Español
Sign up for our email
OncoLink
  • Cancer Types

    Discover information about different types of cancer

      • Cancer Types
      • Blood Cancers Bone Cancers Brain Tumors Breast Cancer Carcinoid & Neuroendocrine Tumors Endocrine System Cancers Gastrointestinal Cancers Gynecologic Cancers Head and Neck Cancers Lung Cancers Lymphomas Metastatic Cancer
      • Multiple Myeloma OncoLink Vet Pediatric Cancers Penile Cancer Pheochromocytoma Prostate Cancer Sarcomas Skin Cancers Testicular Cancer Thymoma & Thymic Carcinoma Thyroid Cancer Urinary Tract Cancers
  • Patients

    Learn about cancer, diagnosis, treatment, coping & survivorship

      • Cancer Treatment
      • Bone Marrow Transplants Cancer Medications Clinical Trials Complementary and Alternative Medicine Gene & Immunotherapy Getting Cancer Treatment? Start Here! Hormone Therapy Hospital Helpers Interventional Specialties Procedures & Diagnostic Tests Proton Therapy Radiation Surgery Targeted Therapies
      • Risk and Prevention
      • Diet, Alcohol and Cancer Environmental and Occupational Exposures (UV Exposure, Radon, Radiation) Exercise, Body Weight and Cancer Genetics & Family History Medications, Health History and Cancer Risk Prevention & Screening Sexual History & Human Papillomavirus (HPV) Smoking, Tobacco and Cancer Reduce My Risk Tool
      • Support
      • Support for Adolescents and Young Adults with Cancer Caregivers Coping With Cancer Coping With COVID-19 Creative Inspiration Exercise & Cancer Grief and Loss Hospice and Palliative Care Insurance, Legal, Employment & Financial Concerns Managing Practical and Emotional Concerns Nutrition and Cancer OncoPilot: Navigating the Cancer Journey Sexuality & Fertility Side Effects Survivorship OncoLife
  • Healthcare Professionals

    Find resources & tools for oncology healthcare professionals

      • Professional Resources
      • Build My Patient Treatment Binder Oncolife Survivorship Care Plan OncoLink Rx OncoLink Rx Regimen Printer Smart ALACC Care Plan CAncer Teaching Tool (CATT) Distress Screening Response Tools (DSRT) OncoLink University O-Pro: Portal for Oncology Professionals
      • Professional Services
      • Partner with OncoLink to Support Your Work OncoLink API OncoLink Oncology Social Work Learning Academy (OOSWLA) Trauma Informed Care (TIC) Penn Radiation Medicine Institute (PRMI)
  • Sign up for our email
  • Español
  1. Support
  2. Side Effects
  3. Gastrointestinal Side Effects
  4. Diarrhea

Diarrhea

Information about diarrhea and treatments, including tips for managing diarrhea with dietary changes.

find my

  • drugs
  • cancer

Diarrhea

Diarrhea can be caused by cancer treatments, disease, infections, anxiety, food, among others. Diarrhea can cause dehydration, low levels of nutrients in your body, weight loss, and fatigue. 

Low Fiber Diet for Diarrhea

A low fiber diet can help control diarrhea. This article goes over which foods to eat and which foods to stay away from, especially for those with cancer or who are getting cancer treatment.

Preventing Dehydration During Cancer Treatment

Cancer treatments can lead to dehydration in some cases. Water is essential for the body to function properly, so patients should try to maintain hydration. This article provides tips to avoid dehydration and ways to increase your fluid intake.

Diarrhea After Radiation

Radiation treatment can cause harm to healthy tissues in the area being treated. When the bowel is in the treatment area, this damage can lead to ongoing diarrhea, incontinence, and urgency.

Stay up to date with oncolink


Receive the latest resources and updates in your inbox.

OncoLink
  • About OncoLink
  • How to Partner
  • Mission Statement
  • OncoLink Editorial Board
  • Contact Information
  • Privacy Statement
  • Use of the OncoLink Site and Content
  • Giving to OncoLink

All content © 2026 Trustees of the University of Pennsylvania. All rights reserved.
  • Terms and Conditions
  • | Privacy Policy

OncoLink is designed for educational purposes only and is not engaged in rendering medical advice or professional services. The information provided through OncoLink should not be used for diagnosing or treating a health problem or a disease. It is not a substitute for professional care. If you have or suspect you may have a health problem or have questions or concerns about the medication that you have been prescribed, you should consult your health care provider.


Information Provided By: www.oncolink.org | © 2026 Trustees of The University of Pennsylvania