From Our 2013 Archives
Study: Vitamin D Supplements May Not Raise Risk for Kidney Stones
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Taking vitamin D does not increase the risk for kidney stones, the study found. People's age, gender and weight, however, may play a role in developing the condition.
"Our results may lessen concerns by individuals about taking vitamin D supplements, as no link was shown between such supplementation and an increased risk for kidney stones," study leader Cedric Garland, of the University of California, San Diego School of Medicine, said in a university news release.
The new study used data on more than 2,000 adults of all ages. After following the participants for 19 months, researchers found that only 13 people reported being diagnosed with a kidney stone during that time.
The study, which appears Oct. 17 in the American Journal of Public Health, did show that being older or having a higher body-mass index (BMI) were both risk factors for this condition. BMI is a measurement of body fat based on height and weight.
Men also are at greater risk for kidney stones than women, the study found. But vitamin D users are not, it suggested.
"Mounting evidence indicates that a vitamin D serum level in the therapeutic range of 40 to 50 [nanograms per milliliter] is needed for substantial reduction in risk of many diseases, including breast and colorectal cancer," said Garland, an adjunct professor with the division of epidemiology in the department of family and preventive medicine.
Garland added that supplements typically are needed to achieve this blood level of vitamin D. People with a higher BMI need more vitamin D to gain its health benefits, he said.
-- Mary Elizabeth Dallas
SOURCE: University of California, San Diego, Health Sciences, news release, Oct. 17, 2013
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