Strong-smelling urine has several possible causes. One possibility, diabetes, is a serious medical concern. Other reasons can range from diet — specifically asparagus — to a urinary tract infection, which requires treatment.
Causes for strong urine odor include:
Urine concentration: It's normal for urine to have a stronger odor first thing in the morning. After a night's sleep, urine is more concentrated and odorous as well as brighter yellow in color.
Dehydration also increases urine concentration, causing stronger smelling urine. Let your person try drinking more water to see if the odor lessens. Hot weather or intense physical activities can contribute to dehydration too. Concentrated urine, without any other symptoms, generally isn't harmful.
Diet: For some people, eating asparagus causes urine to produce a sulfur-like smell. There is no health concerns associated with this odor. Read More