• markko@lemmy.world
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    10 days ago

    I admit I don’t know at what point the dose becomes unsafe, but I’d imagine that taking a 1000 IU tablet daily plus the additional natural vitamin D intake could be problematic longterm.

      • markko@lemmy.world
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        10 days ago

        Thanks, it looks like vitamin D is definitely one of the harder ones to get too much of naturally.

        Other sources suggest much lower upper limits, but still a lot higher than you’re going to get via sunlight and diet.

        This study found 3.2% of participants were getting over 4,000 IU daily in 2013-2014 (vs <0.1% about a decade prior). That trend of increased intake has probably continued, so stats for a more recent year would be pretty interesting.

        I also didn’t realise you could get vitamin D supplements as high as 10,000 IU without a prescription, so I’m sure there will be people taking that regularly without good reason to do so.