Preventing Dehydration During Cancer Treatment
Last Modified: December 4, 2014
The importance of fluids
During cancer treatment, it is very important that you be well hydrated. Water is needed to keep your body functioning. It is needed for regulating your temperature and for removing wastes and toxins. Two-thirds of your body is water. Even mild dehydration can cause some of the following symptoms:
- Dry mouth
- Feeling light headed
What you should do to avoid dehydration
You should have at least 64 ounces of fluid a day. You can do this by drinking:
- Eight, 8-ounce glasses or
- Six, 12-ounce glasses of fluid a day.
If you have a fever, diarrhea or vomiting you will need more fluids to replace fluids that are lost. Thirst is not always a good indicator of how well you are hydrated. Keep track of the fluids you drink to make sure you are getting enough fluids to stay hydrated.
Good sources of liquids to keep you hydrated
All food contains some fluid. Only those that are liquid at room temperature should be counted toward your goal of 64 ounces per day. The following is a list of foods and beverages that can be counted toward your fluid goal:
- Fruit or vegetable juice
- Soup and broth
- Ice cream
- Fruit ice
- Nutritional supplements, such as Boost or Ensure
- Hot chocolate
- Ice cubes and ice chips
* Drinks that contain caffeine will contribute to fluid loss. Use decaffeinated versions of these drinks instead.
If you do not like to drink plain water, try carbonated waters, flavored waters, add a slice of lemon or lime, or mix water with fruit juice.
If you have severe vomiting and can't keep fluids down, try sucking on ice cubes and ice chips, and taking small sips of fluids frequently. This will be better tolerated, than drinking 6 or 8 ounces at one time.
When to contact your care team
Even when following your care provider's advice, you may become dehydrated. If this occurs, your care provider may recommend IV fluids or other treatment for dehydration or the conditions causing dehydration. If you experience the following symptoms of dehydration, contact your care team immediately:
- Feeling very thirsty or thirst that doesn't stop when you drink.
- Less frequent urination.
- Dark-colored urine.
- A loss of more than 5% of body weight within one week.
- Muscle cramps.
- Increased fatigue.
Table to Help You Keep Track of Your Fluids
- 1 quart = 4 cups = 32 ounces = 960ml
- 1 pint = 2 cups = 16 ounces = 480 ml
- 1 cup = 8 ounces = 240 ml
- 1/2 cup = 4 ounces = 120 ml
- 1/4 cup = 2 ounces = 60 ml
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