Health

Microplastics on human health remain unclear

December, 31, 2024-03:05

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Microplastics on human health remain unclear:

Researchers proceeded to stain the microplastics prior to exposing them to various types of human intestinal cells.

Their findings revealed that mucus-producing intestinal cells exhibited the highest levels of plastic uptake, with some particles even penetrating the cell nucleus. Humans can encounter plastic particles through the consumption of food, drinking water, and inhalation of air. Nevertheless, the extent of human exposure, the concentrations that lead to chronic toxic effects, and the mechanisms by which microplastics exert their influence remain insufficiently understood, hindering a comprehensive risk assessment for human health. There is growing concern among researchers regarding the ability of these particles to be absorbed by cells, potentially disrupting cellular functions, especially in children’s organs, which may lead to significant changes in adulthood.

An increasing amount of evidence suggests that plastics may contribute to the early development of cancer, where healthy cells transform into cancerous ones. A study conducted earlier this year indicated that cancer cells in the gut proliferated more rapidly after exposure to microplastics. Experts have also expressed concerns about the potential impact of microplastics on reproductive health.

In June, scientists reported finding minute plastic particles in the sperm of men. These microplastics, identified as black dots, were present in the semen samples of all 36 participants in a Chinese study. The specific type of plastic detected was that used in plumbing pipes, and tests indicated that sperm exposed to this plastic exhibited reduced mobility, impairing their ability to fertilize eggs. The Chinese research team proposed a possible connection between microplastics and the observed global decline in fertility rates.

Maria Westeros, co-founder of the Plastic Health Council, stated, "Scientists are consistently uncovering the harmful effects of plastics on human health. There is no longer any doubt." She emphasized that the international community is approaching the final negotiations for the Global Plastics Treaty, yet policymakers are not taking adequate action.