Is it Possible to Be Allergic to 1 Legume, Lentil, or Bean but Not Others?
Yes, this is possible. You can be allergic to 1 type of legume but not other legumes. Legumes include:
This is because of the different levels of cross-reactivity among types of legumes. Cross-reactivity is when the proteins in 1 substance are like the proteins in another. Your immune system sees them as the same.
You may have a positive allergy test to other types of legumes because of cross-reactivity, but you may not react when you eat them. For example, you can be allergic to peanuts but may not react to other legumes, such as soybeans or chickpeas. Cross-reactivity to related foods can vary a lot among people.
It is important to have an allergist check for allergies to legumes on a case-by-case basis. Typically, this includes:
- Reviewing the clinical history
- Specific food allergy testing
- Oral food challenge (if needed) under medical supervision
John M. James, MD, is a board-certified allergist. He is also President of Food Allergy Consulting and Education Services, LLC. He has worked as a medical specialist in the field of allergy, asthma, and immunology for over 30 years. Dr. James received his bachelor’s degree from the University of Arkansas and his Doctor of Medicine degree from the University of Tennessee. He is board certified by the American Board of Allergy and Immunology.
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