Here’s the latest on why mosquitoes seem to love certain people more than others.
What makes you more attractive to mosquitoes: Research shows that odor-related factors, especially higher levels of certain skin compounds like carboxylic acids, can make some people more attractive to female Aedes aegypti mosquitoes. This trait tends to be relatively stable over time for individuals, meaning your “mosquito magnet” status can persist. Citation: Scientific American article summarizing the Cell study on skin odor and carboxylic acids.[3]
Genetics and skin microbiome play a role: Studies on twins and skin bacteria indicate that both genetics and the bacteria living on your skin influence your body odor, which in turn affects mosquito attraction. Identical twins tend to have similar levels of attractiveness to mosquitoes, suggesting a genetic component. Citation: NPR report on Vosshall’s research and twin study.[4]
Other contributing factors: In addition to skin chemistry, factors like carbon dioxide exhaled, body heat, and even clothing color (darker colors may be more attractive to some species) have been discussed in broader syntheses of the research. These factors can interact with your baseline odor to influence bite risk in outdoor settings. Citations: Pfizer explainer on body odor and genetics; general summaries noting CO2, heat, and clothing considerations.[2][7]
Practical tips to reduce bites (quick-start):
Illustrative takeaway: If you’re a “mosquito magnet,” it’s largely due to your natural skin chemistry and genetics, which set the baseline for how mosquitoes respond to your scent. You can modestly reduce bites with repellents and protective clothing, but the underlying attraction isn’t something you can entirely change quickly. For more in-depth reading, see coverage of the Cell study and subsequent reporting from NPR and Scientific American. Citations: Cell study summary via Scientific American, NPR interview with Vosshall.[2][3][4]
If you’d like, I can pull a few region-specific tips for Marseille or recommend a week-by-week topical repellents plan tailored to your outdoor activities.
Why do mosquitos bite some people more than others? NPR's Scott Simon talks with researcher Leslie Vosshall, who looked into this phenomenon and has some answers.
www.npr.orgCertain compounds in our skin determine how much we attract mosquitoes, new research suggests—and those compounds don't change much over time
www.scientificamerican.comIf you are a mosquito magnet, there is not much you can do. "Mosquito magnets seem to remain mosquito magnets," says DeGennaro, a neurogeneticist at Florida International University.
www.ndtv.comScience reveals that a variety of factors might make you more palatable to mosquitoes, from your skin microbiota and carbon dioxide emitted in your breath to the color of clothing you're wearing (with colors like red, orange, and black being the most attractive to mosquitoes). But in the end, much of the variation in mosquito preference comes down to two factors: our natural body odor and genetics.
www.pfizer.com(CNN News) Here's why mosquitoes are attracted to some people more than others CNN. Associated research findings from the National Library of Medicine.
www.ncbi.nlm.nih.govMosquito bites aren't just annoying.
www.foxnews.com