Why Do Mosquitoes Bite Some People More Than Others? New Research Reveals Key Factors

ISLAMABAD: Many people often complain that mosquitoes seem to target them more than others, even when they are surrounded by people who remain relatively unaffected. Scientists say this is not merely a coincidence but the result of several biological and environmental factors.

Recent research has revealed that body odor, carbon dioxide (CO₂) released through breathing, skin chemistry, body temperature, and even clothing color can influence how attractive a person is to mosquitoes.

According to experts, mosquitoes use a sophisticated biological system to locate their hosts. They first detect carbon dioxide emitted during breathing and then move closer, relying on body odor, heat, and chemical signals to identify their preferred target.

Researchers have found that mosquitoes can detect dozens of chemical compounds released by human skin. One such compound, known as 1-Octen-3-ol, is produced when natural skin oils break down and is particularly attractive to mosquitoes.

In the past, blood type was believed to be the primary reason some individuals attracted more mosquito bites, with people having blood group O often considered the most vulnerable. However, experts now say that a person’s natural body odor plays a much more significant role than blood type.

The unique mix of bacteria living on human skin creates a distinct chemical signature, and some of these scents are more appealing to mosquitoes than others.

The study also identified several groups that are more likely to attract mosquitoes, including pregnant women, people with larger body sizes, individuals who have recently exercised, those who sweat heavily, and people who naturally emit higher levels of carbon dioxide.

Experts further noted that mosquitoes are more attracted to dark-colored clothing, particularly black, dark blue, and red. Once mosquitoes detect carbon dioxide, these colors help them locate potential hosts more easily.

In contrast, white, light green, and other lighter shades are generally less attractive to mosquitoes.

Scientists emphasize that while mosquitoes are unlikely to disappear anytime soon, a better understanding of their behavior could help researchers develop more effective repellents and protective measures against mosquito-borne diseases.