Cloudy Urine? Here’s What It Means and When To Worry

Roma Kunde
Roma Kunde
March 13, 2025
5
min read
Technically reviewed by: 
Adele Morris
Cloudy Urine? Here’s What It Means and When To Worry
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Inside This Blog:

  • Temporary vs. Persistent Cloudiness in Urine
  • Cloudy vs. Foamy Urine: What’s the Difference?
  • When To Seek Medical Attention

Your urine’s appearance can reveal a lot about your health. If it looks cloudy or foggy, it might be due to factors like dehydration, diet, or supplements. But other times, it could be a warning of an infection, kidney issues, or even diabetes.

Cloudy urine during pregnancy could be a sign of hormonal fluctuations. But it can also indicate potential complications [1-2]. Paying attention to these changes can help you identify health concerns before it’s too late.

So how do you know when to ignore it and when to take action? 

Temporary vs. Persistent Cloudiness in Urine

Unlike normal urine, which is light or straw yellow and transparent, cloudy urine appears milky white to yellow. It can happen for various reasons. But to understand the meaning of cloudy pee in relation to your health, you must check whether it’s temporary or persistent [1-2].

Temporary cloudiness is usually harmless. For example, dehydration can make your urine appear hazy. Eating fruits and vegetables, but consuming less meat, grains, and cheese might do the same. Certain medications like laxatives and antibiotics and calcium or phosphate-rich vitamin supplements can also lead to foggy urine [1-2].

These factors increase your urine’s alkalinity or pH levels, making it look milky. But it clears up once you’re hydrated or your body processes the food, medicine, or supplement [1-2].

Pregnancy-related hormonal shifts can also cause temporary cloudiness in urine. It goes away as the body adjusts to the changes during pregnancy [1-2].

In contrast, persistent cloudiness can signal something more serious. Here are a few possible causes:

  1. Urinary tract infection (UTI): Cloudy urine accompanied by a burning sensation or frequent urges to pee could be a sign of a UTI [1-2].
  2. Sexually transmitted infections (STIs): STIs like chlamydia, gonorrhea, and vaginitis can cause murky-looking urine due to mucus discharge [1-2].
  3. Kidney issues: Cloudiness can also be a symptom of problems like kidney infections, kidney stones, or chronic kidney disease. When kidneys don’t function properly, they leak fats or waste into urine, causing haziness [1-2].
  4. Preeclampsia: Persistent cloudy urine when pregnant could indicate preeclampsia, a condition that affects blood pressure and cause complications for the mother and baby. Increased blood pressure can impair kidney function, causing protein leakage into urine, making it seem foggy [1, 3-4].
  5. Diabetes: If you have uncontrolled diabetes, high blood sugar can damage your kidneys, affecting how they filter glucose and protein from blood. As a result, excess sugar or proteins may leak into urine, making it cloudy or foamy [1-2, 5].

These signs along with cloudy urine are an indication of potential health issues. So, track changes, like foaminess, as they may point to other concerns. To better understand this, let’s look at the difference between cloudy and foamy urine.

Cloudy vs. Foamy Urine: What’s the Difference?

Cloudy and foamy urine may appear similar, but knowing their differences can help you understand your health better.

Cloudy Urine

Cloudy urine appears due to factors like mucus, bacteria, or alkaline foods, medicines, and phosphate-rich supplements. It can be a sign of mild issues, like dehydration or a recent meal. But if the cloudiness remains for a long time, it could indicate an infection or kidney problems [1-2].

Foamy Urine

Foamy urine can sometimes be harmless, especially when caused by dehydration or excess water intake. But persistent foamy urine can be a red flag [6].

If your pee is frothy or bubbly, it could be a sign of excess protein in urine. Kidney issues can cause proteins to enter urine, creating foam or bubbles. This condition, known as proteinuria, may be linked to kidney disease or diabetes [2, 6-7].

Foamy urine can also indicate a condition called lupus nephritis, where your immune cells to go against your kidney cells. This damages the kidneys and causing protein leakage in urine [8].

Did you know?

Proteinuria is also called albuminuria, because the protein albumin seeps into urine. Albumin, along with fats and cell fragments, interrupts the normal flow of urine. This traps air and forms bubbles in urine, leaving it foamy [2, 7].

