are coffee and tea diuretics
Answer Wiki. Caffeine is a diuretic to begin with and it's not possible to remove 100% of caffeine from tea. Having said that though you need larger doses of caffeine (6-8 cups of non decaf tea) to have a diuretic effect, and even this is for people to that don't intake a lot of caffeine, as your body develops a tolerance to it. Although tea and coffee contain many different substances the one on which most research focuses is caffeine. Even then there is so little research on the topic, that one of the most frequently mentioned studies was conducted way back in 1928 with a sample of just three people. The authors concluded that if the men consumed caffeine-laced water after a two month period of abstinence from both coffee and tea, the volume of their urine increased by 50%, but when they drank coffee regularly again they became inured to its diuretic effects. Do coffee and tea really dehydrate us? We’re told that tea and coffee dehydrates us, says Claudia Hammond, but what’s the evidence say? Every day people around the globe drink 1.6 billion cups of coffee and around twice as many cups of tea. They enjoy the taste and the fact that the caffeine wakes them up. This new study adds to the evidence, that among everyday coffee drinkers — say, those of us who routinely sip a cup of Joe or two at the office — the old wives' tale that coffee will lead to dehydration is really just that: a tale. Up to 90% of adult Americans consume caffeine every day. Most commonly, the caffeine is in coffee, tea, soft drinks, and chocolate. This adds up to an average of about 280 mg of caffeine per day, or the equivalent of about two cups of coffee. While caffeinated drinks may have a mild diuretic effect — meaning that they may cause the need to urinate — they don't appear to increase the risk of dehydration. Still, caffeinated drinks can cause headaches and insomnia in some people. Water is probably your best bet to stay hydrated. It's calorie–free, caffeine–free, inexpensive and readily available. Too much coffee can lead to jitters. And most experts agree that water or sports drinks are best for rehydrating after fluids have been depleted. Bottom line: A daily coffee habit won't lead to dehydration. But it's best to limit caffeine to moderate levels to steer clear of jitters and interruptions to sleep. And, oh, I should mention another new study that links caffeine to enhanced memory. Caffeine is a stimulant obtained from over 60 different types of plants worldwide. The scientific name for caffeine is 1,3,7-trimethylxanthine. Caffeine is considered to be the most commonly used psychoactive drug in the world. Coffee, soda, and tea are the most common sources of caffeine in the American diet. Discontinuation of regular caffeine use may produce withdrawal symptoms. The effects of caffeine persist for about three hours or less. Caffeine is found in some combination medications and weight control products. This means that decaffeinated tea may still contain some caffeine. Having said that though you need larger doses of caffeine (6-8 cups of non decaf tea) to have a diuretic effect, and even this is for people to that don't intake a lot of caffeine, as your body develops a tolerance to it.
Yes, caffeine is a diuretic and 6-8 cups of non decaf tea have diuretic effect.