Mosquitoes can ruin a summer evening, and while some people are left alone, others get swarmed.
Around 20% of people are more attractive to mosquitoes due to factors like blood type, carbon dioxide output, body heat, sweat, skin bacteria, pregnancy, alcohol, diet, and clothing color.
Those with Type O or AB blood, for example, are more likely to be bitten.
Mosquitoes are drawn to carbon dioxide, making larger individuals or pregnant women—who exhale more CO₂—prime targets. Body heat and sweat, especially from exercise or hot weather, also attract them due to compounds like lactic acid. Skin bacteria can play a role, especially around feet and ankles.
Pregnant women are bitten more due to increased warmth and CO₂. Drinking alcohol, particularly beer, also raises the risk, though the reason is unclear. Foods high in sugar, salt, potassium, or spice, like bananas, can attract mosquitoes too. Lastly, mosquitoes prefer dark-colored clothing, especially black. While some factors can’t be changed, wearing light clothes, staying cool, and using repellent can help reduce bites.