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Medical Forum / Diseases and Disorders / Hepatitis / June 2009Re: caffeine
Chuck wrote: > I did, and I learned that there's quite a controversy about the subject > since the release of an article by an author, hired by the Beverage > Institute for Health & Wellness (BIHW) of the Coca-Cola Company. So, I > consider the source and read between the lines. Then I consider that here, > on ash-c, we're talking about caffeine in combination with tx for hep c, > which (also) causes dehydration. Back to where we started: drink your > coffee, but water to compensate. Period. I did too but didn't find much controversy out there. In fact, the research I dug up provides evidence indicating caffeine does NOT have a dehydrating effect. Basing and stating an opinion of one lone study on an analysis of the author's industry connections and motives is not good science. I'd do more research and look for published studies in known and respected journals within the medical and nutrional communities. For example: A report appeared in in The International Journal of Sport Nutrition and Exercise Metabolism (June 2002) looked at studies comparing caffeine with water or placebo seldom found a statistical difference in urine volume, the author wrote. “In the 10 studies reviewed, consumption of a caffeinated beverage resulted in 0 to 84 percent retention of the initial volume ingested, whereas consumption of water resulted in 0 to 81 percent retention.” that means caffeine actually appears to be slightly LESS diuretic than water. Another study, in the same journal in 2005, involved scientists following 59 active adults over 11 days while controlling their caffeine intake. They were given caffeine in capsule form on some days and on other days were given a placebo. Researchers found no significant differences in levels of excreted electrolytes or urine volume. The American Journal of Physiology (Aug 2002) cites a University of Nebraska study that found no reason why caffeinated beverages should not be counted toward a daily fluid total. This article focused on the effects of moderate caffeine consumption (1-4 cups of coffee a day) and concluded: - Moderate caffeine consumption causes a mild diuresis very similar to that of water (water, when consumed in large volume, increases urine output). - There is no evidence that consumption of caffeinated beverages causes a fluid-electrolyte imbalance that is detrimental to health or exercise performance. - A person who regularly consumes caffeine has a higher tolerance to the diuretic effect. This article can be found at http://www.humankinetics.com/products/journals/ Thanks. No disrespect intended, btw--just interested in seeing a bit more objectivity in this discussion. Chuck wrote: > I did, and I learned that there's quite a controversy about the subject > since the release of an article by an author, hired by the Beverage [quoted text clipped - 3 lines] > which (also) causes dehydration. Back to where we started: drink your > coffee, but water to compensate. Period. I did too but didn't find much controversy out there. In fact, the research I dug up provides evidence indicating caffeine does NOT have a dehydrating effect. Basing and stating an opinion of one lone study on an analysis of the author's industry connections and motives is not good science. I'd do more research and look for published studies in known and respected journals within the medical and nutrional communities. For example: A report appeared in in The International Journal of Sport Nutrition and Exercise Metabolism (June 2002) looked at studies comparing caffeine with water or placebo seldom found a statistical difference in urine volume, the author wrote. “In the 10 studies reviewed, consumption of a caffeinated beverage resulted in 0 to 84 percent retention of the initial volume ingested, whereas consumption of water resulted in 0 to 81 percent retention.” that means caffeine actually appears to be slightly LESS diuretic than water. Another study, in the same journal in 2005, involved scientists following 59 active adults over 11 days while controlling their caffeine intake. They were given caffeine in capsule form on some days and on other days were given a placebo. Researchers found no significant differences in levels of excreted electrolytes or urine volume. The American Journal of Physiology (Aug 2002) cites a University of Nebraska study that found no reason why caffeinated beverages should not be counted toward a daily fluid total. This article focused on the effects of moderate caffeine consumption (1-4 cups of coffee a day) and concluded: - Moderate caffeine consumption causes a mild diuresis very similar to that of water (water, when consumed in large volume, increases urine output). - There is no evidence that consumption of caffeinated beverages causes a fluid-electrolyte imbalance that is detrimental to health or exercise performance. - A person who regularly consumes caffeine has a higher tolerance to the diuretic effect. This article can be found at http://www.humankinetics.com/products/journals/ Thanks. No disrespect intended, btw--just interested in seeing a bit more objectivity in this discussion. The Human Journal of Kinetics is not in my realm of credible medical references and, even if it was, its target readership (and thus its focus) is healhty, sports-minded individuals; not hepatitis patients. No disrespect intended. Now drink your water. > Chuck wrote: > > I did, and I learned that there's quite a controversy about the subject [quoted text clipped - 55 lines] > is healhty, sports-minded individuals; not hepatitis patients. No disrespect > intended. Now drink your water. agree with Spidey here (getting awful mellow in my old age!) you guys gotta quit trying to find excuses not to do what you know is good for you, and just DO it! The water intake is one of the most important things you can do to get through this treatment with the side effects somewhat under control. The water will help your dizziness/light headedness, will help with nausea, will help dry skin and scalp, and it flushes a lot of nastiness through your system, helping your organs cope with the poisons you are putting into your body. so please! drink your water :)) Sara |
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