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Why Do Mosquitos Bite You?

Mosquito repellent. Woman spraying insect repellent on skin

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For some people, mosquitos are the bane of their existence during the warm summer months, while for others, they are largely a non-issue. Indeed, most people realize early in life that these pesky insects seem to gravitate toward some individuals a lot more than others. But why is that? Why are some people natural mosquito magnets while others are spared? Is it because of genetics, diet, or the smell of our skin? Let’s get to the bottom of this mystery and explain why mosquitos might take such a liking to you— and what you can do about it.

 

1. The role of blood type

Many people are unaware that their blood type may be a factor in whether mosquitos view them as an enticing target or not. It is likely that fewer still even know what their blood type is in the first place. It is worth asking your doctor to find out, because depending on what the answer is, it may confirm how attracted these annoying insects are to you.

Studies have shown that people with type O blood are bitten the most by mosquitos. Individuals with type A blood where bitten the least, and type B fell somewhere in between.

What is also interesting is that 85 percent of people’s bodies actually produce a secretion on their skin that can be used to identify their blood type. This is most likely how mosquitos identify their targets.

 

RELATED: This One Natural Oil Is Just As Effective At Repelling Mosquitoes As DEET

 

2. Sweat and microorganisms

Research has shown that hot, sweaty skin is more attractive to mosquitos than drier skin. Perspiration obviously gives off an odor, which mosquitos can zero in on and use to select their next meal. Compounds in sweat like lactic acid, ammonia, and more seem to be the culprits here.

In addition to sweat, the number of microorganisms living on your skin is also a factor. Everyone has tiny organisms living on their skin which are invisible to the naked eye. This is normal and natural. A study found that mosquitos were more attracted to people with more bacteria on their skin due to the subtle scent they produce. This might explain why mosquitoes frequently bite people on their bare feet and ankles since these regions are frequently covered with shoes and socks and have more bacteria than other parts of the anatomy. One interesting difference among the participants was that those who were most attractive to mosquitoes had larger concentrations of bacteria, but fewer varieties on their skin.

 

3. The color of your clothes

Believe it or not, the color of your shirt might be a significant factor in how likely you are to be feasted upon by mosquitoes. We have already established that mosquitoes use their sense of smell to select their targets. But these insects also have very keen eyesight, and certain colors attract their attention a lot more than others. According to Johnathan Day, a professor of Medical Entomology at the University of Florida, wearing bold colors that contrast with natural surroundings (red, dark blue, black, etc.) will attract more attention from mosquitoes. Does this mean you have to go around wearing camo clothing all summer long? Probably not, but it is just something to be aware of if you are prone to being bitten.

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