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A comment on Vitamin D deficiency and Covid-19 mortality [pdf]. Parent comment

Re:Vitamin D deficiency and Covid-19 mortality [pdf] by plus on Wednesday August 05, 2020 @10:35PM (#24067641)
This is entirely anecdotal, and I don't have an expert's opinion on this, but I believe I was suffering from Vitamin D toxicity. I had been taking 5000 IU/125 mcg of Vitamin D3 daily for several years, and one day I started experiencing painful and distressing heart palpitations. They persisted on and off for months, until at one point near the beginning of quarantine I ran out of Vitamin D supplements. I went a few weeks before buying more, and during this time I didn't have any heart palpitations, though I hadn't really noticed until after I started taking Vitamin D again, at which point my heart palpitations restarted immediately. I stopped taking Vitamin D and haven't had any heart palpitations since (several months now). My working hypothesis is that the Vitamin D supplements were causing heightened blood calcium levels, which was messing with my heart.
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Re:Vitamin D deficiency and Covid-19 mortality [pdf] by ZIMD on Thursday August 06, 2020 @02:26AM (#24068592)
Fairly likely you are magnesium deficient...magnesium is a critical cofactors to vitamin D and even moderate D3 intake can trigger symptoms such as muscle cramps and heart rhythm changes. Unfortunately no easy way to accurately test a magnesium level, as it’s mostly intracellular and blood tests are pretty much useless
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Re:Vitamin D deficiency and Covid-19 mortality [pdf] by plus on Thursday August 06, 2020 @01:18PM (#24073103)
Possible, but I think unlikely. These days, my diet mainly consists of Soylent and Vite Ramen, which together provide me with 105% of my DRV of Magnesium in the form of Magnesium Phosphate and Magnesium Gluconate, respectively.
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Re:Vitamin D deficiency and Covid-19 mortality [pdf] by fuber2018 on Thursday August 06, 2020 @03:00PM (#24074272)
Looking at the nutritional info for Soylent and Vite Ramen shows that they also contain Vitamin D - at the same DRV percentages.

If you're getting 105% of your magnesium from these items, then you're also getting 105% of your Vitamin D before taking any additional Vitamin D supplements/sun exposure.

Adding the 5000IU of Vitamin D3 would be increasing your intake to 5840IU (730% of DRV) - assuming you didn't ingest anything else fortified with Vitamin D.

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Re:Vitamin D deficiency and Covid-19 mortality [pdf] by andy_ppp on Thursday August 13, 2020 @12:27AM (#24139934)
Not a single person knows what optimal Vitamin D or Magnesium means for the population or for you individually. So it’s very difficult assumptions here, even with testing genetics plays a huge factor.
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