Allergies

A few years ago, while casting out to twitter asking for immunology-themed post ideas, Christie Wilcox mentioned that a friend of hers seemed to have an allergic reaction after having sex.

Two of the most monumental developments in the history of human civilization, likely the innovations that have saved more human lives than any other, are soap and sanitation.

In a fierce battle for dominance, Asian needle ants are displacing other species and threatening U.S. ecosystems

Gluten-free products made with refined grains can be low in fiber, vitamins and minerals

Longer pollen season and wider ragweed exposure will affect more people

Beauty products are largely unregulated, according to this special report

A warming climate makes for a brutal allergy season in the U.S., which may become even worse in future

A new hypothesis argues that allergies emerged to protect us from harmful environmental substances

Besides infection from unsterile needles, exposure to mercury and other heavy metals is a risk to consider when getting a tattoo

A new drug contaminant is causing frightening outbreaks of blackened skin and low white blood cell counts

U.S. Institute of Medicine finds "very little evidence" of serious harm