Our allergies, ourselves
Are we allergic because of pollution? Because we wash our hands too much? There's a surprising lack of consensus as to why allergies are on the rise, but some scientists suggest we have only ourselves to blame.
ONE HUNDRED YEARS AGO, an Austrian doctor named Clemens von Pirquet coined the term "allergy" to describe how the human body, once exposed to a foreign substance, could inexplicably develop a heightened, occasionally fatal, sensitivity to it. (Full article: 1831 words)
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