4. Fizzy or Foamy Urine

Bubbly, foamy or fizzy urine might be a sign of kidney stone disease, particularly in people who chronically suffer from the condition and have had it for quite some time. The foam suggests the presence of protein in the urine, which is normally reabsorbed by the body instead of being passed out with pee. Too much protein in the urine may indicate the beginnings of kidney damage which can be caused by stones which prevent the organs from functioning properly.