My mom has polycystic kidney disease. Can diet changes help?

Hello,

Welcome to icliniq.com.

I read your query and can understand your concern.

I completely understand how concerning it must be for you to hear that your mother might have polycystic kidney disease (PKD). It is a difficult diagnosis to process, especially knowing that it can affect kidney function over time.

From what you have shared, her ultrasound findings and mildly elevated creatinine suggest she may have autosomal dominant polycystic kidney disease (ADPKD), which is the most common inherited form.

In this condition, fluid-filled cysts gradually enlarge within the kidneys, sometimes causing pain, high blood pressure, and eventually reduced kidney function.

The rate of progression, however, can vary widely between individuals. Many people maintain stable function for years, especially with proper care and monitoring.

High blood pressure (150/95) is very important to control, as it significantly influences how fast kidney function declines.

Medications such as ACE (angiotensin-converting enzyme) inhibitors or ARBs (angiotensin receptor blockers) are usually preferred, as they not only lower blood pressure but also help protect the kidneys.

Keeping blood pressure in the optimal range (around 120/80 mmHg) can make a meaningful difference in slowing the disease course.

Diet also plays a role in protecting kidney function. A low-salt diet, avoiding processed foods, maintaining good hydration, and moderating protein intake can help reduce strain on the kidneys.

Some studies suggest that limiting caffeine and avoiding unnecessary painkillers (like NSAIDs (non-steroidal anti-inflammatory drugs)) may also slow cyst growth.

Newer therapies like Tolvaptan, a vasopressin receptor antagonist, have been shown to slow cyst enlargement and kidney decline in certain patients. However, this requires close monitoring by a nephrologist due to possible liver side effects.

Regarding her flank pain, yes, that can occur due to cyst enlargement, stretching of the kidney capsule, or occasional bleeding into the cysts.

However, if the pain becomes severe, persistent, or is accompanied by fever or burning during urination, infection should be ruled out promptly, as infected cysts can be serious and need antibiotics.

For follow-up imaging, MRI (magnetic resonance imaging) can give a more detailed and accurate picture of cyst size and number, as well as total kidney volume, which helps track disease progress better than ultrasound.

Many nephrologists use MRI every few years for this purpose, especially if Tolvaptan or other specific therapies are being considered.

Since ADPKD is hereditary, you and your siblings should discuss screening with your doctor. Usually, an ultrasound is done first, and if findings are unclear or you are under 30 (when cysts may be too small to see yet), genetic testing can confirm the diagnosis if needed.

You are doing the right thing by being proactive and looking after your mother’s health. With regular nephrology follow-up, good blood pressure control, and lifestyle adjustments, many people with PKD live long, active lives before kidney failure ever develops.

I hope this helps.

Thank you and take care.

Regards.