When you are dehydrated does your kidneys stop working?

When you are dehydrated, your kidneys do not stop working entirely, but their function is significantly affected. Dehydration leads to reduced blood flow to the kidneys, prompting them to conserve water by concentrating urine and reducing its volume. If dehydration is severe and prolonged, it can impair kidney function and potentially lead to acute kidney injury. Therefore, while the kidneys may still function under dehydration, their efficiency and effectiveness are compromised.