Dietary Factors and the Risk of Incident Kidney Stones in Younger Women
It is funny how, for many years, patients who have had kidney stones were told to avoid calcium intake (both in food and supplemental). This has never really matched what we would assume from knowledge of physiology. Rather, an environment in the kidney that supports stone growth would be more important than the presence or absence of calcium. So, dietary calcium protects and supplements have no effect. Interestingly, sucrose definitely increased the risk of kidney stones.
Arch Intern Med — Abstracts: Curhan et al. 164 (8): 885 –