Health
Are you a mosquito coil?It Could Be Your Smell, New Study Finds
A new study shows that some people are actually “mosquito magnets”, possibly related to their smell.
Researchers have found that the people who are most attractive to mosquitoes produce large amounts of certain chemicals in their skin that are linked to odors. Vampires stay true to their favorites over time.
Leslie Vosshall, author of the study and a neurobiologist at Rockefeller University in New York, said: “High levels of this substance on your skin can lead to stings when you go on a picnic. will be.”
There is a lot of folklore about who gets bitten more, but many claims are not backed up by strong evidence.
To test the magnetism of mosquitoes, researchers designed an experiment in which people’s scents were matched against each other, explained study author Maria Elena de Ovaldia. The findings were published Tuesday in the Cell journal.
They asked 64 volunteers at and near the university to wear nylon stockings on their forearms to pick up skin odors. The stockings were placed in separate traps at the end of long tubes, releasing dozens of mosquitoes.
“They basically flock to the subjects that appeal to them the most,” De Obaldia said. “It was immediately apparent.”
The scientists held a round-robin tournament that ended up with a big difference. The largest mosquito magnet attracted approximately 100 times more mosquitoes than the lowest one.
The experiment used Aedes aegypti, which carries diseases such as yellow fever, Zika, and dengue. Vosshall said he expects similar results with other strains, but more research is needed to confirm.
Matt DeGenaro, a neurogeneticist at Florida International University who was not involved in the study, showed that these large differences persisted by testing the same people over multiple years.
“Mosquito magnets seem to remain mosquito magnets,” DeGennaro said.
Among the favorites, researchers found a common factor: Mosquito magnets had high levels of certain acids in their skin. Healthy bacteria living on the skin eat up these acids and produce part of the skin’s odor profile.
You can’t remove these acids without compromising skin health, said Vosshall, who is paid by the Howard Hughes Medical Institute and is chief scientific officer. The Institute also supports the Health Sciences Division of The Associated Press.
But the research could help find new ways to repel mosquitoes, said Jeff Riffel, a neurobiologist at the University of Washington. He was not involved in the research. There may be a way to tinker with skin bacteria to change the tantalizing odor in humans, he said.
Still, finding ways to repel mosquitoes isn’t easy, says Riffell.
This study proved this point. The researchers also experimented with mosquitoes that had been genetically edited to impair their sense of smell. Bugs were still swarming the same mosquito coil.
“Mosquitoes are resilient,” Vosshall said. “They have a lot of back-up plans so they can find us and bite us.”
Copyright © 2022 by The Associated Press. All rights reserved.
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