{"id":31267,"date":"2026-04-22T08:40:05","date_gmt":"2026-04-22T12:40:05","guid":{"rendered":"https:\/\/aafa.org\/?post_type=podcast&#038;p=31267"},"modified":"2026-04-22T17:57:25","modified_gmt":"2026-04-22T21:57:25","slug":"cross-reactivity-food-allergies","status":"publish","type":"podcast","link":"https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/cross-reactivity-food-allergies\/","title":{"rendered":"When Allergies Attack the Wrong Plant: Cross-Reactivity and Food Allergies"},"content":{"rendered":"<p>[et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Podcast Hero Section&#8221; module_class=&#8221;hero ctr&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_image=&#8221;https:\/\/aafa.org\/wp-content\/uploads\/2022\/07\/AAFA-Website_Secondary_News.jpg&#8221; background_position=&#8221;center_right&#8221; custom_padding=&#8221;2%||2%||true|false&#8221; saved_tabs=&#8221;all&#8221; locked=&#8221;off&#8221; collapsed=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row admin_label=&#8221;Row&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_image=&#8221;https:\/\/aafa.org\/wp-content\/uploads\/2022\/08\/Secondary_pagetitle_BG.png&#8221; background_size=&#8221;initial&#8221; background_position=&#8221;bottom_left&#8221; background_horizontal_offset=&#8221;0%&#8221; background_vertical_offset=&#8221;-5%&#8221; custom_margin=&#8221;|||0px|false|false&#8221; custom_padding=&#8221;2%||0px||false|false&#8221; collapsed=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; custom_padding=&#8221;|||5%|false|false&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; text_font=&#8221;|600|||||||&#8221; text_text_color=&#8221;#FFFFFF&#8221; text_font_size=&#8221;64px&#8221; header_2_font=&#8221;|600|||||||&#8221; header_2_text_color=&#8221;#FFFFFF&#8221; header_2_font_size=&#8221;62px&#8221; custom_margin=&#8221;||0px||false|false&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2>AAFAnoon Chats Podcast<\/h2>\n<p>[\/et_pb_text][et_pb_code admin_label=&#8221;Breadcrumbs&#8221; module_class=&#8221;bcrumb&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; text_orientation=&#8221;left&#8221; custom_margin=&#8221;||||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; custom_css_main_element=&#8221;font-size:16px;||color: #fff;&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Section&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; max_width=&#8221;780px&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_post_title meta=&#8221;off&#8221; featured_image=&#8221;off&#8221; admin_label=&#8221;Page Title&#8221; module_class=&#8221;tert-content q&#8221; _builder_version=&#8221;4.17.4&#8243; _module_preset=&#8221;default&#8221; title_font=&#8221;|600|||||||&#8221; title_text_align=&#8221;left&#8221; title_text_color=&#8221;#008c99&#8243; title_font_size=&#8221;39px&#8221; background_enable_image=&#8221;off&#8221; background_size=&#8221;contain&#8221; background_position=&#8221;center_left&#8221; module_alignment=&#8221;left&#8221; custom_margin=&#8221;||0px||false|false&#8221; custom_padding=&#8221;||||false|false&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_post_title][et_pb_code admin_label=&#8221;YT Embed&#8221; module_class=&#8221;mg_yt_embed&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<div class=\"podcast-yt-meta\"><span>April 22, 2026 | AAFA National<\/span><div class=\"podcast-share-button-container\"><button class=\"podcast-share-button\" data-post-url=\"https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/cross-reactivity-food-allergies\/\" data-post-title=\"When Allergies Attack the Wrong Plant: Cross-Reactivity and Food Allergies\" data-youtube-link=\"https:\/\/youtu.be\/ZkKIwwIneag%20https:\/\/youtu.be\/ZkKIwwIneag\">\r\n            <span>Share<\/span>\r\n            <svg xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"22\" height=\"22\" viewBox=\"0 0 22 22\" fill=\"none\">\r\n                <path d=\"M21.4934 3.5423L15.5602 0.116267L15.5551 0.114252L15.5521 0.111229C15.2841 -0.0379056 14.9536 -0.0379056 14.6906 0.116267C14.4246 0.271449 14.2573 0.559657 14.2573 0.866996V2.27068C14.2129 2.28378 14.1666 2.29688 14.1232 2.30898C13.1821 2.58508 12.2661 2.95389 11.4015 3.40533C10.55 3.85173 9.73981 4.3858 8.99514 