
The odour of urine is influenced by various factors, including diet, hydration levels, and underlying health conditions. While cheese is not directly mentioned as a cause of foul-smelling urine, dairy products in general can contribute to changes in urine odour. Additionally, certain foods, such as asparagus, eggs, and meat, are known to alter the smell of urine due to the presence of specific chemical compounds. Dehydration can also lead to stronger-smelling urine as the concentration of chemicals increases. Furthermore, underlying health conditions like urinary tract infections (UTIs), diabetes, and genetic disorders can also affect urine odour. In summary, while cheese may not be specifically linked to bad-smelling urine, dietary choices and health conditions play a significant role in the odour of urine.
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Dehydration
I did not find any information on whether cheese causes bad-smelling urine. However, I did find that dehydration is a common cause of foul-smelling urine.
Drinking 60-80 ounces of fluid a day is recommended for most adults. This can include any type of fluid, such as milk, tea, coffee, juice, and even water from food. However, it is important to note that some health conditions may require fluid restriction, so always follow a doctor's recommendations.
If you suspect dehydration is causing your urine to smell, increase your water intake for 24 hours. If the smell persists or is accompanied by additional symptoms, contact your doctor.
Other Causes of Foul-Smelling Urine
While dehydration is the primary cause, other factors can also contribute:
- Diet: Foods like asparagus, garlic, onions, and fish can cause distinctive odours in urine due to the breakdown of certain compounds.
- Medications: Certain medications, such as sulfa drugs and diabetes medications, can impact urine odour.
- Vitamins: Prenatal vitamins and vitamin supplements containing B-6, B, or D can change the smell of urine.
- Medical Conditions: Uncontrolled diabetes, bacterial infections, UTIs, kidney or liver problems, and genetic conditions can all affect urine odour.
- Stress: Emotional stress can also be a factor in urine smell changes.
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Genetic conditions
While cheese is not explicitly mentioned as a cause of bad-smelling urine, certain foods are known to be associated with a distinct odour. For example, asparagus, eggs, dairy, and meat are all known to cause a change in the smell of urine. This is because they contain certain compounds that are carried into the urine, resulting in a stronger scent.
However, there are other factors beyond diet that can cause urine to smell bad. Dehydration, for instance, can lead to a stronger odour due to the increased concentration of chemicals in the urine.
Additionally, certain health conditions can also be the cause. For example, unmanaged diabetes can affect urine odour, with too much sugar causing a fruity smell, and diabetic ketoacidosis resulting in a sour smell. Liver and kidney problems can also cause changes in urine odour, with liver problems potentially causing a strong, musty smell.
Phenylketonuria
Phenylketonuria (PKU) is a genetic disorder that affects the body's ability to process the amino acid phenylalanine. If left untreated, PKU can lead to a buildup of phenylalanine in the body, which can be excreted in the urine, causing a strong odour.
Maple Syrup Disease
Maple syrup disease, also known as branched-chain ketoaciduria, is a rare genetic disorder that affects the body's ability to process certain amino acids. This condition gets its name from the sweet, maple syrup-like odour of the urine, which is caused by the buildup of certain compounds in the body.
Isovaleric Acidosis
Isovaleric acidosis is a rare genetic disorder that affects the metabolism of the amino acid leucine. Individuals with this condition are unable to properly break down leucine, leading to a buildup of isovaleric acid in the body. This can cause a strong, unpleasant odour in the urine, as well as other bodily fluids.
Trimethylaminuria
Trimethylaminuria is a rare metabolic disorder that occurs when the body cannot break down trimethylamine, a chemical compound with a pungent odour. This compound is produced in the intestines during the digestion of certain foods, such as eggs, liver, legumes, and fish. Normally, an enzyme called FMO3 converts trimethylamine into an odourless molecule. However, in individuals with trimethylaminuria, a variant in the FMO3 gene reduces the activity of this enzyme, leading to a buildup of trimethylamine in the body. This results in a strong fishy odour in the urine, sweat, and breath.
It is important to note that while these genetic conditions can cause bad-smelling urine, they may also be accompanied by other symptoms and can interfere with daily life. If you suspect that you may have any of these conditions, it is important to consult a healthcare professional for a proper diagnosis and treatment plan.
