What causes allergies to drugs and food?

Allergies to drugs and foods occur when your body recognizes these as "foreign." When you have an allergic reaction, your immune system is fighting against that drug or food in a way very similar to how it reacts to a bacteria or virus, trying to protect you from this potential hazard. Allergies can be passed down from parents to children, although this is less common than spontaneously developing an allergy. No one really knows why a certain person will develop an allergy to something like peanuts when someone else could eat peanut butter all day.

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.