4.98938C8.25953 5.58492 7.58438 6.25604 6.98281 6.98056C6.38929 7.69801 5.86631 8.47394 5.42698 9.28713C4.99367 10.0923 4.63796 10.9407 4.37497 11.8103C4.11399 12.6689 3.93664 13.5546 3.85099 14.4444C3.7734 15.2515 3.76836 16.0718 3.83789 16.882C3.86107 17.148 4.08074 17.3535 4.34879 17.3566H4.35685C4.61985 17.3566 4.84154 17.1601 4.87278 16.8971C4.95742 16.1615 5.11059 15.4339 5.32724 14.7376C5.55699 13.9899 5.8613 13.2674 6.23313 12.5863C6.59993 11.9151 7.03019 11.2783 7.51994 10.6959C7.9996 10.1235 8.53869 9.59449 9.11911 9.12995C9.69148 8.67046 10.3082 8.2684 10.9531 7.93585C11.5899 7.60535 12.258 7.34032 12.9392 7.14684C13.3725 7.0229 13.8139 6.92717 14.2572 6.86066V7.72221C14.2572 8.03156 14.4225 8.31775 14.6906 8.47294C14.8226 8.55053 14.9747 8.58882 15.1269 8.58882C15.276 8.58882 15.4262 8.55053 15.5582 8.47495L21.4944 5.04686C21.7625 4.89168 21.9308 4.60347 21.9308 4.29311C21.9267 3.98376 21.7614 3.69749 21.4934 3.5423Z\" fill=\"#008C99\"\/>\r\n                <path d=\"M20.3278 8.17244C19.8662 8.17244 19.4944 8.54628 19.4944 9.00579V19.3889C19.4944 19.5975 19.3241 19.7678 19.1155 19.7678H2.04858C1.83999 19.7678 1.66968 19.5975 1.66968 19.3889L1.66867 2.32503C1.66867 2.11644 1.83897 1.94613 2.04757 1.94613H10.387C10.8486 1.94613 11.2204 1.57229 11.2204 1.11277C11.2204 0.651249 10.8466 0.279419 10.387 0.279419H2.0486C0.915981 0.279419 0 1.19741 0 2.32802V19.3919C0 20.5245 0.917993 21.4405 2.0486 21.4405H19.1124C20.2451 21.4405 21.161 20.5225 21.161 19.3919V9.00569C21.161 8.54417 20.7893 8.17244 20.3278 8.17244Z\" fill=\"#008C99\"\/>\r\n            <\/svg>\r\n        <\/button><\/div><\/div><div class=\"podcast-yt-embed\">\r\n            <iframe loading=\"lazy\" \r\n                width=\"560\" \r\n                height=\"315\" \r\n                src=\"https:\/\/www.youtube.com\/embed\/ZkKIwwIneag\" \r\n                title=\"YouTube video player\" \r\n                frameborder=\"0\" \r\n                allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" \r\n                allowfullscreen>\r\n            <\/iframe>\r\n        <\/div>[\/et_pb_code][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<p>Sometimes proteins in one plant are similar to proteins in another plant and the immune system gets confused and sees them as the same. This can cause false positive allergy tests or in some cases, an allergic reaction.<\/p>\n<p>In this episode of AAFAnoon Chats, host Zulema Chavez interviews board certified allergists, Dr. Michael Pistiner, and Dr. Nowak-Wegrzyn. Dr. Pistiner and Dr. Nowak-Wegrzyn discuss:<\/p>\n<ul>\n<li>Cross-reactivity and the role it plays with food allergies<\/li>\n<li>What Food-Pollen Allergy Syndrome (PFAS) and Latex-Food Allergy Syndrome are.<\/li>\n<li>Management and treatment options for these syndromes.<\/li>\n<li>How these syndromes are diagnosed.<\/li>\n<\/ul>\n<p>(0:00) Intro<br \/>(1:00) Understanding Cross-Reactivity<br \/>(3:31) Pollen Food Allergy Syndrome (Oral Allergy Syndrome) Explained<br \/>(12:20) Differentiating Food Allergies<br \/>(19:30) Latex Fruit Syndrome Overview<br \/>(24:10) Allergy Testing and Diagnosis<br \/>(30:20) Managing Dietary Restrictions<\/p>\n<p>[\/et_pb_text][et_pb_divider color=&#8221;#e2e2e2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_code admin_label=&#8221;Player Links&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<h2 class=\"podcast-player-links-heading\">Available on:<\/h2><div class=\"podcast-player-links\"><a href=\"https:\/\/podcasts.apple.com\/us\/podcast\/aafanoon-chats\/id1815584404\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/US-UK_Apple_Podcasts_Listen_Color_Lockup_RGB_Blk_Type_062023-1-1.png\" alt=\"Apple Podcasts\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">Apple Podcasts<\/span>\r\n            <\/a><a href=\"https:\/\/open.spotify.com\/show\/25GhlUfbtkFUJM9ZqbHLYa?si=97740c67920b46ee\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/spotify-logo.png\" alt=\"Spotify\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">Spotify<\/span>\r\n            <\/a><a href=\"https:\/\/www.youtube.com\/playlist?list=PLrLBy23tjd-KLB6QMuFkdCmlFY6HD1XXk\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/Layer_1-5.png\" alt=\"YouTube\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">YouTube<\/span>\r\n            <\/a><a href=\"https:\/\/music.amazon.com\/podcasts\/b8b7d7a4-3fcf-4e59-bf1f-8d5c1089be59\/aafanoon-chats\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/images-1.png\" alt=\"Amazon music\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">Amazon music<\/span>\r\n            <\/a><a href=\"https:\/\/www.iheart.com\/podcast\/269-aafanoon-chats-278967087\/\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/Layer_1-6.png\" alt=\"iHeart podcasts\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">iHeart podcasts<\/span>\r\n            <\/a><a href=\"https:\/\/overcast.fm\/itunes1815584404\/aafanoon-chats\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/Group-421.png\" alt=\"Overcast\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">Overcast<\/span>\r\n            <\/a><a href=\"https:\/\/pca.st\/xyrf6lwk\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/pocket-casts-logo-e1753366619977.png\" alt=\"Pocket Casts\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">Pocket Casts<\/span>\r\n            <\/a><a href=\"https:\/\/soundcloud.com\/user-816009301?utm_source=clipboard&#038;utm_medium=text&#038;utm_campaign=social_sharing\" target=\"_blank\" rel=\"noopener noreferrer\" class=\"podcast-player-link\">\r\n                <img decoding=\"async\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2025\/07\/Group-420.png\" alt=\"SoundCloud\" loading=\"lazy\" \/>\r\n                <span class=\"sr-only\">SoundCloud<\/span>\r\n            <\/a><\/div>[\/et_pb_code][et_pb_divider color=&#8221;#e2e2e2&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][\/et_pb_divider][et_pb_text _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; locked=&#8221;off&#8221; global_colors_info=&#8221;{}&#8221;]<\/p>\n<h2><span class=\"yt-core-attributed-string--link-inherit-color\" dir=\"auto\">Resources: <\/span><\/h2>\n<ul>\n<li><a href=\"https:\/\/community.kidswithfoodallergies.org\/blog\/understanding-oral-allergy-syndrome\" target=\"_blank\" rel=\"noopener\">Understanding Oral Allergy Syndrome (Pollen Food Allergy Syndrome)<\/a><\/li>\n<li><a href=\"https:\/\/aafa.org\/allergies\/types-of-allergies\/pollen-allergy\/\" target=\"_blank\" rel=\"noopener\">Pollen Allergy<\/a><\/li>\n<li><a href=\"https:\/\/kidswithfoodallergies.org\/living-with-food-allergies\/what-is-a-food-allergy\/food-allergies-and-cross-reactivity\/\" target=\"_blank\" rel=\"noopener\">Food Allergies and Cross-Reactivity<\/a><\/li>\n<li><a href=\"https:\/\/aafa.org\/allergies\/types-of-allergies\/latex-allergy\/\" target=\"_blank\" rel=\"noopener\">Latex Allergy<\/a><\/li>\n<li><a href=\"https:\/\/aafa.org\/allergies\/allergy-diagnosis\/\" target=\"_blank\" rel=\"noopener\">How Do Doctors Diagnose Allergies?<\/a><\/li>\n<li><a href=\"https:\/\/community.kidswithfoodallergies.org\/join\" target=\"_blank\" rel=\"noopener\">Kids with Food Allergies (KFA) Online Support Community<\/a><\/li>\n<\/ul>\n<p>Michael Pistiner, MD, is Director of Food Allergy Advocacy, Education and Prevention for the MassGeneral Hospital for Children, Food Allergy Center. Anna Nowak-Wegrzyn, MD, is the director of the\u00a0Pediatric Allergy Program\u00a0at\u00a0Hassenfeld Children\u2019s Hospital at NYU Langone.<\/p>\n<p>Disclosure: This episode was produced by the Asthma and Allergy Foundation of America and made possible in part by support from Genentech. Its contents are solely the responsibility of AAFA and the guest speakers, and do not necessarily represent the official views of the sponsors.<\/p>\n<p>[\/et_pb_text][\/et_pb_column][\/et_pb_row][\/et_pb_section][et_pb_section fb_built=&#8221;1&#8243; admin_label=&#8221;Recent Podcasts&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; background_color=&#8221;#28BDBA&#8221; locked=&#8221;off&#8221; collapsed=&#8221;on&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_row _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_column type=&#8221;4_4&#8243; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;][et_pb_code admin_label=&#8221;Recent Podcasts&#8221; _builder_version=&#8221;4.27.4&#8243; _module_preset=&#8221;default&#8221; global_colors_info=&#8221;{}&#8221;]<h2 class=\"recent-podcasts-heading\">Other Episodes<\/h2><div