为什么蚊子总咬你的9个原因.

　　Mosquitoes are picky creatures — unsurprising if you’re the one always ducking for cover under a swarm of bloodsuckers while your friend remains unscathed. Good thing scientists are on the hunt to discover what makes certain people especially attractive to the tiny insects. Here are nine reasons they’ve come up with so far.

　　蚊子很挑剔 – 如果你是那个整天抱怨被很多蚊子叮咬的人，而你的朋友却相安无事，那么你对这种说法肯定不会感到奇怪。科学家正努力探索某类人特别吸引蚊虫的原因。下面是他们迄今为止发现的九个原因。

　　You Breathe

　　你“吹气如兰”

　　In many ways, no one is immune. The fact that humans breathe makes us all mosquito targets to varying degrees. More than 30 years ago, researchers discovered that carbon dioxide is one of the main reasons mosquitos seek us out. The insects will fly to higher concentrations of CO2 (i.e. - large groups of people at sporting events and backyard parties), then use other sights and smells to narrow down their target.

　　大多数情况下无人幸免于蚊虫叮咬。事实上，人类的呼吸使得我们纷纷成为蚊子的目标，但是程度又因人而异。30多年前，研究者发现二氧化碳是蚊子对我们情有独钟的主要原因之一。这种生物会飞到二氧化碳浓度较高的地方(例如 – 在体育赛事和后花园聚会这种人群密集的地方)，然后利用它们的眼睛和鼻子缩小攻击目标。

　　You’re Tall

　　你体格偏大

　　Because larger people produce more carbon dioxide and more body heat, they’re naturally more attractive to mosquitoes. This is why, when in groups, adults usually get bitten more than children, and men are targeted more often than women.

　　因为体型较大的人会产生较多的二氧化碳和体热，这些本身就更吸引蚊子。这也就是为什么在一群人中，成人比小孩被蚊子叮咬的多，并且男人比女人被叮咬的多。

　　You’re Pregnant

　　你身怀六甲

　　Along with swollen feet and morning sickness, pregnant women are also nearly twice likely to get bitten than those who are not expecting, according to one international study. Two reasons: Pregnant women produce excess amounts of carbon dioxide and body heat.

　　孕妇不仅双脚肿胀，晨间呕吐，根据一项国际研究，她们被蚊虫叮咬的几率是普通人的两倍。两个原因：孕妇呼出更多二氧化碳，产生更多体热。

　　You Exercise Regularly

　　你是运动达人

　　During a workout, the body produces a chemical called lactic acid, which is released through sweat glands on the skin. And one German study confirmed that mosquitoes can detect and are attracted to lactic acid at close range.

　　在锻炼中，身体会产生乳酸，这种化学物通过皮肤上的汗腺分泌出来。一项德国的研究证实在较近范围内，蚊子可以探测出这种乳酸，并被其吸引。

　　Your Feet Stink

　　你的脚臭气熏天

　　One study published in the journal PLOS ONE found that people with a higher abundance but lower diversity of bacteria on their feet are highly attractive to mosquitoes. The bacteria, which is pungent, is also found in Limburger cheese and is so fective at attracting mosquitoes, that scientists are using the cheese to trap and control the flies in Africa.

　　发表在PLOS ONE(美国著名生物学期刊)的一篇研究发现脚上细菌较多且细菌种类单一的人更加吸引蚊虫。这种有刺鼻味道的细菌，林堡干酪中也有，它们可以非常有效的吸引蚊子，所以非洲的科学家利用这种干酪捕获并控制苍蝇。

　　You’re Wearing Perfume

　　你喷了香水

　　Mosquitoes suck the nectar of flowers for energy, so they’re attracted to floral scents. And certain floral odors are fective enough that researchers are figuring out how to use them to lure mosquitoes with their sweetness.

　　蚊子会喝花蜜补充能量，所以他们会被花香吸引。某些花香可以非常有效地吸引蚊虫，所以研究者正在想办法利用这些花的甜味吸引蚊子。

　　You’re Genetically Predisposed

　　某些遗传因素

　　Your genes are responsible for your body odor, so scientists are starting to test how genetic makeup could affect one’s susceptibility to mosquitoes. For example, one study published in the journal Infections, Genetics, and Evolution found that people with a particular HLA gene are more likely to be bitten.

　　你的基因决定你的体味，因此科学家开始检测基因如何影响蚊虫对你的敏感度。例如，一项发表在《感染、基因和进化》杂志上的研究发现具有HLA基因的人更容易被蚊虫叮咬。

　　You Drink Beer

　　你喝啤酒

　　Downing just one 12-ounce beer can increase the risk of being bitten, says the Journal of the American Mosquito Association, although it’s unclear why. Just make sure that backyard beer is worth it.

　　仅仅喝12盎司的啤酒就会增加被叮咬的概率，美国蚊虫协会的杂志如是说，尽管原因不明。你千万要衡量一下在后院喝啤酒是否值得让你冒这个险。

　　You Have O Blood Type

　　你是O型血

　　This one is debatable. Several studies, including the most recent published in the journal Experimental Parasitology, show that people with blood type O are more likely to get bitten. However Joseph M. Conlon, a technical adviser to the American Mosquito Control Association, has disputed some of the research, blaming “bad statistics.”

　　这个原因颇具争议。某些研究，包括最近刚在《实验寄生虫学》杂志上发表的研究表示O型血的人更易被叮。然而，美国蚊虫控制协会的技术顾问，约瑟夫·M·康仑对这个研究提出异议，谴责说这是“错误的统计数据”。