The first treatment to help prevent serious allergic reactions to peanuts may be on the way. A company said Tuesday that its daily capsules of peanut flour helped sensitize children to nuts in a major study.

A new study suggests many peanut allergies can be prevented. Researchers say their findings could lead to major changes in food allergy guidelines.

Peanut allergies are one of the most common food allergies and can cause deadly allergic reactions. Researchers are experimenting with a new patch that's showing some promise.