why does my urine foam
Sometimes, urine can also foam up when itâs concentrated. Your urine will be more concentrated if you havenât had much water to drink and youâre dehydrated. Foamy urine can also indicate that you have too much of a protein, such as albumin, in your urine. The protein in your urine reacts with the air to create foam. Normally, your kidneys filter extra water and waste products out of your blood into your urine. Protein and other important substances that your body needs are too big to fit through the kidneysâ filters, so they stay in your bloodstream.