During cancer treatments, how much water should I drink each day?

Expert Answers

DrLisaSchwartz (Physician - Oncology - Radiation (Verified) ) - 04 / 09 / 2012

There are some situations in which a cancer patient may want to be sure to drink more water than usual. Some of these situations would include having nausea or diarrhea during treatment (these can lead to dehydration), receiving treatment that makes it difficult to swallow, or getting a chemotherapy that is potentially toxic to the kidneys. The question remains, how much water is enough? That can depend on a lot of factors (physical activity, humidity in the environment, amount of perspiration) and can vary from one individual to another. The Institute of Medicine recommends about 13 cups for men and 9 cups for women as a general guideline. Logic would dictate that you certainly need enough to prevent dehydration. Some of the symptoms of dehydration include fatigue, headache, lightheadedness, dry mouth and skin, decreased urination, constipation, and of course thirst.
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