[nukkad] No Need to Guzzle All That Water

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 Hi all,                                                                             
                                                                                     
 The forwarded matter is contradictory to the mail which I received that had         
 recommended to drink 8 glasses of water                                             
 a day for optimal heath. Any comments ?????                                         
                                                                                     
 Thanks                                                                              
 Harish                                                                              
                                                                                     
                                                                                     
 No Need to Guzzle All That Water, Expert Says                                       
                                                                                     
                                                                                     


                                                                                     
                                                                                     
                                                                                     
 WASHINGTON (Reuters) - Trying to do the "right" thing by drinking eight full        
 glasses of water a day may do little more than make a person run to the bathroom, a 
 researcher said on Friday.                                                          
                                                                                     
                                                                                     


                                                                                     
                                                                                     
                                                                                     
                                                                                     
 Newspaper articles, health and beauty magazines all advise drinking at least 8 full 
 glasses of water a day totaling 64 ounces for optimal health -- an approach called  
 "8x8" by proponents. But Dr. Heinz Valtin of Dartmouth Medical School in New        
 Hampshire said there is no scientific evidence to back up this advice, which has    
 helped create a huge market for bottled water. "After 10 months of careful          
 searching I have found no scientific evidence that supports '8x8'," Valtin, who has 
 written textbooks on the subject of human water balance, said in a telephone        
 interview. Writing in the American Journal of Physiology, Valtin, a kidney          
 specialist, said people forget that the food they eat also contains some water.     
                                                                                     
                                                                                     


                                                                                     
                                                                                     
                                                                                     
 The Food and Nutrition Board of the National Research Council                       
                                                                                     
 has recommended that people take in about one milliliter of water for each calorie  
 of food eaten                                                                       
                                                                                     
                                                                                     
 This adds up to two liters, or 74 fluid ounces on an average 2,000-calorie diet.    
 But the National Research Council also noted that much of this is already contained 
 in food. "I did 43 years of research on that system -- the osmoregulatory system.   
 That system is so precise and so fast that I find it impossible to believe that     
 evolution left us with a chronic water deficit," Valtin said.                       
                                                                                     
                                                                                     
 LOW ON FLUID                                                                        
                                                                                     
                                                                                     
 If a person gets low on fluid, the body compensates by bringing fluid back out of   
 the kidneys and by slowing the loss of water through the skin, Valtin said. Thirst  
 kicks in long before dehydration starts, he added.                                  
                                                                                     
                                                                                     
 "It does it very quickly and very accurately and it does so in minutes," Valtin     
 said.                                                                               
                                                                                     
                                                                                     
 He said he and colleagues became concerned after seeing dozens of newspaper and     
 magazine articles urging people to sip water all day. "I started talking to my      
 colleagues and asking them 'Do you know of any evidence for this?'. Invariably,     
 they said, 'No I think it's a myth'," Valtin said.                                  
                                                                                     
                                                                                     
 The journal asked him to review all the scientific studies he could find and he     
 concluded that someone misinformed has been telling people to drink large amounts   
 of water when most do not need to.                                                  
                                                                                     
                                                                                     
 "I am referring to healthy adults in a temperate climate leading a largely          
 sedentary existence," Valtin said. "Persons with certain diseases must have large   
 volumes of water -- kidney stones are probably the most common example."            
                                                                                     
                                                                                     
 The rest can just drink enough to slake thirst -- and this includes coffee, tea,    
 and even beer -- despite their diuretic effects, Valtin said.                       
                                                                                     
                                                                                     
 He hopes people will be relieved of the guilt of not getting enough water, and of   
 the expense of buying bottled water to drink throughout the day.                    
                                                                                     
                                                                                     
 "There is also the possibility that if you drink a lot of water that happens to be  
 polluted then of course you get more pollutants," Valtin said.                      
                                                                                     
                                                                                     
 "Then there is the inconvenience of constant urination, the embarrassment of having 
 to go to the bathroom all the time," he added.                                      
                                                                                     
                                                                                     
 And overdoses of water can cause water intoxication that can lead to confusion and  
 even death. Water intoxication is one deadly effect of taking the drug Ecstasy, for 
 instance, because it makes people thirsty beyond their physical needs.              
                                                                                     
                                                                                     
                                                                                     
                                                                                     
                                                                                     
                                                                                     





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