{"id":1682,"date":"2008-10-25T21:47:57","date_gmt":"2008-10-25T19:47:57","guid":{"rendered":"http:\/\/www.wjst.de\/blog\/?p=1682"},"modified":"2017-08-27T17:16:40","modified_gmt":"2017-08-27T16:16:40","slug":"porque-no-te-callas","status":"publish","type":"post","link":"https:\/\/www.wjst.de\/blog\/sciencesurf\/2008\/10\/porque-no-te-callas\/","title":{"rendered":"Porque no te callas?"},"content":{"rendered":"

Here is the abstract of another pro D3 article by Gilchrest<\/a> in the AJCN with a few comments by me (notJuan Carlos<\/a>)<\/p>\n

Ultraviolet radiation is a carcinogen that also compromises skin appearance and function.<\/p><\/blockquote>\n

yea, yea<\/p>\n

Because the ultraviolet action spectra for DNA damage, skin cancer, and vitamin D3 photosynthesis are identical and vitamin D is readily available from oral supplements, why has sun protection become controversial?<\/p><\/blockquote>\n

nay, nay – even as a rheorical question this is already off key as sola dosis facit venerum<\/em>. Clearly, an “artificial” supplement needs to be carefully checked against a “physiological” exposure.<\/p>\n

First, the media and, apparently, some researchers are hungry for a new message.<\/p><\/blockquote>\n

not a genuine scientific argument<\/p>\n

Second, the controversy is fueled by a powerful special interest group: the tanning industry. This industry does not target the frail elderly or inner-city ethnic minorities, groups for whom evidence of vitamin D3 insufficiency is strongest, but rather fair-skinned teenagers and young adults, who are at highest risk of ultraviolet photodamage.<\/p><\/blockquote>\n

I see this industry also with reluctance – but her argument would even imply that the tanning industry should address now also the frail elderly. Or does she want to close all tanning studios?<\/p>\n

Third, evolution does not keep pace with civilization.<\/p><\/blockquote>\n

Nice argument – follow Rosseau or the advice of a physician who has a lower life expectancy than the general population?<\/p>\n

When nature gave humans the appealing capacity for cutaneous vitamin D3 photosynthesis, life expectancy was <40 y; long-term photodamage was not a concern; and vitamin D3 deficiency, with its resulting skeletal abnormalities (rickets), was likely to be fatal in early life.<\/p><\/blockquote>\n

Clearly wrong -we may an epidemiologist for an explanation of the meaning of average life expectancy in a cohort of high infant mortality.<\/p>\n

In the 21st century, life expectancy approaches 80 y in developed countries, vitamin D3 is available at the corner store, and the lifetime risk of skin cancer is 1 in 3 among white Americans. Medical and regulatory groups should avoid poorly reasoned, sensationalistic recommendations regarding unprotected ultraviolet exposure.<\/p><\/blockquote>\n

So, skin cancer in white Americans at age 80 y is the result of “poorly reasoned, sensationalistic recommendations regarding unprotected ultraviolet exposure” in the last 10 years??<\/p>\n

Instead, they should rigorously explore possible cause-and-effect relations between vitamin D3 status and specific diseases while advocating the safest possible means of ensuring vitamin D3 sufficiency.<\/p><\/blockquote>\n

A somewhat trivial end…<\/p>\n\n

 <\/p>\n

\n CC-BY-NC Science Surf , accessed 22.04.2026<\/span>\n <\/div>","protected":false},"excerpt":{"rendered":"

Here is the abstract of another pro D3 article by Gilchrest in the AJCN with a few comments by me (notJuan Carlos)   CC-BY-NC Science Surf , accessed 22.04.2026<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[8,2993],"tags":[2950,583,1319],"class_list":["post-1682","post","type-post","status-publish","format-standard","hentry","category-asthma-allergy","category-video","tag-sunshine-vitamin","tag-cholecalciferol","tag-vitamin_d_deficiency"],"_links":{"self":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/1682","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=1682"}],"version-history":[{"count":16,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/1682\/revisions"}],"predecessor-version":[{"id":9009,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/posts\/1682\/revisions\/9009"}],"wp:attachment":[{"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/media?parent=1682"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/categories?post=1682"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.wjst.de\/blog\/wp-json\/wp\/v2\/tags?post=1682"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}