Water
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How Many Glasses of Water Should We Drink a Day?
Drinking an adequate amount of water daily is important for overall good health because water aids in digestion, circulation, absorption and even excretion.
There have been a few large studies in which fluid intake is measured before disease develops. For example, a Harvard study of 48,000 men found that the risk of bladder cancer decreased by 7 percent for every extra daily cup of fluid one drinks.
There’s evidence suggesting not drinking enough is associated with a less resilient skin and more prone to wrinkling, falls and fractures, heat stroke, heart disease, lung disorders, kidney disease, kidney stones, bladder and colon cancer, urinary tract infections, constipation, dry mouth, cavities, decreased immune function and cataract formation.
Based on all the best evidence to date, authorities from Europe, the U.S. Institute of Medicine, and the World Health Organization "WHO", recommend between 2 to 2.7 liters of water a day for women. That’s 8 to 11 cups a day for women and 10 to 15 cups a day for men.
There have been a few large studies in which fluid intake is measured before disease develops. For example, a Harvard study of 48,000 men found that the risk of bladder cancer decreased by 7 percent for every extra daily cup of fluid one drinks.
There’s evidence suggesting not drinking enough is associated with a less resilient skin and more prone to wrinkling, falls and fractures, heat stroke, heart disease, lung disorders, kidney disease, kidney stones, bladder and colon cancer, urinary tract infections, constipation, dry mouth, cavities, decreased immune function and cataract formation.
Based on all the best evidence to date, authorities from Europe, the U.S. Institute of Medicine, and the World Health Organization "WHO", recommend between 2 to 2.7 liters of water a day for women. That’s 8 to 11 cups a day for women and 10 to 15 cups a day for men.
But that’s water from all sources, not just beverages. We get about a liter from food and the water our body actually makes. These translate into a recommendation for women to drink 4 to 7 cups of water a day and men, 6 to 11 cups, assuming only moderate physical activity at moderate ambient temperatures.
We can also get water from all the other drinks we consume, including caffeinated drinks, with the exception of stronger alcoholic drinks like wines and spirits. Beer can leave you with more water than you started with, but Wine actively dehydrates you.
We can also get water from all the other drinks we consume, including caffeinated drinks, with the exception of stronger alcoholic drinks like wines and spirits. Beer can leave you with more water than you started with, but Wine actively dehydrates you.
Sources
http://nutritionfacts.org/
AB Goodman, HM Blanck, B Sherry, S Park, L Nebeling, AL Yaroch. Behaviors and Attitudes Associated With Low Drinking Water Intake Among US Adults, Food Attitudes and Behaviors Survey, 2007. Prev Chronic Dis. 2013 Apr 11;10:E51.
NP Walsh, MB Fortes, C Purslow, M Esmaeelpour. Author response: is whole body hydration an important consideration in dry eye? Invest Ophthalmol Vis Sci. 2013 Mar 7;54(3):1713-4.
EC Rush. Water: neglected, unappreciated and under researched. Eur J Clin Nutr. 2013 May;67(5):492-5.
AP Vivanti. Origins for the estimations of water requirements in adults. Eur J Clin Nutr. 2012 Dec;66(12):1282-9.
B Benelam, L Wyness. Hydration and health: a review. Nutrition Bulletin. 2010; 35:3–25.
E Jéquier, F Constant. Water as an essential nutrient: the physiological basis of hydration. Eur J Clin Nutr. 2010 Feb;64(2):115-23.
EF Adolph. The regulation of the water content of the human organism. J Physiol. 1921 May 24;55(1-2):114-32.
D Negoianu, S Goldfarb. Just add water. J Am Soc Nephrol. 2008 Jun;19(6):1041-3.
J Chan, SF Knutsen, GG Blix, JW Lee, GE Fraser. Water, other fluids, and fatal coronary heart disease: the Adventist Health Study. Am J Epidemiol. 2002 May 1;155(9):827-33.
AS Monto. The disappearance of Reye's syndrome--a public health triumph. N Engl J Med. 1999 May 6;340(18):1423-4.
DS Michaud, D Spiegelman, SK Clinton, EB Rimm, GC Curhan, WC Willett, EL Giovannucci. Fluid intake and the risk of bladder cancer in men. N Engl J Med. 1999 May 6;340(18):1390-7.
AB Goodman, HM Blanck, B Sherry, S Park, L Nebeling, AL Yaroch. Behaviors and Attitudes Associated With Low Drinking Water Intake Among US Adults, Food Attitudes and Behaviors Survey, 2007. Prev Chronic Dis. 2013 Apr 11;10:E51.
NP Walsh, MB Fortes, C Purslow, M Esmaeelpour. Author response: is whole body hydration an important consideration in dry eye? Invest Ophthalmol Vis Sci. 2013 Mar 7;54(3):1713-4.
EC Rush. Water: neglected, unappreciated and under researched. Eur J Clin Nutr. 2013 May;67(5):492-5.
AP Vivanti. Origins for the estimations of water requirements in adults. Eur J Clin Nutr. 2012 Dec;66(12):1282-9.
B Benelam, L Wyness. Hydration and health: a review. Nutrition Bulletin. 2010; 35:3–25.
E Jéquier, F Constant. Water as an essential nutrient: the physiological basis of hydration. Eur J Clin Nutr. 2010 Feb;64(2):115-23.
EF Adolph. The regulation of the water content of the human organism. J Physiol. 1921 May 24;55(1-2):114-32.
D Negoianu, S Goldfarb. Just add water. J Am Soc Nephrol. 2008 Jun;19(6):1041-3.
J Chan, SF Knutsen, GG Blix, JW Lee, GE Fraser. Water, other fluids, and fatal coronary heart disease: the Adventist Health Study. Am J Epidemiol. 2002 May 1;155(9):827-33.
AS Monto. The disappearance of Reye's syndrome--a public health triumph. N Engl J Med. 1999 May 6;340(18):1423-4.
DS Michaud, D Spiegelman, SK Clinton, EB Rimm, GC Curhan, WC Willett, EL Giovannucci. Fluid intake and the risk of bladder cancer in men. N Engl J Med. 1999 May 6;340(18):1390-7.