If your urine looks cloudy or foamy, monitor its persistence and get it examined. Early detection of kidney problems can help protect your long-term health.

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When To Seek Medical Attention

Cloudy urine isn’t always a cause for concern. But if it comes with pain, a strong odor, frequent urination, or other signs, consult your doctor. These symptoms could signal a UTI, kidney problems, or underlying conditions that need attention [1-2].

Stay hydrated and look for urine changes to catch issues before they worsen. For this, you can use at-home monitoring kits, such as Diagnox’s Urinox-10. This FDA-approved urine test is quick and reliable to identify protein, blood, and glucose levels.

Diagnox also offers the Urinox-UTI Test kit, which detects white blood cells and nitrites in urine, which are telltale signs of infection. You can also check for protein in pee using the Urine Protein Test and detect problems early.

So, take charge of your health today with Diagnox’s at-home test kits because prevention starts with awareness.

Key Takeaways:

  1. Cloudy urine can be harmless. But if it persists, check for changes to understand what could be causing it.
  2. Your diet and supplements can affect urine appearance. Alkaline foods and phosphate-rich supplements might make your urine cloudy.
  3. Foamy urine often signals excess protein. Persistent foamy urine could be a sign of kidney issues.
  4. STIs like chlamydia and gonorrhea can cause cloudy urine. Keep an eye on other symptoms and reach out to your healthcare provider.
  5. Pregnancy can cause temporary cloudiness, but if it lasts, monitor it closely. Hormonal changes are normal, but look out for warning signs of preeclampsia.
References

[1] Cleveland Clinic Staff, “Cloudy Urine,” Cleveland Clinic, Available Online. [Accessed Mar. 1, 2025].

[2] D. Skrajnowska, and B. Bobrowska-Korczak, “The Effects of Diet, Dietary Supplements, Drugs and Exercise on Physical, Diagnostic Values of Urine Characteristics,” Nutrients, vol. 16, pp. 3141, Sep. 2024.

[3] C. R. V. Leal, H. Botezelli, J. F. D. C. Las Casas, A. C. Simões E Silva, and F. M. Reis, “Urinary biomarkers of preeclampsia: An update,” Adv. Clin. Chem., vol. 124, pp. 197-211, 2025.

[4] Preeclampsia Foundation Staff, “Cloudy Urine,” Preeclampsia Foundation, Available Online. [Accessed Mar. 1, 2025].

[5] National Kidney Foundation Staff, “Diabetes and Kidney Disease (Stages 1-4),” National Kidney Foundation, Available Online. [Accessed Mar. 1, 2025].

[6] Cleveland Clinic Staff, “Foamy Urine,” Cleveland Clinic, Available Online. [Accessed Mar. 1, 2025].

[7] Z. J. Khitan and R. J. Glassock, “Foamy Urine: Is This a Sign of Kidney Disease?Clin. J. Am. Soc. Nephrol., vol. 14, pp. 1664-1666, Oct. 2019.

[8] Mayo Clinic Staff, “Lupus Nephritis,” Mayo Clinic, Available Online. [Accessed Mar. 1, 2025].

About the Author
Roma Kunde

Roma Kunde is a freelance content writer with a biotechnology and medical background. She has completed her B. Tech in Biotechnology and has a certificate in Clinical Research. She has 6 years of writing and editing experience in fields such as biomedical research, food/lifestyle, website content, marketing, and NGO services. She has written blog articles for websites related to construction chemicals, current affairs, marketing, medicine, and cosmetics.

About the Reviewer
This blog was
Technically reviewed by: 
Adele Morris

Adele Morris served as the editor and proofreader of this blog, displaying her exceptional editorial skills and expertise in the field.

The blog was also reviewed by the Diagnox content team. Diagnox Staff consists of a multidisciplinary team of scientists, content writers, and healthcare professionals with an expertise to create and review high-quality, informative, accurate, and easy-to-understand content for both professionals and everyday readers. Our staff follows strict guidelines to ensure the credibility and authenticity of the information, reviewing them independently and verifying them by various scientific and technical sources to ensure accuracy. Our review team believes in delivering knowledge free from bias to improve public health and well-being.

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