Why Do Mosquitoes Bite Some People More Than Others?

Have you ever noticed that mosquitoes seem to target certain people while leaving others alone? If so, you’re not imagining it. Research suggests that mosquitoes are attracted to some individuals more than others due to a combination of biological and environmental factors.
One of the main reasons is body odor. Humans naturally produce different scents through their skin, and mosquitoes can detect certain chemical compounds that they find attractive. Genetics may play a role in determining these scents, which means some people naturally attract more mosquito bites than others.
Body heat and carbon dioxide also influence mosquito behavior. Mosquitoes use carbon dioxide as a way to locate potential hosts, so people who exhale more carbon dioxide may attract more mosquitoes. This includes adults, pregnant women, and individuals engaging in physical activity. Higher body temperatures can also make a person easier for mosquitoes to find.
Another factor is sweat. During exercise or hot weather, the body releases substances such as lactic acid and ammonia through sweat. These compounds may increase a person’s attractiveness to mosquitoes.
Although mosquito bites are usually harmless, they can cause itching, irritation, and, in some regions, increase the risk of mosquito-borne diseases. To reduce the chance of being bitten, it is recommended to use insect repellent, wear long-sleeved clothing when possible, eliminate standing water around living areas, and stay in well-screened or air-conditioned environments.
While it may seem unfair that mosquitoes prefer some people over others, understanding the factors that attract them can help individuals take practical steps to protect themselves from bites and related health risks.