Anyone who has ever been subjected to an allergy skin prick test can verify that it is not a pleasant procedure, particularly if you happen to be allergic to several different substances.
allergens
The latest health news: a shoutout to Hank Campbell on his natural gas op-ed, why germy kids are healthy kids, and why getting them to eat veggies because it's healthy won't work
The hygiene hypothesis states that lack of exposure to germs and other immunogenic substances at a youn
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