Backed Up

Granted this is weird, but I have wondered for quite a while what – if anything – constipation has to do with Chronic Kidney Disease. Maybe my memory is faulty (Hello, brain fog, my old friend), but I don’t remember having this problem before CKD entered my life… or did I?

In my attempt to find out if there is a connection, I hit pay dirt on my first search.

“Chronic kidney disease (CKD) and end-stage renal disease (ESRD) are more likely to develop in individuals with constipation than in those with normal bowel movements, according to a new study published online in the Journal of the American Society of Nephrology.

More severe constipation, defined as using more than one laxative, was associated with increasing risks of CKD and its progression.”

You can read the entire Renal and Urology News article at https://www.renalandurologynews.com/chronic-kidney-disease-ckd/constipation-associated-with-ckd-esrd-risk/article/572659/.

Wait a minute. This is not quite as clear as I’d like it to be. For example, what exactly is constipation? The National Institute of Diabetes and Digestive and Kidney Diseases at https://www.niddk.nih.gov/health-information/digestive-diseases/constipation was of help here:

“Constipation is a condition in which you may have fewer than three bowel movements a week; stools that are hard, dry, or lumpy; stools that are difficult or painful to pass; or a feeling that not all stool has passed. You usually can take steps to prevent or relieve constipation.”

Well then, what’s severe constipation? A new site for me, HealthCCM at https://health.ccm.net/faq/267-acute-constipation defines severe or acute constipation as,

“Acute constipation is usually defined by a slowing of intestinal transit generating a decrease in bowel movements and the appearance of dehydration. The person will have difficulty defecating or may not be able to at all.”

This sounds downright painful, so let’s go back to my original query about how constipation and CKD relate to each other.

But first I want to share this very clear explanation of how constipation happens from Everyday Health at https://www.everydayhealth.com/constipation/guide/.

“The GI tract, which consists of a series of hollow organs stretching from your mouth to your anus, is responsible for digestion, nutrient absorption, and waste removal.

In your lower GI tract, your large intestine, or bowel — which includes your colon and rectum — absorbs water from your digested food, changing it from a liquid to a solid (stool).

Constipation occurs when digested food spends too much time in your colon.

Your colon absorbs too much water, making your stool hard and dry — and difficult for your rectal muscles to push out of your body.”

Keep in mind that diabetes is the number one cause of CKD as you read this. According to the Mayo Clinic at https://www.mayoclinic.org/diseases-conditions/constipation/symptoms-causes/syc-20354253

“Hormones help balance fluids in your body. Diseases and conditions that upset the balance of hormones may lead to constipation, including:

  • Diabetes
  • Overactive parathyroid gland (hyperparathyroidism)
  • Pregnancy
  • Underactive thyroid (hypothyroidism)”

Many of the sites I perused suggested drinking more water to avoid or correct constipation. But we’re CKD patients; our fluid intake (Well, mine, anyway) is restricted. I’m already drinking my maximum of 64 ounces a day. In the words of Laurel and Hardy’s Hardy, “Well, here’s another nice mess you’ve gotten me into!” It’s possible constipation contributed to my developing CKD and drinking more may help, but with CKD you’re limited to how much you can drink.

Another suggestion I ran into on many sites was increase your fruit and vegetable intake. Great, just great. I’m already at my maximum of three different fruits and three different vegetables – each of different serving sizes, mind you – daily.

Wikipedia at https://en.wikipedia.org/wiki/Constipation#Medications has a great deal of information about constipation. Remember though that anyone can edit any Wikipedia article at any time. Be that as it may, this sentence leaped out at me:

“Metabolic and endocrine problems which may lead to constipation include: hypercalcemiahypothyroidismhyperparathyroidismporphyriachronic kidney diseasepan-hypopituitarismdiabetes mellitus, and cystic fibrosis….”

Thank you, MedicineNet for reminding us that iron can cause constipation. How many of us (meaning CKD patients) are on iron tablets due to the anemia that CKD may cause? I realize some patients are even taking injections of synthetic iron to help with red blood production, something the kidneys are charged with and slow down on when they are in decline.

Apparently, another gift of aging can be constipation since your metabolic system slows down. That’s also what makes it so hard to lose weight once you reach a certain weight. I’m getting a lot of information here, but I’m still not clear as to how one may cause the other. Let’s search some more.

I think I just hit something. We already know that diabetes is the number one cause of CKD. Did you remember that high blood pressure is the second most usual cause of CKD? Take a look at this from Health at https://www.health.com/health/gallery/0,,20452199,00.html#inflammatory-bowel-disease-3:

“Constipation can be a side effect of some common drugs used to treat high blood pressure, such as calcium channel blockers and diuretics.

Diuretics, for instance, lower blood pressure by increasing urine output, which flushes water from your system. However, water is needed to keep stools soft and get them out of the body.”

Now we’re getting somewhere.

It gets even better. The American Association of Kidney Patients at https://aakp.org/dialysis/relieving-constipation/ not only offered more clarification, but offered a list of high fiber foods without going over most of our potassium and phosphorous limits. Fiber intake is considered another way to both avoid and help with constipation.

“Adults need 20-35 grams of fiber daily. However, for dialysis patients who have to limit their fluid intake, this may be too much since it is thought increased dietary fiber may require an increased fluid intake. Also, all patients are different so the amount of fiber needed to relieve constipation varies from person to person.

High Fiber Foods

Bran muffin                 ½ muffin

Brown rice (cooked)   ½ cup

Broccoli*                    ½ cup

Peach                          1 medium

Prunes*                       3

Prunes*                       3

Spaghetti (cooked)      ½ cup

Turnips*                      ¾ cup

(Each serving contains about 150mg potassium, 20-90mg phosphorus and 1 – 5.4 grams of fiber.) (*Items contains 2 or more grams of fiber per serving.)”

I’ve got the connection between constipation and CKD now; do you?

Until next week,

Keep living your life!

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2 CommentsLeave a comment

  1. Thank you for this info. I had absolutely no idea about this. I have suffered from IBS with constipation for over 20 years and the past few months its been at its worst and now I think I know why. Because of my CKD. Thanks again!

    • I didn’t know, either. That’s why I looked into this. I’m more than happy to share what I’ve discovered.


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