Comment by zelphirkalt
6 hours ago
Only recently again I read in the newspaper, that most products are overdosed. There is a typical number that the vitamin D products usually show, and in the article it said, that only up to 800 IU is safe, and everything above is an overdose. There are many products out there with 2000 UI or maybe even more. Beware.
EDIT: Wow, the HN-local doctors at it again. Imagine getting downvoted for sharing information from newspaper article (and honestly labeling that info as such), that probably was written by someone consulting medical professionals. But hey HN will know better!
Being at the beach (in summer) for a half an hour will produce 10,000 and 25,000 IU for the average european.
See: Vitamin D and health: evolution, biologic functions, and recommended dietary intakes for vitamin D (293 citations)
Could you cite that claim from the paper?
Not OP, but the paper says on page 8
> An adult in a bathing suit exposed to 1 minimal erythemal dose of ultraviolet radiation (a slight pinkness to the skin 24 h after exposure) was found to be equivalent to ingesting between 10,000 and 25,000 IU of vitamin D (Fig. 6).
Doesn't say 30 minutes, but it may be 30 minutes depending on your skin colour and the local strength of the sun.
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So? What's your claim here? Are you claiming that our skin works the same way as our digestive system? That would be a ridiculous claim. And fyi, many people get a proper sunburn, if they stayed in the sun for 30 min straight without protection, at least in summer. So your 30 min statistic doesn't really tell us anything about something being healthy or not.
I've given you everything you need to find out for yourself. Your incredulity on this is a self-confession.
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Before I take medical advice from a newspaper, I might as well ask my local esoteric nut.
Can you provide a link to the newspaper article at least while whining about the downvotes?
I would like to, but I cannot, since it is a region-local newspaper that comes as actual paper, that only has a paid online offer, to which I have no access, nor could I post a link to that. If I went through recent paper form newspaper, I could get a photo of the text in German, but then I would (A) need to spend that time, and (B) need a place to upload pictures, without having to make an account, and only then get back to you with a link. To be honest, I am too lazy to do that, just to justify a comment on HN.
Understandable, but you wrote all of that and you still haven't even named the newspaper.
That's not unreasonable, but then you also didn't really "cite" your source. Even without photographing the paper, giving the name of it, article title, or author would go a long way.
I think the downvotes are harsh btw and in general HNers have gotten too reflexively downvoting IMHO.
Misinformation. Do more research.
If you have useful information to share, please do so. Telling people "Do more research" adds nothing to the conversation.
Examine.com's page on Vitamin D has a table on tolerable upper levels segmented by age ranges.
https://examine.com/supplements/vitamin-d/
Neither does "I read in the newspaper, that most products are overdosed" to the honest.
While (I think) I agree with you on the facts here, I don't think this type of dismissive comments are that useful either.
Can you give the replyee some pointers, for example? Link to articles or studies that show a different view?
Just Google it. There's tons of research on this so I don't know why I need to provide a specific link when this is common knowledge.
But also here is something to think about: your body will produce more D3 than that by being in the sun for just several minutes. So if you consider such a low dose of D3 an overdose then you better steer clear of the sun!
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Hi, Mr. wolf language.