{"id":63947,"date":"2026-03-18T11:09:56","date_gmt":"2026-03-18T00:09:56","guid":{"rendered":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=63947"},"modified":"2026-03-18T11:09:56","modified_gmt":"2026-03-18T00:09:56","slug":"what-your-covid-booster-did-to-your-immune-system","status":"publish","type":"post","link":"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=63947","title":{"rendered":"What Your COVID Booster Did To Your Immune System"},"content":{"rendered":"<p>If you got multiple COVID-19 booster shots, something happened to your immune system that your doctor probably never mentioned, and that your post-vaccination blood test almost certainly cannot detect.<\/p>\n<p>A growing body of peer-reviewed research published between 2023 and 2025 documents that repeated mRNA boosting causes a progressive shift in the type of antibody your immune system produces against the virus. This shift is not random noise. It follows a well-understood biological pattern. And it has measurable, functional consequences.<\/p>\n<p>This article explains what that shift is, what it means, who it matters most for, and what should be done about it. No prior immunology background is required.<\/p>\n<p><a href=\"https:\/\/open.substack.com\/pub\/rwmalonemd\/p\/what-your-covid-booster-did-to-your?utm_campaign=post&amp;utm_medium=email\">https:\/\/open.substack.com\/pub\/rwmalonemd\/p\/what-your-covid-booster-did-to-your<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>If you got multiple COVID-19 booster shots, something happened to your immune system that your doctor probably never mentioned, and that your post-vaccination blood test almost certainly cannot detect. A growing body of peer-reviewed research published between 2023 and 2025 documents that repeated mRNA boosting causes a progressive shift in the type of antibody your &hellip; <\/p>\n<p class=\"link-more\"><a href=\"https:\/\/www.tomgrimshaw.com\/tomsblog\/?p=63947\" class=\"more-link\">Continue reading<span class=\"screen-reader-text\"> &#8220;What Your COVID Booster Did To Your Immune System&#8221;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5,6,133],"tags":[],"class_list":["post-63947","post","type-post","status-publish","format-standard","hentry","category-general-interest","category-health-tips","category-vaccines"],"_links":{"self":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/63947","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=63947"}],"version-history":[{"count":1,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/63947\/revisions"}],"predecessor-version":[{"id":63948,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=\/wp\/v2\/posts\/63947\/revisions\/63948"}],"wp:attachment":[{"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=63947"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=63947"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.tomgrimshaw.com\/tomsblog\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=63947"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}