8-ounce Glasses: Consuming proper amount of water keeps mind, body sharp
Heida Knapp Rinella
you pour it, that's a lot of water.
any punditry you may have heard lately that you really don't need to drink that
much water each day, experts say you do -- especially in arid Southern Nevada.
still published in our textbooks," said Susan Meacham, director of nutrition
sciences at the University of Nevada, Las Vegas.
recommendation, Meacham said, is based on a guideline of 1 milliliter of water
for every calorie burned during the course of a day.
2,000 calories that you're burning, you should be consuming 2,000 milliliters,
which is about 2 liters, which is a little bit more than 2 quarts -- which is
your eight glasses a day," she said.
Davi Werner, executive administrator of Weight Watchers of Southern Nevada and
Southern Utah, said the group recommends -- "We never say in Weight Watchers
that you have to do this or you have to do that" -- members drink six to
eight 8-ounce glasses, which is why you'll often see Weight Watchers members carrying
Higgins, a physician of emergency medicine and medical toxicology at University
Medical Center, prefers not to set a concrete guideline, though he said the average
person probably doesn't consume enough water.
like everything else, there's never a completely simple answer," Higgins
said. "It's tough to say in general everybody should drink eight glasses
of water a day. The bottom line is you need to stay rehydrated.
of us who aren't acclimated to the heat, those of us who are working harder, should
he has bad news for those who think they can just let their bodies tell them when
they need to get some water:
you become thirsty, you're already starting to get dehydrated."
really need to monitor your fluid consumption," Higgins said. A guideline
for whether you're consuming enough water, he noted, is whether "you've urinated
in the last several hours. That's one of the ways we tell in medicine if a person
is dehydrated; we check to see if you're making urine. You need to go every two
to three hours if you're exercising and working out; the average person, every
three or four hours if they're just sitting around.
you're sweating profusely and working hard, drink fluids regularly before you
start, and then every 20 to 30 minutes while you're performing the activity."
pointed out that the body of the average adult is 50 percent to 60 percent water;
the bodies of infants are about 75 percent water.
course, you reduce about 10 percent for obese people, about 20 percent for severely
obese people, because fat displaces water," she said. "Women about 10
percent less, because of the body-fat difference."
is it so important to maintain the levels of water in our bodies?
the functions of water are so important," Meacham said, "everything
from maintaining temperature to distributing nutrients throughout the body to
providing the shape and rigidity of our cells. It'll be a lubricant in our joints.
Water actually functions as a cushion for body tissues.
the way around our organs and around every cell, there's a layer of fluid. A solvent
to dissolve sugars in the bloodstream, digestive tract, saliva. It's a source
of trace minerals."
too little water can cause big problems.
can cause everything from dizziness to lack of coherence," Meacham said.
"Our thirst mechanism is very insensitive. By the time we decide it's time
to stop and get a bottle of water, we're already approaching a level of dehydration
that would be physiologically compromising."
threat is most severe in infants and the elderly, she said, and is the primary
cause of hospitalization among the elderly in Nevada.
said dehydration can manifest itself in ways you may not notice.
days you feel flustered, the days you can't find anything, are probably days when
you haven't had enough water," she said. "Clear water, clear mind and
clear thoughts really do go together."
for conventional wisdom that we get an ample supply of water from foods, Werner
said, "I would highly disagree. There's also a high amount of sodium in food,
so therefore it's absorbing it. But your body absolutely needs it."
don't think that morning coffee or Coke will help much.
we're truly trying to take on water, water is really the best," Meacham said.
"Tea and coffee, of course, contain caffeine, and caffeine is actually dehydrating.
Alcohol is dehydrating.
juice is a wonderful food, extremely high in everything from folic acid to vitamin
C to potassium; however, it's also very high in sugar. For true fluid replacement,
we should dilute our standard orange juice 1 to 8. Sugar attracts water. When
you put it in your gut, you will actually be pulling water out of your gut. Coca-Cola,
Gatorade -- those are really high in sugar. They really must be diluted, some
two times, some four times."
if we drink bottled water, exclusively, she said, "we are removing a primary
source of ultratrace nutrients" such as boron, valadium, selenium and nickel.
Those essential nutrients are found in water that's not so highly filtered, such
as tap water.
said she's often asked by members if tea or Crystal Light will fill the bill.
you going to take a shower in Crystal Light?" she asked. "Do you want
to consider it water? What is this all about? If you really want to help yourself,
give your body the optimum chance; give it the water it needs. Water is a great
positive part of your body and your thought process."
said it is possible to drink too much water, which leads to psychogenic polydypsia,
or water intoxication. "It's not that common in people who don't have mental
illness or aren't actively trying to flush their systems."
said there are various reasons people don't drink enough water.
think particularly among the elderly, it's a matter of convenience," she
said; many older people may have problems "moving around and getting rid
of your water intake.
of us are simply too busy; we don't take the time to consider our body needs.
water is heavy to carry around."
Werner said increasing water consumption often is simply a matter of retraining
just a matter of getting accustomed to thinking, `Oh, I really feel like a glass
of water,' " she said.
water consumption can help in weight control, she added.
also necessary to learn, `Is my body really hungry or is my mind just thinking
what I want?' " she said. "Water will help. Take a drink, wait 15 minutes,
and you may be satiated and full. It lends to the fullness and it really helps
suggested adding fresh lemons to water to increase palatability, and placing filled
cups or bottles in various locations that are part of your routine to increase
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