8 glasses of water
Posted on Apr 8th, 2006
by
Yuri

Water is not my favourite drink but when I am really thirsty, it does quench my thirst. Most of my life, I was not much of a water person, swimming is not my strength and either is drinking water. Perhaps it is tradition? Most of the women in my family don't drink too much water, I can't recall any of my aunties or my grandma drinking more than 2 glasses a day. I tried to drink more but most of the time, the day goes on and I end up not drinking more than 2 cups. We were told that to drink 8 glasses a day is a healthy routine. When did this happened? I don't think it is true for certain people. What about body size? Water in food intake and other drinks? What if I am not thirsty? Well, I found evidence that displays some interesting truths about water. I think it will be helpful to share.
How much should one drink?
Most people do not need 8 glasses a day. In a study done by Heinz Valtin (Kidney specialist & prof) did a study about the 8 glasses a day idea and found no support for it. A register nurse says "It depends on your size and activity level." One thing we can use to see is our urine. She said that if our urine is light lemon colour, it means that we are well hydrated so check it out.
Does other drinks count?
Yes, soda, milk, juice, coffee, tea. A study conducted by the center for human nutrition in 2000 found that subjects that were given water or a combination of liquid and no matter what they drunk, they were well hydrated. Well hydrated yes but as for health..I would conclude HUMMM..
There is water in food too so that definitely counts. "Fruits and vegetables can be up to 95% percent water". Plus nutritionist estimate that 2 to 3 cups of water comes from food in a day.
Can we drink too much?
Possible but unlikely. In a healthy moderately active person, Valtin says that "the body's water balance system is so sensitive and accurate that water intoxication is highly unlikely".
Is tap water safe?
The magazine quoted U.S facts saying it is safe 9/10 public water systems meet the federal heath standards according to EPA (Environmental Protection Agency). The director of the Environmental Quality Institute at the University of North Carolina in Asheville says that "the quality of water varies depending on its source, treatment, and delivery system as well as plumbing it flows through".
For local water reports
Filter or no filter?
Yes, if your water has lead, arsenic or other contamination. Have your water tested for backup and just in case. Here is a water filter site NSF
Is bottle water better?
Most likely not says the author of NRDC study that tested more than 100 brands of bottle water over four years. "Safety standards for bottled water is similar to those the EPA sets for tap water, enforcement is lacking." EEK, in 1/3 of waters tested in 1997-2000, the EPA found contaminants in levels not safe for drinking. Also despite what the bottle says it doesn't guarantee that spring water is actually come from a spring. The NRDC & Consumers Union estimates that at least a quarter of bottled water is simply tap water. If you like drinking bottled water, pick a brand that belong to the international bottled water association which require companies to meet gov't standards.(Arrowhead, Dannon, Evian, Perrier..etc)
Does temperatures matter?
In a study, cold, warm, hot water was given to athletes before and after a strenuous workout and they found out that water had no effect on the subject's endurance or hydration level. As for temperatures from the tap, it is best to let it run for at least 1 minute before drinking from tap water. Hot water from the tap pulls more lead from the pipes than cold water - lead levels are highest in water that's been sitting in pipes. Plus warm water breeds bacterias!
Bad water?
Water can go bad when it is sitting for a long time so be sure to not drink water that has been sitting around. Do frequently change your pets water. We all want to drink fresh water including our critter friends. Make sure to wash out your water bottles! Use hot water and soap to clean. In addition, place the water bottle in a dark, cool place since heat and light can damage the container.
References:
Real Simple
The International Bottled Water Association
Water testing - Underwriters Laboratories
Home test kit PurTest & Watersafe
The Water Quality Association

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