What causes allergies?

Dr. Jeanne Morrison, PhD on behalf of Sigma Nursing

Family Practitioner

Particular ingredients or chemicals within your environment, the foods you eat, or the drugs you take can cause allergies. Normally, these substances are harmless. In some people, however, their immune system overreacts and mistakenly attacks these elements. This produces an allergic reaction.

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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.