O型血更“招蚊子”是真的吗？

O型血更“招蚊子”是真的吗？_OK阅读网


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O型血更“招蚊子”是真的吗？

来源：中国日报 2024-08-21 16:07

Do mosquitoes prefer a certain blood type? Maybe—but it’s not just one factor that influences why these winged pests are attracted to us and researchers can’t seem to agree on a definitive answer.

There are two kinds of people in the world: those who return from time in the outdoors covered in itchy mosquito bites and those who can spend hours in the same space and avoid getting bitten at all. Let's face it, mosquitoes are not equal opportunity feasters.

So, what exactly makes some people more attractive to mosquitoes than others?

Science reveals that a variety of factors might make you more palatable to mosquitoes, from your skin microbiota and carbon dioxide emitted in your breath to the color of clothing you're wearing (with colors like red, orange, and black being the most attractive to mosquitoes). But in the end, much of the variation in mosquito preference comes down to two factors: our natural body odor and genetics.

Only the females bite humans and they do it to get a “blood meal,” deriving proteins from our blood to produce their eggs. To help locate their prey, female mosquitoes use their antennae and palps, the organs between their antennae, to detect carbon dioxide and odor. That means people who have a high metabolic rate and emit more carbon dioxide, including those who are pregnant, working out, or drinking alcohol tend to be more attractive to mosquitoes.

The question of whether mosquitos prefer a certain blood type is controversial. One theory suggests that blood type may also help determine mosquito preference. If that’s the case, what blood type do mosquitos like? A 2019 study found that the major mosquito vector of dengue virus preferred people with type O blood to those with other blood types.

However, separate research notes that experimental and laboratory data evaluating whether blood type makes one person more (or less) attractive to mosquitoes has fueled a lot of speculation, but the science is contradictory. Instead, the researchers report that the likelihood of being a “mosquito magnet” has more to do with skin odors and microbiota than blood type.

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