Not from this article, but other publicaciones suggest that the optimal level is 32 ng/ml.
People who have a level of 50 ng/ml or higher have more kidney stones.
Vitamin D blood levels just over 32 ng/mL are not directly linked to a higher risk of kidney stones in the general population, according to current evidence.
Vitamin D, Calcium, and Kidney Stone Formation
• Vitamin D increases intestinal calcium absorption, and high levels may theoretically raise blood and urinary calcium, a known risk factor for calcium kidney stones.
• However, most studies show that typical supplementation or blood levels just above 32 ng/mL do not significantly increase urine calcium or kidney stone risk in healthy individuals.
• Doses that achieve serum levels over 32 ng/mL, which are within the normal range for sufficiency, are not associated with increased kidney stone formation unless accompanied by excessive calcium intake or underlying conditions like hypercalciuria or kidney stone history.
Study Findings and Clinical Practice
• Large cohort studies and randomized trials found no significant association between vitamin D supplementation (even up to 4000 IU daily) and kidney stone formation in people without prior stones or hypercalciuria.
• Some individuals, especially those with a history of kidney stones or pre-existing hypercalciuria, may be at higher risk when taking high doses of vitamin D, so clinical monitoring is recommended in these cases.
• Combined calcium and vitamin D supplements may increase kidney stone risk, but vitamin D alone shows little effect
Via Perplexity AI