of vitamin D toxicity. ([ODs][2])
## 4. Kidney Stones or Kidney Problems
One of the more serious consequences of excessive vitamin D is kidney damage.
High calcium levels can contribute to:
* Kidney stones
* Kidney pain
* Reduced kidney function
* In severe cases, kidney failure
Mayo Clinic specifically notes that vitamin D toxicity can lead to kidney stones and kidney trouble. ([Mayo Clinic][1])
## How Much Vitamin D Is Too Much?
