Why does drinking tea make you wee more than usual?!
Why does drinking tea make you wee more than usual?
Answers:
"A cup of tea is 99.5% water.
It is a common misconception that tea should be avoided as a fluid replacement due to the diuretic action of the caffeine present. The diuretic effect of caffeine was originally based on acute studies in caffeine na?ve individuals. , , , , , , However research shows that a tolerance to caffeine develops. , , , , As such those who are not caffeine na?ve, i.e. regularly ingest caffeine, do not experience an increased urine output or altered conditions of hydration status after consuming caffeinated beverages. ,
Another consideration to take into account when investigating the relationship between caffeine and diuresis is the dose size of caffeine ingested. Where the dose relationship has been systematically investigated it is only at a high dose of 360 mg that a diuretic action is found.17 A recent systematic review of the accumulated evidence has shown that acute diuretic effects are observed generally in cases where at least 300 mg of caffeine is ingested. This finding suggests that tea does not have a diuretic effect unless the amount of tea consumed at one sitting contains more than 250-300mg of caffeine, equivalent to between 5 and 6 cups of tea."