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David,

I may be biased, but I don't recomend taking vitamin D supplements
totally without reference to the actual serum level.

I had a result of 1400 nmol/L last week (toxicity starts at serum
levels of about 500 nmol/L), from someone who thought he was taking
2000 IU per day. I am still trying to figure out what he has done;
perhaps he got the decimal point in the wrong place and was taking
20,000 IU, or perhaps he already had a high level before he started
taking the supplement.

Although deficiency is widespread, not everybody has a low serum
vitamin D level. In spite of what you may read, toxicity is still a
real problem. Maybe your years of basking in the Australian sunshine
have already put your stores of vit D at the top of the range?

Nick

2009/11/25 David Burgess <[log in to unmask]>:
> It might be more rewarding to enquire how many of us are taking vit D
> supplements based on available evidence that more is better - I know I am.
> I made an enquiry on mailbase about interpreting 'raised' PTH values in
> patients being screened for osteoporosis roughly 2 years ago.  Condensing the
> advice I received then I would say there is not much point in knowing a
> patients PTH status unless they have symptoms or biochemical evidence of
> hyperparathyroidism, or have CRF.  Measure vitamin D and treat, or just treat.
> Regards, David
>
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------ACB discussion List Information--------
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community working in clinical biochemistry.
Please note, archived messages are public and can be viewed
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they are responsible for all message content.
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