Your urine can tell you a lot about your health and your habits. Urine is produced when blood passes through the kidneys, which filter out excess waste and water. This waste travels through tubes known as ureters and is stored in the bladder until you urinate.
Urine is roughly 95 percent water, and the rest is composed of thousands of compounds — both inorganic and organic — exiting the body.
Certain changes in your urine or urine habits, either during or after urination, may indicate that you have a medical condition. These signs often include:
- Dark or discolored urine
- Cloudy urine
- Blood in urine
- Frequency of urination
- Pain during urination
The presence of abnormal amounts of certain chemicals, such as proteins, sugars, ketones, and others, can also help your healthcare provider diagnose and monitor various medical conditions.
Common Questions & Answers
Diabetes, UTIs, and prostate issues might lead to frequent urination, but it’s not always a sign of a problem. Aging causes the bladder to lose some of its holding capacity. Large amounts of caffeine, a diuretic, may also be a cause.
What Do the Smell and Color of My Urine Tell Me?
Urine can range in odor for various reasons:
- Forty percent of people can smell a change in urine after they eat asparagus, sometimes called “asparagus pee.”
- Dehydration can produce an ammonia-like odor.
- Fruity-smelling urine can be a sign of type 2 diabetes.
- Foul-smelling urine can indicate bacteria from an infection.
- Clear urine is a sign of good hydration and potential overhydration.
- Pale yellow urine is an indicator of good hydration.
- Dark yellow urine is a sign to drink more fluids.
- Amber-colored urine can indicate dehydration.
- Orange urine can be caused by various foods or medications or be a sign of potential liver problems.
- Pink or red urine can be caused by foods or medications, or it can also be a sign of blood in the urine.
- Blue or green urine can be caused by medications or food dyes, but it can be a sign of bacteria or the rare condition known as blue diaper syndrome, too.
- Dark-brown urine can be a sign of liver or kidney problems.
- White urine can occur when your body contains excess calcium or phosphate, or it may indicate a urinary tract infection.
You should always consult with your doctor if you notice a sudden change in the color or odor of your urine.
Learn More About What the Smell and Color of Your Urine Mean
What Causes Urine to Be Cloudy?
Cloudy urine can be an indication of a variety of medical conditions:
Why Is There Blood in My Urine (Hematuria)?
Blood in urine, also known as hematuria, occurs when red blood cells leak from your urinary tract. Blood in urine can indicate that you have an undiagnosed or untreated medical condition.
- Bladder or kidney stones
- Kidney disease or injury
- Enlarged prostate
- Urinary tract infections
- Kidney or bladder cancer
If you notice or suspect blood in your urine, contact your healthcare provider as soon as possible. Your doctor will conduct a urinalysis and various other tests to determine the cause of the bleeding and any appropriate treatment.
What Does Painful or Burning Urination Mean?
- Inflammation of the vulvar region
- Inflammation of the urethra
- Sexually transmitted infections such as gonorrhea or chlamydia
- Prostate disease or prostate cancer
What Are the Possible Reasons for Frequent Urination?
Frequent urination can be disruptive to sleep, work, hobbies, and your mood.
Sometimes frequent urination is caused by increased fluid intake, especially drinking large amounts of caffeine or alcohol. Certain medications can also increase urine output, and diuretics — such as furosemide (Lasix), torsemide (Demadex), hydrochlorothiazide (Microzide), hydrochlorothiazide and triamterene (Dyazide), chlorthalidone (Hygroton), and spironolactone (Aldactone) — are a common culprit.
Poorly managed or uncontrolled type 1 or type 2 diabetes can also cause frequent urination, when increased blood sugar causes more fluid to escape the kidneys into the urine.
If you suffer from frequent urination, your doctor may conduct a urinalysis and other tests to determine the cause. Antibiotics are used to treat urinary infections, and there are special prescription medications used to treat an overactive bladder. Your doctor may also recommend that you reduce fluid intake before you go to bed.
How Does Your Urine Change When You’re Pregnant?
Urine changes throughout pregnancy, and monitoring your urine can help your doctor ensure both you and your baby are healthy.
Urinating more frequently can also be an early sign of pregnancy and will occur throughout the first trimester. Frequent urination returns during the third trimester when the growing fetus and uterus put increased pressure on the bladder.
Your doctor may conduct several urinalyses throughout pregnancy to test or monitor for conditions such as preeclampsia and gestational diabetes.
Learn More About How Your Urine Changes Throughout Pregnancy
Proteinuria: What Does Protein in the Urine Mean, and How Is It Tested?
Proteins serve many functions in the body, but when proteins escape into urine, it can be a sign of potential kidney problems.
If high levels of protein are detected multiple times, you may have kidney disease. People with diabetes and hypertension have a higher risk of developing kidney disease, so their urine may be analyzed regularly via urinalysis.
