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OK so the thesis of this piece is that you shouldn't give blanket advice about what dosage of vitamins to take. But if you Google it, you would immediately see

OK so the thesis of this piece is that you shouldn't give blanket advice about what dosage of vitamins to take. But if you Google it, you would immediately see that taking over 4,000 IU of vitamin D per day for extended periods can be toxic. So in this case the woman would have actually benefited from taking the blanket advice rather than taking the 'personalized' advice from her doctor; had she been taking only 1,000 IU per day, I doubt she would have had this issue.

devaboone 6y ago
Unfortunately there are a lot of places online that will recommend 5000 units a day or more. And at the store, one of the standard doses for Vit D is 5000 units. I have this dose in my medicine cabinet. And it's not a completely unreasonable dose. Shannon actually did need 5000 units daily - just not for five years. The problem is that no one knew to reconsider it, or look for elevated calcium.
- fossuser 6y ago
  Yeah and one of those places is definitely HN - I've seen crazy recommendations here when it comes to supplements/nutrition. I'd guess there will even be some in this thread.
- debacle 6y ago
  Many countries have higher safe dosage limits for vit D than the US.
baccheion 6y ago
Toxicity traces back to hypercalcemia. If serum calcium labs are still normal (helped along with added magnesium and vitamin K2), then there aren't any issues.
TheCapn 6y ago
Its my understanding that any vitamin that is "Fat Soluble" as Vitamin D is, will have a toxicity level. If you're ever looking up Vitamins, figuring you should supplement or not, look at whether its Fat Soluble, then start looking at what the safe dose is. Zinc is a very common one for people to overdose on because its super common in Cold Lozenges. For an Adult male, one resource I just googled says daily recommended dose is 15mg, or a safe upper dose of 25mg, but some lozenges will have 15mg in a single lozenge!
- TheRealSteel 6y ago
  I believe zinc overdose (possibly via copper deficiency) happened to me and caused my fatigue problem -- suddenly, about 5 hours after waking up, I would go from awake to overwhelmingly tired in about 10 or 15 minutes, and physically not be able to keep my eyes open. After an hour in bed I would drag myself back out but feel sluggish and useless the rest of the day. I stopped taking zinc and it got better pretty quickly. I can't prove it but I believe that's what it was.

devaboone 6y ago

Unfortunately there are a lot of places online that will recommend 5000 units a day or more. And at the store, one of the standard doses for Vit D is 5000 units. I have this dose in my medicine cabinet. And it's not a completely unreasonable dose. Shannon actually did need 5000 units daily - just not for five years. The problem is that no one knew to reconsider it, or look for elevated calcium.

fossuser 6y ago
Yeah and one of those places is definitely HN - I've seen crazy recommendations here when it comes to supplements/nutrition. I'd guess there will even be some in this thread.
debacle 6y ago
Many countries have higher safe dosage limits for vit D than the US.

baccheion 6y ago

Toxicity traces back to hypercalcemia. If serum calcium labs are still normal (helped along with added magnesium and vitamin K2), then there aren't any issues.

TheCapn 6y ago

Its my understanding that any vitamin that is "Fat Soluble" as Vitamin D is, will have a toxicity level. If you're ever looking up Vitamins, figuring you should supplement or not, look at whether its Fat Soluble, then start looking at what the safe dose is. Zinc is a very common one for people to overdose on because its super common in Cold Lozenges. For an Adult male, one resource I just googled says daily recommended dose is 15mg, or a safe upper dose of 25mg, but some lozenges will have 15mg in a single lozenge!

TheRealSteel 6y ago
I believe zinc overdose (possibly via copper deficiency) happened to me and caused my fatigue problem -- suddenly, about 5 hours after waking up, I would go from awake to overwhelmingly tired in about 10 or 15 minutes, and physically not be able to keep my eyes open. After an hour in bed I would drag myself back out but feel sluggish and useless the rest of the day. I stopped taking zinc and it got better pretty quickly. I can't prove it but I believe that's what it was.