A client with a history of calcium oxalate stones asks the nurse, "Can I continue taking vitamin C supplements?" Which response by the nurse is appropriate?

A. Excessive consumption of fruits and vegetables is not a primary cause of kidney stones. Some specific types of fruits and vegetables may contribute to stone formation, but it is not a general cause.

B. While genetic factors and family history can play a role in kidney stone formation, they are not the primary cause. The presence of minerals and salts in the urine is the main contributing factor.

C. An overactive bladder and frequent urination are not direct causes of kidney stone formation. They may be related to other urinary conditions but not to the formation of kidney stones.

D. This is the correct answer. Kidney stones are formed when certain minerals and salts in the urine form solid crystals that can clump together and grow into stones.

A. Limiting fluid intake to 1 liter per day is not recommended to prevent kidney stone formation. Adequate hydration is essential to

help prevent stone formation, as it helps dilute the urine and reduce the concentration of minerals that can lead to stone formation.

B. Decreasing dietary fiber intake is not a preventive measure for kidney stones. In fact, increasing dietary fiber intake can be beneficial for overall health.

C. Reducing calcium intake from all sources is not recommended to prevent kidney stones. In some cases, reducing dietary calcium intake can actually increase the risk of certain types of kidney stones.

D. This is the correct answer. Increasing citric acid intake can help prevent certain types of kidney stones, such as calcium oxalate stones. Citric acid helps to bind calcium in the urine, reducing the risk of stone formation. Citric acid can be found in citrus fruits and juices, and the nurse may advise the client to include more of these foods in their diet.