Protein in urine can also be a sign of preeclampsia in pregnant women.
Ketones in Urine: When and Why to Test for Ketones in Urine
Common symptoms that accompany high levels of ketones in urine include:
- High blood sugar
- Nausea or vomiting
- Fatigue
- Abdominal pain
- Fruity-smelling breath
- Flushed skin
You can test for ketones in urine at home or at your doctor’s office via a dipstick test. People with diabetes are advised to test for ketones more frequently when their blood glucose level is high or when they are sick with a cold or flu. If diabetes is left uncontrolled, people can develop diabetic ketoacidosis, which can lead to coma and even death.
Treatment for ketones in urine typically involves treating the underlying issue.
Leukocytes in Urine
Leukocytes are another name for white blood cells, which play an important role in fighting off infection in the body.
A small number of leukocytes in urine is considered normal, as old white blood cells will pass through the body. But if a high number of leukocytes are present in the urine, it can be a sign of potential damage to the kidneys, bladder, ureters, or urethra.
- Urinary tract infection
- Waiting too long to urinate
- Blockage of urinary tract
- Prostate issues
- Sexually transmitted infections
- Vaginitis
Leukocytes are typically measured during a urinalysis. Treatment for leukocytes in urine involves addressing whatever underlying medical condition is causing the higher levels.
Nitrites in Urine
Nitrates are inorganic compounds that normally pass through urine as waste. When nitrates become infected with bacteria, they become nitrites, which can be a sign of a urinary tract infection.
Levels of nitrites in urine are measured in a typical urinalysis test.
What Is a Urinalysis, and How Is It Done?
A urinalysis is a frequently used medical test that measures the presence of various substances in urine to detect medical problems and assess overall health.
A urinalysis involves collecting a clean urine sample via a specimen cup. The sample is then analyzed visually, with a dipstick test, and with a microscope.
During the visual exam, the color and clearness of the urine are examined.
How Long Do Marijuana, Alcohol, and Other Substances Stay in Urine?
Urine drug testing is often performed to test the presence of illegal, mind-altering, or performance-enhancing substances in the urine of employees, athletes, or people on probation or parole. How long a substance can be detected in your urine can depend on a number of factors:
- The composition of the drug
- How frequently you use it
- How much you use/ingest
- Age of user
- Health condition of user
- Quality of urine drug test
Urine Therapy: Is Drinking Your Own Pee Good for You?
Urine therapy, or urotherapy, is a type of alternative medicine in which people use or ingest their own urine for medicinal purposes. But there is no scientific evidence that urine therapy provides medicinal value.
When you drink urine, you ingest all the waste that your kidneys have filtered out of your body. Therefore, drinking urine can make your urine more concentrated with waste, causing dehydration and kidney damage. So drinking your urine is generally not recommended as a survival technique.
What Is Maple Syrup Urine Disease?
Maple syrup urine disease is a rare genetic disorder in which an infant’s body cannot properly process amino acids found in proteins. This causes urine to have a sweet-smelling odor, much like maple syrup. It affects roughly 1 in 185,000 infants.
The more serious form of the disease can be detected in newborns, and other times the onset of symptoms is delayed until late infancy or childhood.
Additional symptoms of maple syrup urine disease can include:
- Trouble feeding
- Lethargy
- Seizures
- Vomiting
Resources We Trust
Cleveland Clinic: Urinalysis
American Kidney Fund: Blood in Urine (Hematuria): Causes and Treatment
Mayo Clinic: Urine Odor
MedlinePlus: Kidney Stones
Editorial Sources and Fact-Checking
Everyday Health follows strict sourcing guidelines to ensure the accuracy of its content, outlined in our editorial policy. We use only trustworthy sources, including peer-reviewed studies, board-certified medical experts, patients with lived experience, and information from top institutions.
Sources
- LaFee S. 10 Colors That Suggest Urine Trouble. UC San Diego Health. April 21, 2014.
- Markt SC et al. Sniffing Out Significant “Pee Values”: Genome Wide Association Study of Asparagus Anosmia. BMJ. December 13, 2016.
- Urine Odor. Mayo Clinic. October 12, 2023.
- Urine Odor. MedlinePlus. July 8, 2023.
- What the Color of Your Pee Says About You. Cleveland Clinic. November 7, 2021.
- Urine — Abnormal Color. MedlinePlus. July 1, 2023.
- Dehydration: Symptoms and Causes. Mayo Clinic. October 14, 2021.
- What Are the Symptoms of Sexually Transmitted Diseases (STDs) or Sexually Transmitted Infections (STIs)? National Institutes of Health. January 31, 2017.
- Kidney Stones. MedlinePlus. December 8, 2016.
