An estimated 4 percent of Americans have food allergies, and the Centers for Disease Control and Prevention has concluded that allergies are a growing public health concern. But diagnosing allergies can be tricky, and kids can outgrow them, too.

    Now, a new study sheds light on the effectiveness of a test called a food challenge to determine whether a person can tolerate a food they once reacted to.




posted by thenewgreen: 296 days ago