Caffeinated drinks and water loss

Question
Drinking 12 oz. of coffee or soda is like drinking how much water (in terms of nutritive water given to the body, equivilent effect, or something along those lines). I have seen lots of websites that say 1 cup of coffee plus one cup of water equals out to zero water, and other sites that say it may be more like a cup of coffee is like 30% of a cup of water. The rule of thumb of drinking the same amount of pure water as coffee or soda sounds good in the second case, but insufficient in the first case.

Answer
Hello David

If you take 6 cups of coffee a day totaling approximately 650 mg caffeine, you lose water but if you only take 3 cups, you will lose water within normal diuresis deviations depending on the foods you eat that day: more cucumber or watermelon - more you lose, lore salty foods - you lose less, etc.

"The scientific literature suggests that athletes and recreational enthusiasts will not incur detrimental fluid-electrolyte imbalances if they consume caffeinated beverages in moderation and eat a typical U.S. diet," concluded Dr Grandjean (Journal of the American Collegeo f Nutrition, 19, 591-600, 2000)

= TZ

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