Mild dehydration, urinary tract infections, and conditions that cause the formation of crystalline substances or excess protein in the urine are all causes of cloudy urine, according to MedicineNet. Conditions that cause blood in the urine may also cause urine cloudiness. Sexually transmitted diseases and vaginitis may also result in cloudy urine samples.
White blood cells, red blood cells, bacteria, sperm and yeast can also cause cloudy urine, notes WebMD. In addition, parasitic infections, including trichomoniasis, may cause urine cloudiness. Red blood cells in the urine often result from bladder or kidney injury, UTI systemic lupus, or kidney stones. White blood cells often indicate bladder tumors, UTIS, vaginal inflammation and kidney inflammation. Bacteria clouding the urine may come from UTI, parasites or yeast.
Normal urine is clear or has a yellow color, much like straw, advises MedicineNet. A common reason for cloudy urine is mild dehydration, which causes foamy or cloudy urine that goes away quickly and is no real cause for concern. Infections at any point in the urinary tract can cause foamy or cloudy urine due to the pus or blood in the urine. Conditions that cause blood in the urine also make it look cloudy, foamy or turbid.
Gonorrhea and other sexually transmitted infections may cause cloudy urine when vaginal discharge contaminates the urine and leaves it looking murky, advises MedicineNet. Yeast vaginitis and other types of vaginitis can have the same effect on urine, causing cloudiness.