Taking 1 gram of vitamin C a day (the amount found in many immune supplements such as Emergen-C's Immune+ Plus) can increase the risk of kidney stones by 40% in people with a history of stones. And for some men, taking a supplement containing just 250 mg of vitamin C a day may increase the risk of stones. According to the National Kidney Foundation, nearly 1 in 10 people in the United States develops a kidney stone during their lifetime. The risk is around 19% for men and 9% for women.
Interestingly, in an almost identical study in women, Curhan's team found no association between vitamin C intake and kidney stones. Although serum levels of 25-hydroxyvitamin D may be associated with kidney stones, at least in hypercalciuric patients, the question remains as to whether vitamin D supplementation may increase the risk of stone formation. There is increasing evidence that the administration of cholecalciferol or serum levels of 25-hydroxyvitamin D, in the higher ranges, can increase urinary calcium excretion and the formation of kidney stones in predisposed individuals or specific groups of patients. Small kidney stones may not cause any symptoms, and sometimes they go away on their own without much discomfort.
However, a person should control and limit the intake of these foods if they experience frequent kidney stones. The results provided evidence that kidney stone trainers had significantly higher levels of 25-hydroxyvitamin D than controls, in both European and Asian populations. These observations should be a warning, especially in clinical settings where the benefit of a vitamin D supplement has not been established. Kidney stones can get stuck in the kidney if they are too large to eliminate on their own, which can cause symptoms such as severe kidney pain, nausea and vomiting, explains Dr.
While the 12-month study did not include any cases of kidney stones, it did show a significant number of cases of elevated calcium levels in blood and urine. This study was conducted to examine the association between the intake of vitamins B6 and C and the risk of kidney stone formation in women. The intervention studies described below confirm whether the combined administration of calcium and cholecalciferol to humans can promote the formation of kidney stones. Other authors did not find a relationship between 25-hydroxyvitamin D and calcium excretion in the urine or prevalent kidney stone disease.
Although there is broad agreement that high levels of calcitriol increase calcium in the urine and the formation of kidney stones, it is still debated whether circulating serum levels of 25-hydroxyvitamin D or the widespread prescription of vitamin D could influence the formation of kidney stones. Randall plaques precede the formation of kidney stones and are now more commonly seen in children, raising concern about the possible role of vitamin D prescribed during childhood in the development of Randall plaque, which in turn causes stone formation years or decades later. Therefore, the widespread prescription of vitamin D supplements in the general population could increase the risk of kidney stone formation in patients prone to developing hypercalciuria. It should be noted that plaque can form in kidney tissue many years earlier than kidney stones, sometimes during childhood, and the composition of urine may have changed over time.