Tag: Vitamin d level

According to the National Institutes of Health (NIH), a serum vitamin D level of 20 ng/mL (50 nmol/L) or above is generally considered adequate for most people. However, pinpointing what is an ideal level of vitamin D is complicated by differing expert opinions and individual health factors.

According to the National Institutes of Health (NIH), serum 25(OH)D concentrations over 125 nmol/L (50 ng/mL) can be associated with adverse effects. Understanding what is considered a high vitamin D level is critical for preventing the rare but serious condition of vitamin D toxicity, known as hypervitaminosis D.