{"id":1266,"date":"2007-10-12T20:14:07","date_gmt":"2007-10-12T18:14:07","guid":{"rendered":"http:\/\/www.wjst.de\/blog\/2007\/10\/12\/vitamin-d-supplementation\/"},"modified":"2007-10-13T08:34:04","modified_gmt":"2007-10-13T06:34:04","slug":"vitamin-d-supplementation","status":"publish","type":"post","link":"https:\/\/www.wjst.de\/blog\/sciencesurf\/2007\/10\/vitamin-d-supplementation\/","title":{"rendered":"Why the allergy epidemic did not already start 1935 in Germany"},"content":{"rendered":"<p>moblog &#8211; I have now spent another day at the Berlin Document Center browsing through hundreds of RKI pages &#8211; manuscripts, correspondence, bills and personal files. My goal was to find out why the allergy epidemic did not already start off 1935 in Germany when vitamin D synthesis was already possible on a large scale.<br \/>\nIndeed, I found evidence that at least 3 companies radiated at that time yeast derived ergosterin by UV quartz lamps &#8211; <a href=\"http:\/\/de.wikipedia.org\/wiki\/I.G._Farben\">I.G. Farben<\/a>, Nordmark-Werke and Deutsche Vitamin Gesellschaft. The number of companies in this field<!--more--> was probably limited by the American Steenbock patent. Quartz bulb power was difficult to control and even lost activity over time, a reason why some vitamin D preparations contained only low activities (R86-3588). A clinical trial in a child care unit in Hamburg (reported by a letter of the municipality of Hamburg 22.9.1941) showed that 46% of 200 children developed signs of rickets despite vitamin D supplements! So my earlier impression that vitamin D supplementation has been wide spread (and efficient) was certainly wrong. <\/p>\n<p>I made even another discovery that may relate to the last <a href=\"https:\/\/www.wjst.de\/blog\/2007\/09\/26\/a-short-history-of-steamed-cod-liver-oil\/\">liver cod oil post<\/a>: The &#8220;Deutsche Vitamin Gesellschaft&#8221; added provitamin A to their vitamin D preparation which my have <a href=\"https:\/\/www.wjst.de\/blog\/2007\/09\/28\/vitamin-a-and-allergy\/\">suppressed the immunological activity<\/a> of vitamin D while preserving the antirachitic activity.<\/p>\n\n<p>&nbsp;<\/p>\n<div class=\"bottom-note\">\n  <span class=\"mod1\">CC-BY-NC Science Surf , accessed 10.04.2026<\/span>\n <\/div>","protected":false},"excerpt":{"rendered":"<p>moblog &#8211; I have now spent another day at the Berlin Document Center browsing through hundreds of RKI pages &#8211; manuscripts, correspondence, bills and personal files. My goal was to find out why the allergy epidemic did not already start off 1935 in Germany when vitamin D synthesis was already possible on a large scale. &hellip; <a href=\"https:\/\/www.wjst.de\/blog\/sciencesurf\/2007\/10\/vitamin-d-supplementation\/\" class=\"more-link\">Continue reading <span class=\"screen-reader-text\">Why the allergy epidemic did not already start 1935 in Germany<\/span> <span class=\"meta-nav\">&rarr;<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,10],"tags":[1296,956,1298,1297,1293,1251,1294,995,1295],"class_list":["post-1266","post","type-post","status-publish","format-standard","hentry","category-asthma-allergy","category-sunshine-vitamin","tag-allergy_epidemic","tag-berlin_document_center","tag-cod_oil","tag-hamburg","tag-municipality","tag-provitamin","tag-quartz_lamps","tag-rickets","tag-rki"],"_links":{"self":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/1266","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/comments?post=1266"}],"version-history":[{"count":0,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/1266\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/media?parent=1266"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/categories?post=1266"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/tags?post=1266"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}