Kidney stones are a potential side effect of excessive vitamin D intake.

More Info: Ingesting excessive amounts of vitamin D increases the blood calcium levels, which could lead to heart rhythm abnormalities and confusion.  The increased calcium levels can also lead to the development of kidney stones.

What Is a Kidney Stone?

Kidney stones are crystallized deposits of minerals and acid salts that form inside the kidneys.  The stones form when the urine cannot dilute excess minerals.  Most stones are calcium, struvite, uric acid, or cystine stones.

What Cause of Kidney Stones?

Hypercalciuria is the cause of kidney stones in up to fifty percent of cases.  Hypercalciuria is a condition where the body absorbs excess calcium from foods.  The high calcium levels in the urine form into crystals in the kidneys.

Kidney stones can occur as a result of other disorders such as cystic kidney disease, hyperparathyroidism, renal tubular acidosis, cystinuria, hyperoxaluria, and hyperuricosuria.

Other Causes of Kidney Stones

Anything that places urine, minerals, and acids out of balance can cause kidney stones.  Other examples include excess vitamin D, urinary tract infection (UTI), and gout.

Substances that add increased calcium to the urine may also cause some to develop kidney stones such as diuretics and antacids with calcium.