1. Poorly conceived experiments
    Pete Pete United Kingdom says:
    October 7, 2010 at 8:33 AM

    I have read the paper. It is a case of very careful analysis of someone elses poorly conceived experiments. The doses considered were between 133 IU daily to 14,000 IU per week (2,000IU a day). Only the highest of these amounts is not going to be swamped by the effect of sunshine (upto 20,000IU a day on full skin exposure). It also says that "Where there were more than one vitamin D dosage group in the studies, we analysed the data after combining all dosage groups together, compared to placebo." So if there was an effect in the highest group it would be hidden by the lowest.

    Instead of publishing a press release can we have a critical analysis of the paper.  The analysis looks fairly okay but the work is basically flawed becuase the original work is flawed.  If it had analysed the highest vitamin d levels alone then there may have been an effect.  However, many now think that 2,000IU a day is rather low.

    Reply
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