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Bacterial infections
Urinary tract infections (UTIs) are a common cause of foul-smelling urine. UTIs occur when harmful bacteria proliferate in the urethra, bladder, or kidneys. Bacterial vaginosis, a vaginal infection, can also cause a distinct fishy odour in urine, particularly after sexual intercourse. This occurs when there is an overgrowth of "bad" bacteria in the vagina, disrupting the balance of "good" and "bad" bacteria.
Other bacterial infections that can cause foul-smelling urine include E. coli, Citrobacter, Salmonella, Proteus, and prostatitis, an acute bacterial inflammation of the prostate gland in men. Dehydration can also cause urine to smell bad, as the ratio of water to chemicals in urine decreases, giving the chemicals a stronger chance of producing an odour.
In addition to bacterial infections, certain foods such as asparagus, eggs, dairy, meat, and fish can cause urine to have a distinct odour. This is due to the presence of choline, a substance associated with fishy body odour. Dehydration can also intensify the smell of urine as it becomes more concentrated and contains less water.
If you are experiencing foul-smelling urine, it is important to contact your healthcare provider to rule out any underlying bacterial infections or other health conditions. They can advise you on any necessary lifestyle changes or modifications to your treatment plan.
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Diabetes
Urine is made up of water and a small concentration of waste products. Urine typically has a subtle odor of its own, but this can change or fluctuate due to dietary factors, underlying medical conditions, or dehydration.
Some other causes of foul-smelling urine may include bacterial infections, such as E. coli, Citrobacter, Salmonella, Proteus, and urinary tract infections (UTIs). A UTI can cause bacteria from the infection to contaminate the urine, resulting in a distinct fishy smell. UTIs are more common in females than males. Bacterial vaginosis occurs when there is an imbalance of bacteria in the vagina, causing a fishy-smelling discharge that may be noticeable when urinating.
In addition to infections and medical conditions, certain foods can also cause urine to smell. For example, asparagus, fish, eggs, dairy, meat, garlic, and onions can all lead to foul-smelling urine due to the presence of certain chemical compounds. These compounds are carried into the urine and can affect its odor.
If you notice a persistent change in the smell of your urine, it is important to consult a healthcare professional. They can help identify any underlying causes and recommend appropriate treatment or lifestyle changes.
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Trimethylaminuria
TMAU can be primary or secondary. The genetic or primary form of this disorder is caused by changes (variants) in the FMO3 gene, which results in a deficiency of the FMO3 enzyme necessary for trimethylamine metabolism. The FMO3 gene provides instructions for making an enzyme that breaks down nitrogen-containing compounds from the diet, including trimethylamine. When the FMO3 enzyme is missing or its activity is reduced due to a mutation in the FMO3 gene, trimethylamine builds up in the body, causing the characteristic odour.
The secondary form of TMAU, not caused by genetic FMO3 deficiency, can emerge during adulthood due to certain medical conditions or precursor overload. This overload can occur when a person consumes large amounts of certain foods, such as eggs, liver, legumes, certain kinds of fish, and other foods containing carnitine, choline, or trimethylamine N-oxide. Treatment for TMAU may include avoiding certain foods, antibiotic administration, certain supplements, and special body soaps.
While TMAU is a rare disorder, it is important to note that urine odour can also be caused by various other factors, such as dietary factors (including cheese), dehydration, diabetes, bacterial infections, and certain medications. For example, asparagus is commonly associated with distinct urine odour, and a 2019 study found that the smell can last up to 7.2 hours after consumption. Additionally, certain medications for diabetes may affect urine odour due to the presence of sulfide, a compound linked to smelly urine.
If you are experiencing persistent or concerning urine odour, it is recommended to consult with a healthcare professional for proper diagnosis and guidance.
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Frequently asked questions
Eating cheese may cause a bad smell in urine. This is because cheese contains choline, a substance associated with fishy body odour.
Other causes of foul-smelling urine include dehydration, UTI, diabetes, liver or kidney problems, and certain medications.
In addition to cheese, other foods that can cause urine to smell fishy include eggs, dairy, and some meat.
Yes, dehydration can cause urine to smell stronger. This is because the ratio of water to chemicals is smaller when dehydrated, giving the chemicals a greater chance of producing an odour.
Yes, a UTI can cause bacteria from the infection to contaminate the urine, resulting in a distinct fishy smell.

























