Men who regularly take vitamin C supplements run a higher risk of developing kidney stones, according to a research. The study however didn’t observe an increased risk between kidney stones and multivitamins that which contain lower concentrations of vitamin C.
This research is based on data from a large population-based study of men from Västmanland and Örebro counties, who were monitored for 11 years. It was indicated by results of this study that men who take vitamin C supplements (typically 1000 mg per tablet) were twice as likely to develop kidney stones as men who do not take any dietary supplements.
In Sweden, the RDI for vitamin C is 75 mg and the vitamin C content of supplements is commonly 1,000 mg per tablet that is a considerably higher dose than which is obtained through food.
“As with all research, the results should be corroborated by other studies for us to be really sure,” says study leader Agneta Åkesson, Associate Professor at Karolinska Institutet’s Institute of Environmental Medicine. “Nor can we say anything about whether women run the same risk as men. But given that there are no well-documented benefits of taking high doses of vitamin C in the form of dietary supplements, the wisest thing might be not to take them at all, especially if you have suffered kidney stones previously.”
The study was carried out in association with urologists and nephrologists at Karolinska Institutet and Karolinska University Hospital.