Researchers out of the University of California, San Diego, have found that increasing levels of vitamin D don’t increase kidney stone risk.
In the past, researchers have speculated that vitamin D supplementation may increase risk of kidney stones. They have speculated this because vitamin D helps the body absorb calcium and maintain calcium levels in the blood. However, research to date has not been able to show consistently that supplementation leads to higher risk of kidney stones.
In this new study, researchers used data from GrassrootsHealth, to measure and follow just over 2,000 people over 19 months.
Over the study period, 13 participants reported developing kidney stones. Results showed no significant association between vitamin D and kidney stones.
The researchers did find a correlation with higher body mass index (BMI). Having a higher BMI increased kidney stone risk.
The researchers concluded, “Serum 25-hydroxyvitamin D level of 20 to 100 ng/ml has no significant association with kidney stone incidence.”
Nguyen, S. et. al. 25-Hydroxyvitamin D in the Range of 20 to 100 ng/mL and Incidence of Kidney Stones. American Journal of Public Health, 2013.