Kidney Stones after WLS
JP, Sorry for your Pain. I’ve missed that “pleasure” in life. They are more common than you’d think. One in 10 Americans will have at least one kidney stone some time in their life. Calcium Oxalate stones are the most common. (about 85% of all K-stones) And it’s counter-intuitive as to why they form. You would think it was from taking Calcium supplements, And with Hyper-dosing of Calcium Carbonate (Tums) That could occur, but more than likely The reason for increase among WLS Population Is not getting enough Calcium in combination with mild dehydration. So (For Prevention- those reading in) Have your doc stay on top of your Calcium levels, And drink your water!!
The largest prospective epidemiological study ever published on calcium and kidney stones, (New England Journal of Medicine, 1993), concluded that high calcium intake is associated with a decreased risk of symptomatic kidney stones. Perhaps just as importantly, the study, conducted among over 45,000 men, found that those individuals who consumed less than 850 mg of calcium per day were at an increased risk for a higher incidence of kidney stones. The authors concluded that calcium may actually have a protective effect by binding to oxalate in the gut and preventing its absorption in a form that leads to kidney stones. In another study calcium restriction led to an increase in absorption and excretion of oxalate in the urine in both normal subjects and patients with kidney stones. The authors, as well as many previous investigators, have also concluded that urinary oxalate appears to be more important than urinary calcium in the formation of stones. This conclusion was supported by a subsequent study on long-term calcium supplementation in premenopausal women which found no increase in stone formation. Calcium supplementation lowered both urinary oxalate and urinary phosphorous (also thought to contribute to the formation of stones) by binding both agents in the intestine. If high calcium intake is not the major factor contributing to increased risk of kidney stones, what is? The study published in the New England Journal of Medicine in 1993 found that higher fluid intake was associated with decreased stone formation. In a review of studies of dietary oxalate, the authors found that a decrease in dietary calcium intake led to greater urinary oxalate. Since less calcium was available to bind the oxalate into a non-absorbable form in the stomach and intestines, more oxalate was absorbed and then excreted through the urine, raising the risk for kidney stones. Bad news? Men are more likely than women to have them, And once you have one, the odds are you will develop them again In the future. An ounce of Prevention IS Worth a Pound of Cure. Best Wishes- Dx
Capricious; Impulsive, Semi-Predictable 
Kiney Stone??? Dont understand why the risks would higher.. Probably some medical question that someone better paid then I could answer.. But, I'll tell you i***** I lost a HUGE amount of weight and shortly after I had some stones.. (The worst pain of my life) I asked my doctor if there could have been a relationship between my weight loss and the stones.. He didnt really give me a furm answer.. But, did say that it could have something to do with it.
