According to a report by the BBC on the 15th, the World Health Organization decided to assess the potential health risks of plastic particles in drinking water.
Only 17 bottles of water contain only 17 bottles without plastic particles
Previously, news organizations led a test. Test reports show the presence of plastic particles in bottled water from many famous brands, while "microplastics" are small particles that are small enough to be absorbed by the body. According to reports, the project selected more than 250 bottles of water from 11 brands in 9 countries for testing. It is the largest test in this type of research, and finally found that only 17 bottles of water do not contain plastic particles.
The study was conducted at the State University of New York, and the school's professor, Xie Li Mason, used a dye called "Nile Red" that was combined with free-floating plastics. The study found that only 17 bottles of water were found to contain no plastic particles in all tested bottled water. Many other bottles contained hundreds or even thousands of particles, even though the same package contained water within the same package. Huge difference. In addition, the study also showed that there are 10 plastic particles per liter of water, each of which is thicker than human hair. The smaller particles are 314 per liter of water. This part of the particles is currently initially judged to be plastic, but it has not yet been fully determined.
Most of the companies in these bottled water brands responded that the quality and safety of their products are adequately guaranteed. Other companies have also questioned that the results of the study are much higher than the results of the company's own research. In addition, some companies pointed out that there are no regulations on plastic particles and there is no uniform measurement method.
There is currently no evidence that plastic particles can cause harm to human health, but in response to the above findings, the World Health Organization has decided to evaluate this situation.
Will long-term drinking affect your health?
Bruce Gordon, WHO's Global Water and Sanitation Coordinator, said in an interview that the most important issue now is to figure out if long-term consumption of water containing plastic particles will have an impact on human health. Gordon said that given the composition of plastics, such as whether it contains toxins, to what extent it may contain harmful components, and how plastic particles may affect the human body, there is no ready-made research to provide answers.
Gordon said he realized that when people heard the presence of plastic particles in drinking water, they would turn to WHO for advice. "The public is obviously worried about whether drinking water containing plastic particles in the short or long term will affect their bodies. Health has an adverse effect." Gordon said: "We usually have a 'safety' standard, but to determine a safety standard, we must first understand whether these things are harmful and whether they appear in the water at high concentrations." Gordon said he did not want anyone to panic. However, he stressed that there is a greater threat of water supply in countries where supply may be contaminated by sewage.
Dr. Stephanie Wright of the King's College Environment and Health Center also said that the current priority is to understand how much plastic particles people are exposed to and how they will affect the human body. The British Food Standards Agency said that the amount of plastic particles in bottled water seems unlikely to cause harm, but added that it will evaluate all new information about plastic particles in food and beverages. Professor Mason, who uses the "Nile Red" dye for testing, also believes that the most pressing issue at present is to understand whether plastic particles are harmful. "At present, what we know is that some of the particles are large enough. Once they are ingested, they may Can be excreted, but in the process, it may release chemicals that affect human health. Some particles are very small, they can pass through the gastrointestinal tract, through the intestinal wall and then brought to the body, and We have not yet known what this means for the various organs and tissues of the human body."
Researchers have determined that tiny titanium dioxide can pass through the inner wall of the intestine, so plastics are also likely to pass through the inner wall of the intestine, which raises a new question: where these plastic particles will eventually go. Dr. Wright said that plastic particles may remain in the immune cells in the intestines, or they may enter the lymphatic system and eventually enter the lymph nodes. They are less likely to enter the bloodstream and may accumulate in the liver. Dr. Wright said: "These are external hard particles that the body wants to discharge, but because plastics cannot be degraded and difficult to discharge, they may cause damage to local tissues." Dr. Wright also admitted that he did not know what would happen. In addition to bottled water, it has been reported that previous surveys have found that tap water, beer, sea salt and fish contain plastic particles.
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