Why Are Mosquitoes Attracted to Certain People?
- Related Topics:
- mosquito
- insect bite and sting
- sweat
Mosquitoes that feed on human blood are attracted to certain people more than others due to a combination of factors related to body chemistry, metabolism, and environmental cues. A key factor is the chemical composition of an individual’s sweat. The lactic acid in sweat is particularly attractive to mosquitoes, which have specialized receptors on their antennae for this and other chemical cues. Carbon dioxide output also plays a major role. The insects are highly sensitive to carbon dioxide, and individuals who exhale more—such as those who are larger or more physically active—are more likely to be targeted. Additionally, mosquitoes are attracted to body heat and movement. Higher body temperatures and physical activity can make individuals easier to detect and more appealing as hosts.