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I don't doubt you but I also wonder what you base this information on. In 2020 I test results for vitamin D was ridiculous low. I have been taking supplements

I don't doubt you but I also wonder what you base this information on. In 2020 I test results for vitamin D was ridiculous low. I have been taking supplements Jan 02, 2020 4:32 pm 25-Hydroxy Vitamin D Total 9 ng/mL 30-100 ng/mL I took me five years just to get to something close to the lowest end of normal. I was started on supplements in the in 2k IU and after poor progress boosted to 5k IU everyday to get to this level. I have been spending the past year on a sailboat instead of server room and look forward to seeing my test results.

Aurornis 9mo ago
My own experience getting a too-high result from supplementing 5K IU several times a week. When it came up, my doctor said I wasn't alone and that she's seeing a lot of people come back too high. > I took me five years just to get to something close to the lowest end of normal. Five years of supplementing to get up to 30ng/mL? Something is wrong. Could your supplements have not actually contained any real amount of Vitamin D? Certain malabsorption disorders also reduce Vitamin D absorption, for example.
- fragmede 9mo ago
  Don't forget your K2!
- seba_dos1 9mo ago
  Five years is unusually long, but your case is an outlier too. Usually it will take about 3 months to rise serum levels by ~30ng/mL on 5K IU daily, though there's plenty of individual variation of course. It's a low enough dose that if I had to choose between taking it blindly or not taking it at all if I was so depressed I couldn't get out of bed to get my levels tested, then I would do it blindly for a month or two without second thoughts.
- KellyCriterion 9mo ago
  Could also be a problem with the liver (e.g. too much alcohol), since if its stressed it cant convert the Vitamin D efficiently anymore unless the stress is gone.
  - detourdog 9mo ago
    Alcohol has never been something I enjoyed. I probably don't drink alcohol more then once a year.
tylerhou 9mo ago
A big problem is that the range that we have decided to call “normal” might not actually be a normal range. For example, 50% of surfers were found to have insufficient vitamin D in one study. https://pubmed.ncbi.nlm.nih.gov/17426097/ https://pubmed.ncbi.nlm.nih.gov/17426097/ There are at least two possible conclusions that you could draw. One conclusion is that we all need vitamin D supplementation regardless of how much sun exposure we receive. Another conclusion is that we might want to reevaluate what we consider the normal range to be, especially when we are deciding a range for a specific individual.
- relaxing 9mo ago
  No, the conclusion is surfers are conscious of their exposure and wear sun protection.

Aurornis 9mo ago

My own experience getting a too-high result from supplementing 5K IU several times a week. When it came up, my doctor said I wasn't alone and that she's seeing a lot of people come back too high. > I took me five years just to get to something close to the lowest end of normal. Five years of supplementing to get up to 30ng/mL? Something is wrong. Could your supplements have not actually contained any real amount of Vitamin D? Certain malabsorption disorders also reduce Vitamin D absorption, for example.

fragmede 9mo ago
Don't forget your K2!
seba_dos1 9mo ago
Five years is unusually long, but your case is an outlier too. Usually it will take about 3 months to rise serum levels by ~30ng/mL on 5K IU daily, though there's plenty of individual variation of course. It's a low enough dose that if I had to choose between taking it blindly or not taking it at all if I was so depressed I couldn't get out of bed to get my levels tested, then I would do it blindly for a month or two without second thoughts.
KellyCriterion 9mo ago
Could also be a problem with the liver (e.g. too much alcohol), since if its stressed it cant convert the Vitamin D efficiently anymore unless the stress is gone.
- detourdog 9mo ago
  Alcohol has never been something I enjoyed. I probably don't drink alcohol more then once a year.

tylerhou 9mo ago

A big problem is that the range that we have decided to call “normal” might not actually be a normal range. For example, 50% of surfers were found to have insufficient vitamin D in one study. https://pubmed.ncbi.nlm.nih.gov/17426097/ https://pubmed.ncbi.nlm.nih.gov/17426097/ There are at least two possible conclusions that you could draw. One conclusion is that we all need vitamin D supplementation regardless of how much sun exposure we receive. Another conclusion is that we might want to reevaluate what we consider the normal range to be, especially when we are deciding a range for a specific individual.

relaxing 9mo ago
No, the conclusion is surfers are conscious of their exposure and wear sun protection.