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Hydration and Bladder Health During NMIBC Treatment

  • Writer: Polygon Health Team
    Polygon Health Team
  • May 13, 2025
  • 2 min read

Updated: May 14, 2025

Non-muscle invasive bladder cancer (NMIBC) treatment can impact your bladder comfort and function. Here are evidence-based hydration strategies that may help manage symptoms while supporting your overall health during treatment.


Balanced Hydration Approaches


Finding your optimal intake:

  • Aim for approximately 1.5-2 liters (6-8 cups) of fluid daily, but adjust based on your specific needs and medical guidance

  • Consider spacing your fluid intake evenly throughout the day rather than consuming large volumes at once

  • Reduce fluid intake in the evening to minimize nighttime urination disruptions


Quality of fluids matters:

  • Plain water is generally well-tolerated and beneficial

  • Some patients find alkaline water (pH >7) may reduce bladder irritation

  • Warm water or herbal teas can be soothing alternatives


Potential Bladder Irritants to Consider


Many patients undergoing NMIBC treatment report increased sensitivity to certain substances:


Common dietary irritants:

  • Caffeine (coffee, tea, some sodas)

  • Alcohol

  • Acidic foods and beverages (citrus, tomatoes)

  • Artificial sweeteners

  • Spicy foods

  • Carbonated drinks


Individual tolerance varies significantly. Consider tracking your consumption and symptoms to identify personal triggers.


Supportive Nutrition Practices


Anti-inflammatory foods that may help:

  • Berries (blueberries, strawberries)

  • Fatty fish rich in omega-3s

  • Leafy greens

  • Whole grains

  • Nuts and seeds


Bladder-friendly fruits:

  • Pears

  • Watermelon

  • Bananas

  • Apples (non-citrus fruits generally)


Managing Treatment Side Effects


During BCG therapy or chemotherapy:

  • Increase fluid intake before and after treatment (follow medical guidance)

  • Some patients find temporary relief by adjusting water temperature

  • Monitor and report changes in urination patterns to your healthcare team


Sources


  1. Bladder Cancer Advocacy Network. (2023). "Living with Bladder Cancer: Nutrition and Hydration." BCAN Patient Resources.

  2. American Urological Association. (2022). "Non-Muscle Invasive Bladder Cancer: Treatment Guidelines."

  3. National Cancer Institute. (2023). "Bladder Cancer Treatment (PDQ®)–Patient Version."

  4. European Association of Urology. (2024). "Guidelines on Non-muscle-invasive Bladder Cancer."

  5. Interstitial Cystitis Association. (2023). "Diet and IC." [Relevant for bladder-friendly dietary approaches]


Note: Always consult with your healthcare provider about specific hydration needs during your treatment journey. These suggestions are general and may need modification based on your individual medical situation.



Check out our Bladder Cancer Patient Connect resources:


 
 
 

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