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Toxic spiders have a terrible reputation. Yet even though deadly spider bites are regular fodder for scary stories, spider experts say it's actually quite rare for anyone to suffer serious injuries from the world's deadliest spiders.
There are more than 40,000 species of spiders, almost all of them venomous, but only a few are known to produce venom that is toxic to humans.
Thanks to antivenin and good medical care, deaths from spider bites have steeply declined since the 1950s, according to records kept by national poison control centers. Changes in how people live have helped, too. For example, in the United States, the switch to indoor plumbing sharply cut black widow bites. That's because men using outhouses were often bitten on the penis or scrotum, where the thin skin and abundant blood vessels meant venom quickly entered the body, a doctor reported in 1942 in the Annals of Surgery . Read more...
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