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A comment on We're learning more about what Vitamin D does to our bodies. Parent comment

Re:We're learning more about what Vitamin D does to our bodies by kylecazar on Saturday November 29, 2025 @01:48PM (#46089782)
The reddit post was taking 50,000IU a day, which is usually the amount prescribed for someone to take once a week.

Your 4000IU isn't too much. Lots of the brands you see in stores are 5k for daily supplementation.

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Re:We're learning more about what Vitamin D does to our bodies by jijijijij on Sunday November 30, 2025 @10:22AM (#46097339)
> Your 4000IU isn't too much.

By what metric? Jeez. People, you need to get your blood checked. There is no one-fits-all dosage. In winter, 4000 IU/d was enough to raise my blood levels well into the excessive range.

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Re:We're learning more about what Vitamin D does to our bodies by steve1977 on Sunday November 30, 2025 @10:39AM (#46097505)
My 4000 units were after blood testing and also after genetic testing which showed some VDR mutations that might benefit from supplementation. As mentioned in another comment, that dose brings me slightly over 30 ng/ml, so basically borderline ok.

I fully agree that supplementation should always be combined with both blood testing and also a general medical evaluation.

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