class=\"recent-podcasts\"><div class=\"recent-podcast-item\"><div class=\"recent-podcast-thumbnail\">\r\n                  \r\n                        <img decoding=\"async\" onclick=\"window.open('https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/preventing-asthma-emergencies-in-children\/', '_blank')\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2026\/09\/uncontrolled-asthma-episode-website-1024x576.jpg\" alt=\"Preventing Asthma Emergencies in Children\" loading=\"lazy\" \/>\r\n                   \r\n                <\/div><div class=\"recent-podcast-details\"><div class=\"recent-podcast-date\">September 22, 2026<\/div><h3 class=\"recent-podcast-title\">\r\n                <a href=\"https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/preventing-asthma-emergencies-in-children\/\">Preventing Asthma Emergencies in Children<\/a>\r\n            <\/h3><\/div><\/div><div class=\"recent-podcast-item\"><div class=\"recent-podcast-thumbnail\">\r\n                  \r\n                        <img decoding=\"async\" onclick=\"window.open('https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/confident-table-2\/', '_blank')\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2026\/08\/confident-table-episode-website-1024x576.jpg\" alt=\"The Confident Table: Food Allergy Treatment Options &#8211; Part 2\" loading=\"lazy\" \/>\r\n                   \r\n                <\/div><div class=\"recent-podcast-details\"><div class=\"recent-podcast-date\">August 11, 2026<\/div><h3 class=\"recent-podcast-title\">\r\n                <a href=\"https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/confident-table-2\/\">The Confident Table: Food Allergy Treatment Options &#8211; Part 2<\/a>\r\n            <\/h3><\/div><\/div><div class=\"recent-podcast-item\"><div class=\"recent-podcast-thumbnail\">\r\n                  \r\n                        <img decoding=\"async\" onclick=\"window.open('https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/school-health-care-plans-and-accommodations\/', '_blank')\" src=\"https:\/\/aafa.org\/wp-content\/uploads\/2026\/07\/school-plans-and-accommodations-episode-website-1024x576.jpg\" alt=\"Navigating School Health Care Plans and Accommodations for Asthma and Allergies\" loading=\"lazy\" \/>\r\n                   \r\n                <\/div><div class=\"recent-podcast-details\"><div class=\"recent-podcast-date\">July 29, 2026<\/div><h3 class=\"recent-podcast-title\">\r\n                <a href=\"https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/school-health-care-plans-and-accommodations\/\">Navigating School Health Care Plans and Accommodations for Asthma and Allergies<\/a>\r\n            <\/h3><\/div><\/div><\/div>[\/et_pb_code][\/et_pb_column][\/et_pb_row][\/et_pb_section]<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Dr. Pistiner and Dr. Nowak-Wegrzyn discuss cross-reactivity and the role it plays with pollen and food allergies.<\/p>\n","protected":false},"featured_media":31269,"template":"","meta":{"_acf_changed":false,"_et_pb_use_builder":"on","_et_pb_old_content":"","_et_gb_content_width":"","_links_to":"","_links_to_target":""},"class_list":["post-31267","podcast","type-podcast","status-publish","has-post-thumbnail","hentry"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.5 (Yoast SEO v28.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>When Allergies Attack the Wrong Plant: Cross-Reactivity and Food Allergies - Asthma and Allergy Foundation of America<\/title>\n<meta name=\"description\" content=\"Sometimes proteins in one plant are similar to proteins in another plant and the immune system gets confused and sees them as the same. This can cause false positive allergy tests or in some cases, an allergic reaction.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aafa.org\/asthma-allergy-news\/podcasts\/\/cross-reactivity-food-allergies\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"When Allergies Attack the Wrong Plant: Cross-Reactivity and Food Allergies\" \/>\n<meta property=\"og:description\" content=\"Sometimes proteins in one plant are similar to proteins in another plant and the immune system gets confused and sees them as the same. 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