5 ms·

Reminder that the FDA recommended daily allowance of vitamin D is 10x lower than it was supposed to be, because of a math error, and they have never corrected i

by hammock 11mo ago

Reminder that the FDA recommended daily allowance of vitamin D is 10x lower than it was supposed to be, because of a math error, and they have never corrected it. https://pubmed.ncbi.nlm.nih.gov/28768407/ https://pubmed.ncbi.nlm.nih.gov/28768407/

OneMorePerson 11mo ago
Between the vitamin D error (this affected US and Europe and probably more places) and the sodium/blood pressure study that was misleading if not outright false, it's amazing how a few data points can become widespread advice without much verification and follow-up. I'm sure there's tons more cases that we don't even know about, not in the conspiracy sense, but more in the sense that there's some issues with how carefully these claims are validated before they get put out there as a rule to be followed.
- jeltz 11mo ago
  One of the big issues is the momentum. Even long after these misstakes have been found doctors still give advice based on the error.
  - hammock 11mo ago
    Doctors giving advice based on mistaken or otherwise bad data and outdated guidance is a pervasive problem
  - nrhrjrjrjtntbt 11mo ago
    Let alone meddling vested interests, e.g. with RDA for sugar.
- diydsp 11mo ago
  Those are two recommendations out of how many? And how many years? How many errors do police make? Actuaries? Security researchers?
  - vacuity 11mo ago
    Vitamin D and sodium are examples out of a couple core nutrients, and I could list other nutrients such as sugar or fat too. So the rate is not excellent. > How many errors do police make? Actuaries? Security researchers? They make plenty of mistakes too. What's your point?
rendaw 11mo ago
The abstract wasn't clear to me, but looking it up FDA recommends 20mcg = 800 IU, and the paper recommends 8000 IU. It seems like others are more conservative (7000 IU). I don't think I've ever seen the 20mcg rec, everywhere I've seen was something like 2000 (and that's what the supplements come as), but P appears correct. What was the math error that led to this? And I'm curious now how to get 8000 IU. Just take a bunch of pills all at once in the morning? The paper referenced Finland, which seems like a strong confirmation of safety, but the best information I could find was https://www.ruokavirasto.fi/en/foodstuffs/healthy-diet/national-nutrition-council/proposals-for-measures-and-statements/action-proposals-for-food-fortification/food-fortification-with-vitamin-d/ https://www.ruokavirasto.fi/en/foodstuffs/healthy-diet/natio... . What effective IU dose are people getting in Finland with these changes?
- hammock 11mo ago
  > I don't think I've ever seen the 20mcg rec The 20mcg rec (the wrong rec) is quite literally on every single nutrition label in America that has Vitamin D. Maybe you haven’t noticed it. Surely you’ve seen it if you’re in the U.S. https://www.fda.gov/food/nutrition-facts-label/daily-value-nutrition-and-supplement-facts-labels https://www.fda.gov/food/nutrition-facts-label/daily-value-n... > What was the math error that led to this? And I'm curious now how to get 8000 IU. Just take a bunch of pills all at once in the morning? Read the paper I posted. And it is easy to find 5000iu and 10000iu capsules at a drug store.
  - voisin 11mo ago
    > it is easy to find 5000iu and 10000iu capsules at a drug store Not in Canada!
    - hammock 11mo ago
      Good to know. Guess there are still a few good things about American healthcare system
- stavros 11mo ago
  What I don't understand is how it's possible for 90% of people to have a vitamin D deficiency, or whatever that crazy number was. Surely by that point it's just normal?
coldtrait 10mo ago
I remember this article about Vitamin D says nobody is certain whether it actually does anything: https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-fractures.html https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-fra...

by hammock 11mo ago

OneMorePerson 11mo ago

Between the vitamin D error (this affected US and Europe and probably more places) and the sodium/blood pressure study that was misleading if not outright false, it's amazing how a few data points can become widespread advice without much verification and follow-up. I'm sure there's tons more cases that we don't even know about, not in the conspiracy sense, but more in the sense that there's some issues with how carefully these claims are validated before they get put out there as a rule to be followed.

jeltz 11mo ago
One of the big issues is the momentum. Even long after these misstakes have been found doctors still give advice based on the error.
- hammock 11mo ago
  Doctors giving advice based on mistaken or otherwise bad data and outdated guidance is a pervasive problem
- nrhrjrjrjtntbt 11mo ago
  Let alone meddling vested interests, e.g. with RDA for sugar.
diydsp 11mo ago
Those are two recommendations out of how many? And how many years? How many errors do police make? Actuaries? Security researchers?
- vacuity 11mo ago
  Vitamin D and sodium are examples out of a couple core nutrients, and I could list other nutrients such as sugar or fat too. So the rate is not excellent. > How many errors do police make? Actuaries? Security researchers? They make plenty of mistakes too. What's your point?

rendaw 11mo ago

The abstract wasn't clear to me, but looking it up FDA recommends 20mcg = 800 IU, and the paper recommends 8000 IU. It seems like others are more conservative (7000 IU). I don't think I've ever seen the 20mcg rec, everywhere I've seen was something like 2000 (and that's what the supplements come as), but P appears correct. What was the math error that led to this? And I'm curious now how to get 8000 IU. Just take a bunch of pills all at once in the morning? The paper referenced Finland, which seems like a strong confirmation of safety, but the best information I could find was https://www.ruokavirasto.fi/en/foodstuffs/healthy-diet/national-nutrition-council/proposals-for-measures-and-statements/action-proposals-for-food-fortification/food-fortification-with-vitamin-d/ https://www.ruokavirasto.fi/en/foodstuffs/healthy-diet/natio... . What effective IU dose are people getting in Finland with these changes?

hammock 11mo ago
> I don't think I've ever seen the 20mcg rec The 20mcg rec (the wrong rec) is quite literally on every single nutrition label in America that has Vitamin D. Maybe you haven’t noticed it. Surely you’ve seen it if you’re in the U.S. https://www.fda.gov/food/nutrition-facts-label/daily-value-nutrition-and-supplement-facts-labels https://www.fda.gov/food/nutrition-facts-label/daily-value-n... > What was the math error that led to this? And I'm curious now how to get 8000 IU. Just take a bunch of pills all at once in the morning? Read the paper I posted. And it is easy to find 5000iu and 10000iu capsules at a drug store.
- voisin 11mo ago
  > it is easy to find 5000iu and 10000iu capsules at a drug store Not in Canada!
  - hammock 11mo ago
    Good to know. Guess there are still a few good things about American healthcare system
stavros 11mo ago
What I don't understand is how it's possible for 90% of people to have a vitamin D deficiency, or whatever that crazy number was. Surely by that point it's just normal?

coldtrait 10mo ago

I remember this article about Vitamin D says nobody is certain whether it actually does anything: https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-fractures.html https://www.nytimes.com/2022/07/27/health/vitamin-d-bone-fra...