Thirsty for another cup

Caffeine has long been known as a diuretic; a drug that elevates the rate of bodily urine excretion and, consumed in excess, could lead to dehydration.

This has been the prevailing belief among medical experts for a number of years, although research has never confirmed this notion. According to the New York Tims, the results of a 2005 study, which were published in The International Journal of Sport Nutrition and Exercise Metabolism, revealed that caffeine has about the same diuretic effect as does water itself. In this particular study, 59 active adults were given either a caffeine capsule or a placebo. After 11 days, researchers did not find any significant differences in excreted electrolyte levels or urine volume.

As I've mentioned before, there have been an estimated 21,000 studies conducted on caffeine to determine if it is good for you or not. Clearly, this study is just one of many that leaves us still wondering.