Dear Vitamin D council:
I am a 36 year old male who have just succeeded in raising my vitamin D3 levels from 27,6 to 52,8 ng/ml after taking 8000 IU daily in supplements for two months (I live on 60 degrees north, so I don't get any vitamin D from the sun between September and May).
However, 52,8 ng/ml is slightly higher than where I want to be. I know this level is good from your recommendations, but I would prefer to hover around 46 ng/ml (since I have read research saying that this is the average level of traditional African peoples working outside, and since I am worried about going too high).
With this background, I have two questions for you:
1) If I stop taking supplements now, how long can I presume that it will take before my vitamin D is lowered from my current level of 52,8 ng/ml to 46 ng/ml (given that I currently get no vitamin D from the sun and that I get a maximum of 150 IU daily from food sources)?
2) When I have waited the time you advise me to wait (question 1), how many IUs a day would you recommend me to take as supplements in order to maintain my level at around 46 ng/ml (still maintaining that I get no vitamin D from the sun and that I get a maximum of 150 IU daily from other food sources)?
I would really appreciate your reply!
Thanks a lot,