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Risk factors
By Mayo Clinic staffIt isn't clear why some people develop allergies while others don't. However, people with certain risk factors have a greater chance of developing peanut allergy.
Food allergy risk factors include:
- Age. Food allergies are most common in children, especially toddlers and infants. As you grow older, your digestive system matures, and your body is less likely to react to food that triggers allergies.
- Past allergy to peanuts. Some children with peanut allergy outgrow it. However, even if you seem to have outgrown peanut allergy, it may recur.
- Other allergies. If you're already allergic to one food, you may be at increased risk of becoming allergic to another. Likewise, having another type of allergy, such as hay fever, increases your risk of having a food allergy.
- Family members with allergies. You're at increased risk of peanut allergy if other allergies, especially other types of food allergies, are common in your family.
- Atopic dermatitis. Some people with the skin condition atopic dermatitis (eczema) also have a food allergy.
While some people think food allergies are linked to childhood hyperactivity and to arthritis, there's no evidence to support this.
References
- Peanuts. Food Allergy and Anaphylaxis Network. http://www.foodallergy.org/page/peanuts. Accessed March 4, 2012.
- Food allergy: An overview. National Institute of Allergy and Infectious Diseases. http://www.niaid.nih.gov/topics/foodAllergy/research/Pages/ReportFoodAllergy.aspx. Accessed March 4, 2012.
- Husain Z, et al. Peanut allergy: An increasingly common life-threatening disorder. Journal of the American Academy of Dermatology. 2012;66:136.
- Finkelman FD. Peanut allergy and anaphylaxis. Current Opinion in Immunology. 2010;22:783.
- Tintinalli JE, et al. Tintinalli's Emergency Medicine: A Comprehensive Study Guide. 7th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com/content.aspx?aID=6358201. Accessed March 4, 2012.
- Hay WW, et al. Current Diagnosis & Treatment: Pediatrics. 20th ed. New York, N.Y.: The McGraw-Hill Companies; 2011. http://www.accessmedicine.com/content.aspx?aID=6589316. Accessed March 4, 2012.
- Pansare M, et al. Peanut allergy. Current Opinion in Pediatrics. 2010;22:642.
- Guidelines for the diagnosis and management of food allergy in the United States: Summary of the NIAID-sponsored expert panel report. National Institute of Allergy and Infectious Diseases. http://www.niaid.nih.gov/topics/foodAllergy/clinical/Pages/default.aspx. Accessed March 6, 2012.
- School guidelines for managing students with food allergies. The Food Allergy & Anaphylaxis Network. http://www.foodallergy.org/page/food-allergy--anaphylaxis-network-guidelines. Accessed March 6, 2012.
- Peanut allergy. American College of Allergy, Asthma and Immunology. http://www.acaai.org/allergist/allergies/Types/food-allergies/types/Pages/peanut-allergy.aspx. Accessed March 6, 2012.
- Kim EH, et al. Sublingual immunotherapy for peanut allergy: Clinical and immunologic evidence of desensitization. Journal of Allergy and Clinical Immunology. 2011;127:640.
- Stahl MC, et al. Potential therapies for peanut allergy. Annals of Allergy, Asthma & Immunology. 2011;106:179.
- Varshney P, et al. A randomized controlled study of peanut oral immunotherapy: Clinical desensitization and modulation of the allergic response. Journal of Allergy and Clinical Immunology. 2011;127:654.
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