I haven't seen convincing evidence that vitamin D supplementation is materially useful for anything but rickets. I get the impression that naturally high serum levels are an effect rather than a cause of other positive things, and that supplementation mostly increases serum levels without effecting positive things. It doesn't seem harmful either, so can't hurt might help?
lr4444lr 1 day ago||
Do we really know what "optimal" vitamin D levels are? I've heard a wide range of answers on this, and it's not even clear to me that we know whether there is natural human variability in the amount needed.
CGMthrowaway 1 day ago||
Reminder that the Recommended Daily Allowance of Vitamin D found on all the labels (800 IU) is mistakenly too low, by a factor of 10x, due to a maths error (should be 8000 IU). It has not been corrected yet. Source: https://pmc.ncbi.nlm.nih.gov/articles/PMC5541280/
xwowsersx 1 day ago||
Supplementing with vitamin D is honestly one of the easiest things you can do... it's cheap, available everywhere, and makes a real difference. Just make sure you're also taking magnesium citrate (or another good form of magnesium) with it, since your body needs magnesium to properly use vit D
Etheryte 1 day ago||
An even better option is to go to your GP and have them run your bloodwork. It's cheap, depending on where you're from it might even be free, and you don't have to guess or randomly pick supplements you read about online. Most people on HN will live to a very high age, there's no reason to take random gambles on what you do to your body.
xwowsersx 23 hours ago||
For sure, you're essentially flying blind without bloodwork. I get a full panel at least 3x/year.
johnisgood 1 day ago||
And K2.
As for magnesium, I would go with magnesium glycinate or magnesium threonate.
xwowsersx 23 hours ago||
Absolutely. And you're totally right about magnesium glycinate. That's what I take. I don't know why I said citrate.
hinkley 1 day ago||
I was pretty sure we already knew vitamin D deficits dampen the immune system.
kraig911 1 day ago||
I wonder if adding zinc on top of this would do.
IAmBroom 1 day ago|
Would do...? Zinc taken the first day of symptoms may reduce the duration of a cold by a day on average. It's probably useful, but not certain.
Be sure to take zinc with meals, or your stomach may hate you.
Aldipower 1 day ago||
3-4 years ago this submission would be flagged in seconds just because of the word Vitamin D.
oldestofsports 1 day ago||
Breaking news! Water proven to clench thirst among those who are thirsty!
pewpewp 1 day ago|
Interesting how your government did not mention Vitamin D during the COVID scare.