18 Year Old With Low Vitamin D
My son's vitamin D 25 level has been increasingly low. (d25 was 16 and lowest normal value is 25) His Vitamin D 125 level is within normal ranges. His calcium is at the highest normal value. He aslo is showing a high bone turnover. Celiac disease has been ruled out and hyperparathyroid as well.
What other absorption problems for Vitamin D can be possible. And he is on 2000IU of Vitamin D a day, how dangerous is that for his Calcium levels being that they are at the highest normal value already?