Fishy-smelling urine often signals dehydration or a urinary tract infection (UTI) due to concentrated ammonia or bacterial overgrowth, but can also stem from certain foods, medications, or a rare metabolic disorder called Trimethylaminuria (TMAU). While drinking water might help simple cases, see a doctor if the odor persists or comes with pain, fever, or difficulty urinating, as it could indicate an infection needing antibiotics or another underlying issue.
Trimethylaminuria (trī-meth'il-am-i-nyūr'ē-ă) is a metabolic disorder that makes your sweat, breath, saliva and pee smell like rotten fish. Metabolic disorders affect how your body processes nutrients and enzymes. Healthcare providers may refer to this condition as TMAU or fish odor syndrome.
Here are some of the best home remedies for addressing fishy odor.
Kidney failure can make urine smell strongly of ammonia or have a fishy odor, often due to built-up waste products (amines) or infection, signaling concentrated urine from dehydration or kidney dysfunction. Other signs alongside bad-smelling urine include foamy, bloody, or cola-colored urine, swelling, fatigue, and changes in urination, all pointing to potential kidney issues that require a doctor's evaluation.
Foul-smelling urine may be due to bacteria. Sweet-smelling urine may be a sign of uncontrolled diabetes or a rare disease of metabolism. Liver disease and certain metabolic disorders may cause musty-smelling urine.
Urinary or bladder infection occurs more often in women because the urethra is shorter and closer to the anus. This means that smelly urine in women can often be caused by infections such as this. In addition to bacteria, viruses or fungi can also trigger an infection.
One sign that you possibly have diabetes or high blood sugar is urine that smells sweet or fruity. The sweetness comes from sugar in your urine and is a sign your body is trying to get rid of extra sugar in your blood.
Urinary Tract Infections
The bacteria that causes UTIs and bladder infections can cause a foul odor. Additionally, the medications used to treat these health issues can cause a smell that's often compared to rotten eggs or sulfur.
If your kidneys aren't working properly, you may notice one or more of the following signs:
Stay Hydrated
Water helps flush out toxins and waste products from your body, allowing your kidneys to function more efficiently. Aim to drink at least 8-10 glasses of water daily, and consider increasing your intake if you're active or live in a hot climate.
If you're concerned about an unusual vaginal odor or an odor that doesn't go away, see your health care provider. Your provider may perform a vaginal exam, especially if you also have itching, burning, irritation, discharge or other symptoms.
We get it — it's a common problem, but sometimes it can make you self-conscious (“wait, can other people smell that, too?!”) and affect your confidence. Inner thigh odor is caused by various factors, including excessive sweating, fungal infections, poor hygiene, and hormonal changes.
Drink cranberry juice. The acidity and antioxidants in cranberries, as well as citrus fruits, can help reduce vaginal odor by discouraging bacterial growth. Always consult with your healthcare provider if you think your vaginal scent or discharge is abnormal.
When to Visit the Doctor for Foul-Smelling Urine. Since the primary cause of foul-smelling urine is dehydration, Dr. Davis suggests increasing your water intake for 24 hours. If the smell persists, or you notice additional symptoms of pain, urgency or change in urine color, contact your doctor.
Bacterial vaginosis (BV): An infection that's caused by an imbalance in your vagina's flora. BV is responsible for the fishy smell most commonly associated with unpleasant vaginal odors. The fishy smell may be especially strong after sex.
Generally, earlier stages are known as 1 to 3. And as kidney disease progresses, you may notice the following symptoms. Nausea and vomiting, muscle cramps, loss of appetite, swelling via feet and ankles, dry, itchy skin, shortness of breath, trouble sleeping, urinating either too much or too little.
Kidney stones form in the kidneys. Symptoms may start as stones move into the ureters. The ureters are thin tubes that let urine pass from the kidneys to the bladder. Symptoms of kidney stones can include serious pain, upset stomach, vomiting, fever, chills and blood in the urine.
Water has no calories, sugar, or additives. It is, without a doubt, the best choice for kidney health. Kidneys use water to filter waste and keep the body working correctly. Drinking enough water also helps prevent kidney stones and urinary tract infections, which can worsen kidney problems.
You should worry about urine smell and see a doctor if it's persistent, accompanied by fever, pain/burning during urination, cloudy or bloody urine, or if it smells sweet (potential diabetes) or rotten (potential infection/kidney stones). While often temporary due to dehydration or food, persistent strong or unusual odors, especially with other symptoms, warrant medical attention to rule out UTIs, diabetes, or other conditions.
Bladder infection. Cystitis (irritation of the bladder) Dehydration — when the body doesn't have enough water and other fluids to work as it should. Diabetic ketoacidosis (in which the body has high levels of blood acids called ketones)
Cloudy, foul-smelling pee. Urinary incontinence. Frequent urination.
The main symptom of Trimethylaminuria is a strong odour that may be described as smelling like rotten fish, eggs, rubbish, or urine. The smell is usually noticeable in your sweat, urine, and breath. Females may also experience the smell from their vagina.
There are three types of ketone bodies present in the blood in ketosis: acetoacetate, beta-hydroxybutyrate, and acetone. Acetone is responsible for the fruity odor. People often describe the odor as smelling like nail polish remover, which often contains acetone as a solvent.
It's normal to have a small amount of sugar in your pee. But if urine (pee) test results show more than 0.25 mg/ml of glucose, that's glycosuria. Sometimes, glycosuria is a symptom of hyperglycemia (high blood sugar). But it can also happen in people with normal or low blood sugar levels.
Stick to drinking six to eight glasses of water a day or by having a glass of fruit juice that is noncitrus to dilute the odor. Cranberry juice is a great juice to reduce the acidity in your urine. If you cannot drink that much, ask your doctor if you can try taking deodorizing tablets or supplements.