tag:blogger.com,1999:blog-5548560205914833324.post7304370608970169690..comments2023-04-23T00:16:48.148+01:00Comments on Questioning Answers: You are my sunshine: vitamin D and autismPaul Whiteleyhttp://www.blogger.com/profile/14288851488012254897noreply@blogger.comBlogger4125tag:blogger.com,1999:blog-5548560205914833324.post-22889314805659355342011-07-18T11:00:53.869+01:002011-07-18T11:00:53.869+01:00Thanks for the comments and link David; the paper ...Thanks for the comments and link David; the paper is very interesting indeed.Paul Whiteleyhttps://www.blogger.com/profile/14288851488012254897noreply@blogger.comtag:blogger.com,1999:blog-5548560205914833324.post-9208144281397314212011-07-18T09:56:08.055+01:002011-07-18T09:56:08.055+01:00Dietary vitamin D is a red herring. Virtually no f...Dietary vitamin D is a red herring. Virtually no foods contain significant amounts of it. Yes, you can read the RDA if you eat 25 large eggs every day, but the RDA is a stupidly low amount, equivalent to what you get from about a minute outside in summer sun. Even if I were in Oslo at the moment, I'd get 2000IU in 7 minutes (http://nadir.nilu.no/~olaeng/fastrt/VitD-ez_quartMED.html -You can input the specific latitude for wherever you are in Scotland iyl). To get that from food would require about 750g of sardines (you'll struggle to find a better food source) every day!<br /><br />Partly in consequence of this, I don't see hyperpermeability of the gut as the cause of hypovitaminosis D. Rather, insufficient vitamin D causes hyperpermeability of the gut (http://ajpgi.physiology.org/content/294/1/G208.short).David Mosshttps://www.blogger.com/profile/08508780038542342811noreply@blogger.comtag:blogger.com,1999:blog-5548560205914833324.post-1855127479191648682011-07-16T19:38:18.942+01:002011-07-16T19:38:18.942+01:00Thanks for the comment. I think you touch upon qui...Thanks for the comment. I think you touch upon quite a few interesting points - not least also that Ireland (or rather the West of Ireland) is also one of the world's epicentres for coeliac (celiac) disease probably as a result of its relatively late introduction there. <br />In terms of vitamin D, there are so many different directions to take this. Yes, one could argue that sunlight is a primary factor, and only a few hundred years ago, most people would be out in it a lot more if only to farm, hunt and get out of the poorly lit, poorly ventilated stone hut. The biochemistry of metabolising vitamin D is also something that needs to enter the research spotlight a little more.Paul Whiteleyhttps://www.blogger.com/profile/14288851488012254897noreply@blogger.comtag:blogger.com,1999:blog-5548560205914833324.post-89223057234066939102011-07-16T17:56:01.454+01:002011-07-16T17:56:01.454+01:00Good post. I have wondered about vitamin d and oth...Good post. I have wondered about vitamin d and others vitamin deficiencies in relation to my genetic woodpile, which has a lot of welsh and scotch-irish in it (they say the scotch-irish adds a little defiance). Historically, none of these groups are known for their high grain intake. Since my son and I had such a dramatic response to the SCD diet, I wonder if there is something in the modern high-grain/low fat diet that can exasperate vitamin deficiences in certain populations. Maybe low sunlight exposure was no big deal with the ancestral diet and so certain adaptions were not developed.Mrs. Edhttps://www.blogger.com/profile/02144247274657295271noreply@blogger.com