How Does Caffeine Affect Urine Volume

Caffeine is a diuretic which means that it results in an increase in frequency of urination. It can also increase the urge to urinate if consumed in excessive amounts. Caffeine is thought to have a direct effect on the bladder’s smooth muscle.

Why does caffeine increase volume of urine?

This means that when you drink coffee, it causes the body to send signals to your pituitary gland that inhibits the production of the ADH hormone, which in turn causes the kidneys to not reabsorp water. This will increase the excretion of water via urine.

Does caffeine make your urine more concentrated?

This means that caffeine could make you urinate more, which can make drinking large amounts of caffeine dehydrating in some people. When you become dehydrated, your urine becomes more concentrated, which can make the smell of metabolites more noticeable.