Mosquito Bites: Why Some People Are More Attractive to Mosquitoes Than Others

by Peter April 17, 2026

written by Peter April 17, 2026

Why Mosquitoes Bite Some People More Than Others

Blood Type

Mosquitoes are attracted to certain blood types more than others. In a study, mosquitoes landed on people with Type O blood nearly twice as often as those with Type A. People with Type B blood fell somewhere in the middle. Additionally, about 85% of people secrete a chemical signal through their skin that indicates their blood type, and mosquitoes are more attracted to secretors than nonsecretors regardless of blood type.

Carbon Dioxide

Mosquitoes use their maxillary palp to detect carbon dioxide emitted in breath, and they can detect it from as far as 164 feet away. As a result, people who exhale more carbon dioxide, such as larger people, attract more mosquitoes. This is one reason why children get bit less often than adults.

Exercise and Metabolism

Strenuous exercise increases the buildup of lactic acid and heat in your body, making you more attractive to mosquitoes. Additionally, genetic factors influence the amount of uric acid and other substances naturally emitted by each person, making some people more easily found by mosquitoes than others.

Skin Bacteria

The types and volume of bacteria that live on human skin affect our attractiveness to mosquitoes. Having large amounts of certain types of bacteria makes skin more appealing to mosquitoes, while having a greater diversity of bacteria species makes skin less attractive. This may be why mosquitoes are especially prone to biting ankles and feet, which have more robust bacteria colonies.

Beer

Drinking just one 12-ounce bottle of beer can make you more attractive to mosquitoes. However, researchers have not yet determined why. Neither the increased ethanol excreted in sweat nor the increased body temperature associated with drinking beer correlate with mosquito landings.

Pregnancy

Pregnant women attract roughly twice as many mosquito bites as others. This is likely due to the combination of exhaling about 21% more carbon dioxide and being on average about 1.26 degrees Fahrenheit warmer than others.

Clothing Color

Mosquitoes use vision, along with scent, to locate humans. Wearing colors that stand out, such as black, dark blue, or red, may make you easier to find.

Genetics

Underlying genetic factors are estimated to account for 85% of the variability between people in their attractiveness to mosquitoes. These factors can be expressed through blood type, metabolism, or other factors. Unfortunately, there is no way to modify these genes yet.

Natural Repellants

Some people rarely attract mosquitoes, and researchers are studying the reasons why in the hopes of creating the next generation of insect repellants. Scientists have found that these natural repellers tend to excrete substances that mosquitoes find unappealing. Incorporating these molecules into advanced bug spray could make it possible for anyone to ward off mosquitoes effectively.

Peter

Peter is a marketer with a background in business and a passion for writing. With a keen eye for detail and a talent for crafting compelling narratives, Peter has carved out a niche for himself as a versatile contributor to LifeScienceArt.com, where he enjoys sharing his insights and expertise across a wide array of topics. Peter's journey into the world of marketing began with his university education in business. He earned his Bachelor's degree in Business Administration. His academic pursuits were characterized by a deep understanding of market dynamics, consumer behavior, and strategic planning. This foundation laid the groundwork for his successful career in marketing, where he has applied his knowledge to help businesses grow and thrive in competitive landscapes. Throughout his career, Peter has worked with a diverse range of companies, from startups to large multinational conglomerates, helping them develop and execute effective marketing strategies. His experience spans various industries, including technology, healthcare, and consumer goods, reflecting his adaptability and broad skill set. Peter's ability to blend analytical thinking with creative problem-solving has made him a valuable asset in any organization he works with. Despite his busy professional life, Peter has always made time for his true passion: writing. He finds joy in the written word and believes in its power to inform, inspire, and connect people. This passion has found a perfect outlet in LifeScienceArt.com, where he contributes to all sections of the site. Whether it's penning thought-provoking articles on the latest trends in life sciences, crafting engaging profiles of industry leaders, or writing insightful pieces on art and its intersection with science, Peter brings a unique voice and perspective to his work. One of the aspects Peter cherishes most about his role at LifeScienceArt.com is the opportunity to collaborate with a wonderful cohort of writers. He values the camaraderie and the shared commitment to excellence that characterize the team. Working alongside talented and passionate individuals inspires him to continually hone his craft and push the boundaries of his writing. Outside of his professional pursuits, Peter is an avid reader and a lifelong learner. He enjoys exploring new ideas, delving into diverse genres of literature, and staying abreast of developments in science and art. His curiosity and enthusiasm for learning are reflected in his writing, where he strives to bring fresh insights and a nuanced understanding to his readers. Peter's story is one of dedication, versatility, and a deep-seated love for both marketing and writing. His contributions to LifeScienceArt.com not only enrich the site's content but also underscore the importance of passion and collaboration in creating meaningful and impactful work.