One way kidney stones can form is when urine produced in the kidneys is overly concentrated with calcium or oxalate. ████████ ███████ ███████ ███ ████ ████████ ██████████ ██ ████████ ███ ██████████ ████ ███████ ████ ███████████ ███ ████ ██████████ ███████ █████ ███████ ███ ████ ██████ ███ ███████ ██ ██████████ ███ █████████ ██ ██████████ ███████ ███████
Too high a concentration of calcium in the kidneys can cause kidney stones. So why does consuming more calcium lower people’s chances of getting kidney stones?
The correct answer will describe an effect of increased calcium intake that has the potential to lower one’s chances of developing a kidney stone.
Which one of the following, ██ █████ ████ █████ ██ ███████ ███ ████████ ███████████ █████████ ██████
Laboratory studies on ███████ ████ ██████ ██████ ██████ ████ ████ ██████ ███ ██████████ ██████ ████ ███████ ███████████ ███ █████ ██ ███ █████
This just tells us that the same phenomenon occurs in lab animals, but it still doesn’t explain why, so isn't helpful in resolving the discrepancy.
Increasing dietary oxalate █████ ████████ ███████ ███████ ████ ███ ██████ ███ ███████ ██ ██████ █████ ███████████
The phenomenon in the stimulus occurs when calcium intake is increased rather than when it’s decreased, so this is irrelevant.
Kidney stone development ██ █████████ ███ ██████ ██ ██ █████████ ████████ ████ ███ ██████ ██ █████████ ██████████ ██ ███████ ███ ████████
This just describes another possible cause for kidney stones, but it doesn't explain how increasing calcium intake can reduce the chances of kidney stones.
Increasing calcium intake █████████ ███ ██████ ██ ███████ ██████████ ███████ ███ ███████████ █████ █████████ ███ ██████ ██ ██ ████████ ██ ███ ████████
If increasing calcium intake causes the calcium to be eliminated by the intestines, then the kidneys are less overloaded with calcium. This explains why increasing calcium intake lowers the chances of developing kidney stones.
Some kidney stones ███ ████████ ██ ████ ████ ██████ ████ █ ███████████ ██ ███████ ███ ████████
This just describes another type of kidney stones, but we need to figure out why increasing calcium intake reduces the chances of kidney stones. This doesn't help with that.
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