Fluids like water cause urine pigments to become more diluted, so drinking a lot of water will cause your urine to become more clear. Urine typically changes based on how well-hydrated you are. ( 8)Ħ Unusual Signs of Dehydration You Should Know About A strong urine odor might also indicate a urinary tract infection, which pregnant women are at a higher risk for developing. ( 7) Once you become pregnant, pregnancy hormones can cause urine odor to change. Women who are ovulating don’t experience a change in urine odor, but hormones like estrogen and progesterone can give them a super sense of smell that makes them more sensitive to the odor. Trimethylaminuria is a condition in which the body cannot break down trimethylamine, a chemical compound with a strong odor akin to rotting eggs that can also occur in urine. Some people may have a genetic disorder that affects the scent of urine. If your urine smells fruity and you’ve been rushing to the bathroom more frequently, you may be at risk for type 2 diabetes. Foul-smelling urine can be a sign of a sexually transmitted disease, such as chlamydia or trichomoniasis. (4) A yeasty smell can indicate bacteria from a potential yeast infection. If your urine smells sweet or like ammonia, it might be an early sign of a urinary tract infection (UTI). These can include: ( 4)ĭehydration can cause a strong, ammonia-like odor, signaling that you need to rehydrate. Smelly urine can also indicate that you have a medical condition that needs attention. You’re also more likely to smell a change in your urine if you’re taking pills that contain vitamin B6. Medication, supplements, and vitamins can alter urine odor due to the artificial coatings on capsules. The food most commonly associated with changing the smell of your urine is asparagus eating the green stalks often results in “asparagus pee.” According to a study published in December 2016 in the journal BMJ, 40 percent of the population has a gene that allows them to smell a change in their urine after they eat asparagus. ( 1) What Can Cause Smelly Urine?įoods, medication, vitamins, and medical conditions can all cause your urine to smell. Urobilin is produced when your body breaks down older red blood cells. Yellow is the most common color of urine, caused by a biochemical waste product known as urobilin, or urochrome. Because urine is primarily made of water, it usually has only a slight odor and appears mildly yellow. Many people don’t pay attention to the color or smell of their urine unless they notice a sudden change. But sometimes smelly or discolored urine can indicate an underlying medical condition. Most changes in urine color and odor are temporary and can be attributed to certain foods, vitamins, and medicines.