Do they mean by plastic tableware chopsticks? Well, I suppose many millions of Chinese adults and children have used plastic chopsticks eating out of plastic bowls for decades. If it was so bad, then the Chinese population should be significantly reduced due to this.
Alert: Plastophobia is a serious disorder. Please seek immediate medical help! (Caution: satire)
This study is limited to only 200 men visiting the same sperm bank in China.
"Men who use plastic tableware have a higher accumulation of microplastics in their semen and lower sperm counts, finds a study published in the Journal of Nanobiotechnology that studied samples from ~200 men of reproductive age in Chongqing, China."
"... This study included 200 men of reproductive age who visited the Chongqing Human Sperm Bank between May 2020 and December 2021. ..."
From the abstract:
"Microplastics (MPs), as emerging contaminants [???], may adversely affect male reproductive health. This study investigated the potential association between MP accumulation in human semen and sperm quality. Furthermore, the molecular mechanisms underlying MPs-induced sperm quality impairment were characterized using representative polystyrene microplastics (PS-MPs), murine models, and spermatogonial cell cultures.
Among 200 semen samples, the overall detection rate of MPs was 55.5% (111/200). A total of 128 MPs were identified in semen, with PS (32.03%) and PVC (36.72%) being the predominant microplastic polymers. Epidemiological analyses revealed a significant positive association between plastic tableware (PT) use frequency and MP accumulation in semen. Stratified analyses further revealed a strong association between total MPs exposure and reduced sperm concentration among individuals with BMI < 24 kg/m² and frequent PT use. In murine models, exposure to PS-MPs induced reduced sperm quality, elevated sperm abnormalities, and increased levels of autophagy and apoptosis. Mechanistically, PS-MPs activated the MAP3K1/p38/c-fos pathway via the transcription factor FOXA1, thereby inducing the autophagy and apoptosis of spermatogonia. Collectively, this study provides direct human evidence that MP accumulation in semen is associated with impaired sperm quality, particularly in individuals with certain lifestyle factors such as frequent PT use. Moreover, our findings further demonstrate the potential reproductive toxicity of MPs and, for the first time, elucidate the critical role of the FOXA1/MAP3K1/p38 cascade in PS-MPs-mediated decline in sperm quality."
Graphical abstract
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