A new study has found that patients who undergo gastric bypass surgery increase their risk of developing kidney stones.
It was found that the excretion of a material called oxalate, found in urine, was significantly greater in participants who had gastric bypass than in those who had not had surgery. In addition, the amount of a chemical called citrate was low in many gastric bypass patients.
Citrate inhibits stone formation, while oxalate is almost always found in kidney stones.
It is not entirely clear why kidney stones form after gastric bypass, but the study shows that the majority of patients are at risk and complications can occur months or years after surgery.
The Journal of Urology
NOSC View
Yet another reason to have a gastric band or gastric balloon rather than bypass surgery.
