Microplastics in testicles may play a role in male infertility, study suggests

Infertility, influenced by various factors including environmental ones, remains a global concern, particularly regarding male fertility. Recent research highlights the presence of microplastics in both dog and human testes, indicating potential impacts on sperm count and testis weight.

The study, published in Toxicological Sciences, examined 12 microplastic types in testis samples from dogs and humans. It found higher microplastic levels in men compared to dogs. Polyethylene (PE) and polyvinyl chloride (PVC) were the most common polymers found, commonly used in various applications.

While certain microplastic types were associated with decreased sperm count and testis weight, the link wasn't statistically significant for all. Notably, PVC showed a negative association with testis weight.

Further research is needed to understand microplastics' full impact on fertility, considering the limitations of the study. However, this underscores the necessity for dose-response studies and mechanistic investigations to clarify the role of microplastics in male infertility.