Mosquitoes seem to prefer certain people over others, leaving some individuals unscathed while others are bombarded with bites during warm months. Research has revealed that a combination of factors influences this selection process, including blood type, body odor, metabolism, and genetics.
According to scientists, up to 85% of our susceptibility to mosquito bites is genetically determined, explaining why the tendency to attract mosquitoes can run in families. One key factor is blood type, with individuals having Type O blood being significantly more likely to receive bites compared to those with types A or B.
Body odor also plays a crucial role in mosquito attraction. Mosquitoes possess sensitive olfactory receptors that can detect carboxylic acids produced by bacteria naturally living on human skin. Studies have shown that people with less diverse skin bacteria tend to be more prone to bites, as less diverse bacterial ecosystems may produce more concentrated compounds that are irresistible to mosquitoes.
Physical activity and metabolic factors also contribute to mosquito attraction. Exercise increases CO2 production and lactic acid generation in muscles, both of which are powerful attractants for mosquitoes. Additionally, pregnant women and those who consume alcohol can become attractive targets due to increased CO2 production and body temperature.
Genetics also plays a determining role in our predisposition to bites, with dark-colored clothing being more visible to mosquitoes. The tendency to attract mosquitoes often runs in families, highlighting the importance of genetic factors in this phenomenon.
By understanding these factors, we can take effective preventive measures against mosquitoes and reduce our susceptibility to bites.
Source: https://www.majorcadailybulletin.com/news/did-you-know/2025/07/20/134933/mosquitoes-why-some-people-get-bitten-more-than-others-mallorca.html