Let’s Talk About It: Managing Constipation and Diarrhea During Treatment

There are parts of treatment that people talk about often — fatigue, hair loss, scans, appointments.

And then there are the parts that don’t always make it into conversation.

Like digestion.

Constipation and diarrhea are incredibly common during treatment for serious illness, especially with chemotherapy, medications, and changes in activity or diet. But even though they’re common, they can still feel uncomfortable, frustrating, and sometimes isolating.

Let’s talk about it — practically, honestly, and without making it weird (poop emojis highly encouraged).

Why This Happens

Treatment affects your entire body, including your digestive system.

Certain medications, especially chemotherapy and pain medications, can slow down the bowel and lead to constipation. (American Cancer Society)
Other treatments, including chemotherapy, immunotherapy, and radiation, can speed things up and cause diarrhea. (Cancer Research UK)

On top of that, factors like:

• Lower activity levels
• Changes in diet
• Dehydration
• Stress

can all contribute to digestive changes.

In fact, constipation alone affects up to 60% of people with cancer at some point during treatment. (PMC)

So if this is happening to you, you are not alone.

When It’s Constipation

Constipation can feel like discomfort, bloating, or simply not going as often as your body is used to.

A few gentle strategies that may help:

• Hydration matters more than you think
  Drinking enough fluids helps keep stool softer and easier to pass. (Cancer.gov)
• Light movement can help stimulate your system
  Even a short walk can encourage your bowels to move. (Cancer.gov)
• Routine can make a difference
  Trying to go at the same time each day can help your body find a rhythm. (Cancer.gov)
• Be cautious with “quick fixes”
  Laxatives and supplements can help, but should always be discussed with your care team first. (American Cancer Society)

One important note: what works for one person may not work for another. Even fiber, often recommended, can sometimes make symptoms worse depending on your situation. (UCLA Health)

When It’s Diarrhea

Diarrhea can feel more urgent, unpredictable, and physically draining.

A few ways to support your body:

• Focus on staying hydrated
  Diarrhea can quickly lead to dehydration, so fluids and electrolytes are key. (Cancer Support Community)
• Eat smaller, simpler meals
  Your system may tolerate smaller portions better than large meals. (Cancer Support Community)
• Avoid irritants when possible
  Caffeine, alcohol, and very hot or cold foods can make symptoms worse. (Cancer Support Community)
• Pay attention to frequency
  If symptoms increase or become severe, it’s important to contact your care team. (Cancer Research UK)

When to Call Your Care Team

This part matters.

Reach out if you notice:

• No bowel movement for several days
• Severe abdominal pain
• Blood in stool
• Frequent or worsening diarrhea
• Signs of dehydration

These symptoms can become serious if left unmanaged, and your care team can help adjust medications or offer relief strategies. (American Cancer Society)

The Emotional Side No One Talks About

Digestive issues during treatment are not just physical.

They can feel:

• Embarrassing
• Frustrating
• Disruptive to daily life
• Hard to talk about

But this is part of your body responding to treatment. It’s not something you caused, and it’s not something you have to handle silently.

Making It Easier With Support

This is one of those areas where small, practical support can make a big difference.

Having easy-to-digest meals ready.
Having someone pick up supplies.
Not having to explain what you need over and over.

With Wellnest, you can organize that kind of support in one place — whether it’s meals that match your current needs, help with errands, or simply keeping your circle informed without repeating yourself.

Because when your body is already working hard to heal, even the smallest things matter.

A Gentle Reminder

There is nothing “minor” about something that affects your comfort every single day.

Taking care of your digestive health during treatment is not extra. It’s essential.

And like everything else in this process, it’s okay to ask for help, adjust as you go, and give yourself some grace along the way.