When environmental engineering Erica Hartmann hit the gym, is seeing the land where people lie to make crunches as the ideal place to test dust for germs.
You & # 39; think dust is dead. But dust actually brings bacteria because they act as a place & # 39; final resting entirely to swim in the air.
F & # 39; gym, people & # 39; often encouraged to block weights and engines b & # 39; soddisfattur. One antimicrobial ingredient called triclosan stop growth & # 39; bacteria, fungus and mold and deodorised.
Manufacturers adding triclosan to & # 39; & # 39 variety; products, such as antibacterial soaps, textiles and knife handles.
"X & # 39; is happening in the bacteria with all antimicrobial chemical powder?" Hartmann asked.
In a new study, she and her team at Northwestern University in Illinois have discovered dust in gyms is not only alive, but showing signs of & # 39; resistance to antibiotics.
The first scientists took samples of & # 39; dust drawn by vacuum from gyms in & # 39; 42 athletic facilities in & # 39; Oregon, including private fitness clubs, centers of & # 39; public recreation and studios for dance, yoga and martial arts.
Hartmann and her colleagues were able to grow more than 7,000 colony & # 39; & # 39 different types; bacteria. "It was a little overwhelmed" as a result, she said.
At issue Tuesday of mSystems journal, Hartmann reported that about 30 percent of the bacteria were resistant to one of the three medically relevant antibiotic medicines.
About 100 years ago, infectious diseases were one of the main causes of death. Now, thanks to proper sanitation & # 39; water and antibiotic drugs, infectious disease is the list of the top killers in Canada.
Hartmann suspect we changed too much when it comes to hygiene. Is excessive, says, such as building & # 39; atomic bomb to go after bad germ.
The resistance against liver results when drugs kill some bacteria, but not all. Some bugs remaining evolve ways to protect themselves and thrive. When this happens, people can develop infections are much more difficult to deal with.
When scientists synthesize new compounds first, it was assumed that the chemicals are not active in the environment. Hartmann said that scientists are just beginning to appreciate the full consequences of chemical synthesis, such as may affect the microbial ecosystems.
When introduce synthetic chemicals like triclosan, saying, bacteria see source & # 39; prepared foods to exploit. "Bacteria are just trying to make a living."
The study shows that triclosan causes resistance to antibiotics. The researchers found genetic markers that indicate antibiotic resistance b & # 39; in general, not specifically resistance to triclosan. However, "the associations that we see are pretty suspicious," said Hartmann.
When triclosan is used in products for personal care, long leaves residue on & # 39; indoor dust. B & # 39; In general, residues at the gym are not a major threat, she said. "If you compare antibiotic resistance in & # 39; an environment in comparison with & # 39; the human gut, is most in the human gut."
If a patient in & # 39; industrialized country develops an infection resistant to antibiotics while in hospital, those infections are traced by governments and the World Health Organization. But acquired infections outside health care facility & # 39; often given statements, it is difficult to say what infections from where and x & # 39; it is the true cause, said Hartmann.
That is why the overall scale of the problem of antibiotic resistance traced to dust is unknown.
Soap and water recommended
But because of how antibiotic resistance is a huge threat to public health now, it has a suggestion for consumers' hands Soap antibiotic is not necessary. The regular soap and water are perfectly fine ".
Until 2017 in the United States, the manufacturers commonly triclosan added to antibacterial hand soap and & # 39; cleaning solutions. The Administration & # 39; Food and Drug & # 39; United States prohibited the company from selling antibacterial washes hands with & # 39; triclosan because the manufacturers have not shown that ingredients "are both safe to use & # 39; day long and more effective than simple soap and water to prevent illness and the spread of & # 39; certain infections ".
In 2012, Health Canada and Environment Canada reviewed triclosan and proposed that the industry voluntarily reduce the amount of use, particularly in products & # 39; personal care tend to be rinsed in & # 39; countries and rivers.
In the United States, triclosan is still found in & # 39; wajls people use the gym as well as in & # 39; toothpaste and many consumer products such as boards and cutting toys are not necessarily labeled as -Products are regulated by the Environmental Protection Agency, not the FDA.
Environment Canada considers triclosan is highly toxic to a variety of & # 39; aquatic organisms, such as algae and fish, as well as certain soil organisms.
"At current levels & # 39; exposure, triclosan not & # 39; harmful to human health," the Canadian government again & # 39; reiterated last month.
The federal government has proposed a plan & # 39; pollution prevention to limit the presence of & # 39; triclosan in Canadian channels. The proposal is open for public comment until 23 & # 39; in January, said a spokesman for Health Canada.
Fears & # 39; overly bacteria
Hartmann said that if triclosan affect ecosystems, eventually affecting human health. Usually, regulators evaluate substances b & # 39; acute toxicity, such as you & # 39; help before moving rat and dies.
Want to see that regulators pay more attention to potential chronic effects of & # 39; chemicals that can appear last few & # 39; years, particularly in the case of & # 39; microbial ecosystems influencing antibiotic resistance and eventually human health.
"My position has always been that [triclosan] m & # 39; is required in & # 39; home and m & # 39; We should use such potent chemicals they alleviate our fears of bacteria, "said Dr. Kapil Khatter, family physician at & # 39; Ottawa and before executive director of the Canadian Association of Physicians for the Environment.
He said that triclosan makes sense where sterility is essential, such as in & # 39; of & # 39; healthcare environments, but not for wider use & # 39; homes or gyms.
Researchers at the University & # 39; Oregon, Arizona State University, the Santa Fe Institute and Harvard have also worked on the study.
The research was partially supported by the Alfred P. Sloan Foundation, a philanthropic organization without purpose & # 39; profit established by the former head of & # 39; General Motors.