Vitamin D plays an essential role in bone health, calcium absorption and normal immune function.
For people who are deficient, vitamin D supplements can be useful—and sometimes medically necessary.
But there is an important detail many people overlook:
More vitamin D isn’t always better.
Taking excessively high doses of vitamin D supplements can cause vitamin D toxicity, also known as hypervitaminosis D.
Although this condition is uncommon, it can become serious because excessive vitamin D may cause calcium to build up in the bloodstream—a condition called hypercalcemia.
Here are four
