Diuretics cause the kidneys to increase one’s urine output in 3 different ways. One way is by stopping the kidney from reabsorbing sodium. This means sodium will be excreted, and along with sodium so is water. The second way is by causing the body to excrete more sodium and chloride which causes an increased water output. The third way is by halting the sodium-potassium exchange. Consequently, this results in the excretion of sodium and potassium, as well as water. Common diuretics include coffee and alcohol.