This study indicated that the adverse effect of increasing protein intake on calcium balance might relate to increased sulfate excretion from the catabolism of methionine and cystine.

• 补充牛磺酸对尿钙和钙平衡均无影响。 结论：高蛋白质摄入对钙平衡的负面影响与含硫氨基酸蛋氨酸和胱氨酸的分解产物硫酸根排出增加有关