- Understanding Type 1 Diabetes. American Diabetes Association.
- Prostate Problems. National Institute on Aging. July 27, 2020.
- Vaginitis: Symptoms and Causes. Mayo Clinic. December 22, 2021.
- Blood in Urine (Hematuria): Causes and Treatment. American Kidney Fund. April 12, 2022.
- Blood in Urine (Hematuria): Symptoms and Causes. Mayo Clinic. January 7, 2023.
- Michels TC et al. Dysuria: Evaluation and Differential Diagnosis in Adults. American Family Physician. November 1, 2015.
- Urination — Painful. MedlinePlus. January 1, 2023.
- Dysuria, Infection vs. Chemical (Child). Mount Nittany Health. May 8, 2021.
- Dysuria (Painful Urination). Cleveland Clinic. December 8, 2020.
- Suni E. Nocturia: Causes and Treatments for Frequent Urination. Sleep Foundation. November 22, 2023.
- Maddukuri G. Excessive or Frequent Urination. Merck Manual. December 2022.
- What Are HCG Levels? American Pregnancy Association.
- Pregnancy Discomforts: When to Call the Doctor. Stanford Medicine. June 2019.
- Group B Strep Disease: Symptoms and Causes. Mayo Clinic. September 21, 2021.
- Protein in Urine (Proteinuria). Mayo Clinic. May 5, 2022.
- Protein in Urine (Proteinuria) Causes, Symptoms, Tests, and Treatments. American Kidney Fund. February 28, 2024.
- Ketones in Urine. MedlinePlus. August 3, 2022.
- Ketones Urine Test. UCSF Health. November 5, 2021.
- Simerville JA et al. Urinalysis: A Comprehensive Review. American Family Physician. March 15, 2005.
- Nitrites in Urine. MedlinePlus. August 3, 2022.
- Urinalysis. Cleveland Clinic. November 9, 2021.
- Urinalysis (Urine Test). National Kidney Foundation.
- Urinalysis. Mayo Clinic. October 24, 2023.
- Cederbaum AI. Alcohol Metabolism. Clinics in Liver Disease. November 2012.
- Cannabinoid Screen and Confirmation (Urine). University of Rochester Medical Center.
- Zezima K. States Move to Ban Fake Urine, a New Challenge for Drug Testing Amid an Abuse Epidemic. The Washington Post. April 7, 2018.
- Maple Syrup Urine Disease. MedlinePlus. April 24, 2023.
Sign up for our Healthy Living Newsletter!
By subscribing you agree to the Terms of Use and Privacy Policy.
The Latest in Urine
Scientists Finally Know Why Pee Is Yellow
Researchers have discovered the enzyme responsible for urine’s color. This finding could lead to new treatments for jaundice and other health issues.
By Becky Upham10 Medications That May Cause Increased Urination
There are several potential causes of frequent urination, and the meds you’re taking could be one of the culprits. Here is a list of medications that ...
By Jessica MigalaFrequent Urination: Symptoms, Causes and Treatment
Frequent urination can result from drinking too many fluids or can be caused by a UTI or disease affecting parts of the urinary tract, including the kidneys...
By Kathleen Smith, PhDWhat Causes Cloudy Urine in Women and Men?
Cloudy urine can be caused by a number of medical conditions, including dehydration, a urinary tract infection, sexually transmitted infections, kidney...
By Kathleen Smith, PhD, LPCWhat Does Burning or Painful Urination (Dysuria) Mean?
Pain or discomfort during urination (dysuria) may feel like burning, stinging, or itching and is often caused by a bacterial infection or inflammation...
By Kathleen Smith, PhD, LPCKetones in Urine: When and Why to Test for Them and What They Mean
Testing for ketones in urine is important in people with diabetes. Too much of the acid, created when the body burns fat for fuel, can lead to a serious...
By Kathleen Smith, PhD, LPCUrinalysis: Purposes, Types, Results
In a urinalysis, a clean urine sample is collected in a specimen cup and examined visually, microscopically, and with a dipstick test to diagnose and ...
By Kathleen Smith, PhD, LPCProtein in Urine (Proteinuria): Causes, Symptoms, Treatment
It’s normal for urine to have a little protein, but high levels of protein in urine, or proteinuria, can mean your kidneys aren’t properly filtering waste...
By Kathleen Smith, PhD, LPCWhat Causes Blood in Urine (Hematuria)?
Blood in urine, or hematuria, isn’t always serious but can be a sign of a number of health conditions, including those affecting the kidneys, bladder,...
By Kathleen Smith, PhD, LPCHow Does Your Urine Change When You’re Pregnant?
Being pregnant can change your urine. Here’s what’s normal and when your urine change may be a sign of trouble.
By Kathleen Smith, PhD, LPC