Ask the allergist is a regular feature in our newsletters where Canadian allergists answer your questions!
Please note: The allergists featured in this series answer questions on general topics, please talk to your doctor if you have questions about your own health or the health of your child.
This month Dr. Julia Upton answers a question about allergies to seeds.
People may have an allergy to seeds, such as sesame, poppy, flax, sunflower or pumpkin. If someone is allergic to one type of seed, is it safe to eat other seeds?
Seeds come from different plant families, this means being allergic to one does not automatically mean you’ll react to others. Some seeds share similar proteins, and this cross-reactivity can cause allergic symptoms in certain people. For example, some people who are allergic to sesame sometimes have reactions to poppy or sunflower, but this is not universal.
If you are allergic to one type of seed (e.g., sesame) but can safely eat another type of seed (e.g., chia), it is not safe to assume all other seeds are okay to consume. The best approach is to consult an allergist for advice which may include specific testing before introducing new seeds.
Practical advice for families
- Always read labels carefully because seeds can be ingredients in breads, snacks, spice mixes, and other foods.
- Carry an epinephrine device, if prescribed.
- Discuss with your allergist whether testing or an oral food challenge is appropriate for other seeds, and whether treatments such as immunotherapy are appropriate.
Learn more
Do you have a food allergy-related question you’d like to ask an allergist in the months to come? If so, send it along to us at info@foodallergycanada.ca.
Dr. Julia Upton is the Division Head of Immunology and Allergy at The Hospital for Sick Children and a Professor in the Department of Pediatrics at the University of Toronto. She is on the Board of Directors of the Canadian Society of Allergy and Clinical Immunology, and is a member of our Healthcare Advisory Board.
Please note: Dr. Upton is answering as an individual allergist and her answers do not constitute an official position of her affiliated organizations. Her responses are for informational purposes only and do not constitute specific medical advice, recommendations, diagnosis, or treatment. Please talk to your doctor about any concerns or questions you may have regarding your own health or the health of your child.
Tags: flax seeds, poppy seeds, pumpkin seeds, seeds, sesame seeds, sunflower seeds