In an increasingly polluted world, the presence of microplastics virtually everywhere (in our oceans and in our bodies) has become a common concern. Now, a discovery takes this unsettling reality to a whole new level: Microplastics have been found in our hearts. Literally.
The researchers identified nine different types of microplastics, with the largest measuring 469 μm in diameter, in a sample of 15 patients undergoing heart surgery. This discovery, published in the magazine Environmental Science & Technology (I link it to you here) raises urgent and profound questions about our health and our relationship with the environment around us.
Heart and microplastics: a worrying connection
We have always known about the entry of microplastics in the food chain through fish and other marine organisms. But the question many of us have been asking is: how far can these particles penetrate our bodies? The answer, as it turned out, is staggering. Not only are microplastics present in the food we eat, but they are in our bloodstream and they can also reach vital organs such as the heart.
According l 'American Chemical Society, researchers analyzed the heart tissues of 15 people before and after they had heart surgery. Using a laser-directed infrared chemical imaging system and scanning electron microscopy, the team found that microplastics were present in the tissue sampled. both before and after surgery.
Even more surprising was the variation in the type and diameter of microplastics in blood samples taken before and after surgery. This suggests that microplastics may have been introduced into the body even during the surgery itself.
Where are microplastics hiding?
As mentioned, nine types of particles were found in five types of tissues, with the largest measuring 469 μm in diameter. A quantity that causes concern, but which on balance seems to be almost a natural consequence of the enormous exposure to microplastics.
Every minute a truck full of plastic waste is dumped into the ocean. There are around 14 million tons of microplastics on the ocean floor. And these numbers are rising, despite global efforts to reduce plastic consumption.
Now what?
“Further research is needed to examine the impact of surgery on the introduction of microplastics, and the potential effects of microplastics on internal organs and human health,” the researchers point out in the study.
While we await more precise guidance, it is essential that each of us becomes aware of the impact our actions can have on the environment. Reducing the use of plastic, recycling correctly and supporting environmental initiatives are fundamental steps to ensure a healthier and more sustainable future for all of us.
