Comment · Wed, November 21, 2012 · Ceretropic
Is it possible the diuretic effects of coffee can reduce the absorption of Piracetam+Choline or other noots?
Original post in this thread
Rosco_the_Dude · 7 points
I drink coffee or, whenever I go to my local tea/coffee shop, green tea. I know people generally like caffeine as a supplement to other nootropics, but I just had this thought about various caffeinated drinks' diuretic properties.
What are the chances that the drinks flush out some of the chemicals we want to keep in our systems?
What they were answering
Direct reply to the original post — see the thread post above.
u/MisterYouAreSoDumb · Ceretropic
Caffeine is a very weak diuretic in non-tolerant individuals. Those who take caffeine for more than 5 days at a time are no longer affected by the weak diuretic properties. The Food and Nutrition Board came out with a study in 2004 that addressed this issue. They found that there is not sufficient evidence that caffeine taken regularly has any effect on water retention.
http://www.nap.edu/openbook.php?record_id=10925&page=134
In aggregate, available data suggest that higher doses of caffeine (above 180 mg/day) have been shown to increase urinary output, perhaps transiently, and that this diuretic effect occurs within a short time period (Passmore et al., 1987). Whether or not caffeine ingestion at high amounts leads to a total body water deficit is uncertain (IOM, 2001a), although some have tried to develop a predictive model of water needs based on the limited data available (Stookey, 1999). Hence, unless additional evidence becomes available indicating cumulative total water deficits in individuals with habitual intakes of significant amounts of caffeine, caffeinated beverages appear to contribute to the daily total water intake similar to that contributed by noncaffeinated beverages.