Type O Blood and Mosquito Attraction: What Science Says

People with type O blood attract more mosquitoes. Studies show they’re bitten twice as often. Higher skin levels of CO₂, lactic acid, and octenol likely explain this. The ABO antigens (absent in type O) may normally deter mosquitoes by binding antennae receptors or activating mosquito immunity.

Risk Reduction for Type O

• Wear long sleeves/pants outdoors.
• Use DEET or picaridin repellent.
• Stay indoors at dawn/dusk.
• Eliminate standing water.
• Use larvicides or mosquito traps.

These steps lower bite risk and mosquito-borne disease exposure.