplastics than those from dogs. On average, there were 122.63 micrograms of microplastics per gram of tissue in canines and 329.44 micrograms per gram in humans. The most common type of microplastic identified in both species was polyethylene (PE), a polymer used in the production of plastic bags and bottles.

The presence of microplastics in testicular tissue has raised concerns about their potential effects on male fertility. While the study did not directly assess sperm count in human samples, canine samples showed a correlation between higher levels of polyvinyl chloride (PVC) plastic and lower sperm count. PVC, which is widely used in various products, contains chemicals that can disrupt endocrine function and interfere with spermatogenesis.

The biological similarities between humans and dogs make them suitable subjects for comparison in studies like this. The researchers highlight the need to address the potential long-term effects of microplastics on the human body, as previous research has linked them to inflammatory responses and digestive issues. The pervasive nature of synthetic, non-biodegradable materials like plastic raises concerns about their impact on both human health and the environment.

As the prevalence of microplastics continues to grow, the question remains whether it is too late to mitigate their effects. The researchers emphasize the importance of raising awareness about the risks associated with microplastic exposure, without causing unnecessary alarm. By providing scientific data on the presence of microplastics in testicular tissue, the study aims to shed light on the urgent need to address plastic pollution and its potential consequences for male fertility.