If your urine smells stronger than usual, you may be concerned that something is wrong with your body. The smell can easily change depending on the amount of water you drink and the food you eat that day.
In particular, during times when you sweat a lot, your urine becomes more concentrated and the smell also becomes stronger. However, if this continues even after drinking enough water, and if the color or urination habits have also changed, other reasons should be considered.
When it's a matter of concentration
Urine is mostly water mixed with waste products. If you drink less water or sweat a lot due to exercise and heat, the proportion of water decreases and the concentration increases.
At this time, the color may appear dark yellow, and the smell may also become stronger. Coffee, certain foods, and vitamin supplements also affect the color and smell. If it has suddenly changed, you can start by checking the amount of water you have drunk, what you have eaten, and any medications you are taking in the past few days.
If infection is suspected
If you have a stronger smell, frequent urination, and stinging or pain when urinating, you should check for a urinary tract infection. You may also experience symptoms such as not feeling refreshed after urinating, or suddenly feeling an urgent need to urinate that is difficult to hold back.
If the infection spreads up to the bladder, you may experience fever, chills, and flank pain. However, you cannot make a judgment based on smell alone, so you should consider accompanying symptoms and tests together.
Relationship with blood sugar
If your blood sugar is high, sugar may be excreted in your urine, which can change the smell. However, you cannot determine your blood sugar status by smell alone.
If your urine output has increased significantly, you still feel thirsty even after drinking water, you are losing weight, and you feel lethargic, then it is time to check your blood sugar. If your fasting blood sugar or glycated hemoglobin showed a mark in your check-up, it is good to look at it along with your current symptoms.
How to check
If the changes persist for more than a few days, a urine test will confirm it. It checks for blood, protein, or sugar in the urine, and if an infection is suspected, white blood cells and bacteria are also checked.
If necessary, a blood test will further check blood sugar and kidney function. If your urine is red or cloudy along with the smell, and you experience pain or fever when urinating, it is best not to delay seeking medical attention.
Reviewed by: Dr. Kim Seonhoo · Subspecialist in Gastroenterology, Detailed Specialist in Gastrointestinal Endoscopy Last reviewed 2026-09-02
This article is intended to provide general health information, and the cause and necessary tests may vary depending on the individual's condition. If symptoms persist, please consult with a medical professional for confirmation.