How long can a brain tumor patient live without fluid?

The survival of a brain tumor patient without fluid depends on several factors, including the individual's overall health, the type and location of the tumor, and the extent of treatment. Generally, humans can survive only a few days to a week without water, as dehydration can lead to severe complications. In the context of a brain tumor, the situation may be even more critical due to the tumor's impact on neurological function and overall health. Therefore, medical intervention is crucial for managing hydration and other symptoms.