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Water, Fluids & Hydration




  1. I drink about 2 1/2 liters of water, a couple cans of Pepsi per day and I am still thirsty. Answer
  2. Do we need 48 ounces of water intake or is it 64 ounces a day? Answer
  3. I purchased your book "Edmumd's Food Ratings for Dieters" from the UCLA bookstore. Could you please tell me what king of rating various waters have? Answer
  4. Is there a difference between room temperature and cold water as far as how the body uses it? Answer
  5. Most weight loss groups recommend at least eight glasses of 8 ounces of water a day. If 8 were good would 16 be even better? Can a person drink too much water? Answer
  6. With the warm weather, my kids are constantly asking for something to drink. Do you have any good suggestions besides KoolAid? Answer


I am constantly thirsty. I drink about 2 1/2 liters of water, a couple cans of Pepsi per day and I am still thirsty. Water gets to be very boring and I know soda is really bad for me. What cold drinks are out there that do not contain sugar?

I can't have citrus juices or tea due to digestion problems. What can I do to make water more pleasant to drink? Thank you for your help.

If you are constantly thirsty, I would highly recommend you make an appointment to see your doctor. Though it might not be anything, excessive thirst is one symptom of diabetes. Tell your doctor about your constant thirst.

If you are drinking regular Pepsi, then you are getting about 9 teaspoons of sugar per 12 ounce can. You could switch to sugar-free carbonated beverages and see if they reduce your thirst. Fruit juice contains almost 3 teaspoons of fruit sugar per 1/2 cup, but fruit sugar can be absorbed and digested without stimulating your body's to produce insulin. Fruit drinks contain as little as 2 to 10% fruit juice and the remaining ingredients are sugar and water. So fruit drinks are not a good alternative. There are flavored unsweetened waters out there or you could put a few drops of lemon juice or slices of lemon in water for flavoring.

You didn't mention coffee or decaffeinated coffee. Would you drink either of them? Also, what about herbal teas? You can drink either hot or cold.


My question is do we need 48 ounces of water intake or is it 64 ounces / day? Thanks.

Don't know who came up with the recommendations for 8, eight ounce glasses of water per day which would equal 64 ounces. There is no research to support this recommendation.

Easier method is to pay attention to the color of your urine each time you urinate. (Urine that has accumulated in your bladder during sleep will be more concentrated and yellow. Otherwise, if your kidneys didn't concentrate urine during sleep, you would have to wake up to urinate.) After the urinating the first time after waking up, your urine should be colorless and odorless for the remainder of the day. This assumes that you have normal functioning kidneys and no bladder disease or infection.

FYI, within 15 minutes of eating asparagus, you may notice a particular smell to your urine. It is harmless and comes from a natural chemical found in asparagus called methylthioacrylate and methylthiopropionate.


I purchased your book "Edmund's Food Ratings for Dieters" from the UCLA bookstore on a recent visit. Could you please tell me what kind of rating various waters would have?

I really enjoy your book and find it very readable and well researched. How can I find out about other foods that are not covered in your book? Thanks.

Also do you have any educational materials that I can use in a middle school level science classroom?

With regards to water ratings, one comparison would be based on hard versus softened water. Hard water contains minerals, soft water doesn't and may have higher sodium content. Research has found that minerals in hard water, though not in the most absorbable form, are better for your cardiovascular system (heart).

The second comparison would be based on tap versus bottled water including water coolers. Since many people are drinking bottled water, they may not be getting fluoride provided by fluoridated city water. Fluoride helps make teeth calcium harder and less likely to dental decay. Fluoride also helps make bones harder and less likely to break or lose calcium.

Glad you liked "Edmund's Food Ratings for Dieters" which I co-authored. I have not rated additional foods yet.

With regards to educational materials that can be used in a middle school science class, I would suggest you contact the National Dairy Council in Rosemont, IL. They have many wonderful educational materials that are geared to K though 12 students at a low cost. Also, General Mills in Minneapolis, MN has a wonderful computer program that has students analyze their breakfast (of course by choosing from various cereals and other foods). Also, you can contact the American Dietetic Association in Chicago IL for consumer educational materials. March is National Nutrition Month for which the ADA developed many aimed at K through 12 students.


I've noticed recommendations for cold water a couple of times recently. Is there a difference between room temperature and cold water as far as how the body uses it?

Cold (40 - 50 degrees F) water is absorbed more quickly from the stomach. Also, if cold water is drank during physical exercise has the dual effect of also cooling the internal body temperature along with sweat produced by exercise. Since sweat is your body's way of cooling itself, leave sweat on your skin and you should feel cooler.


Thanks for the Answer to the question about the amount of calories per day. You said 12 X Goal, that really helps me a lot.

I have another question. I have heard how important it is to drink water. In most weight loss groups I have seen, they recommend at least eight glasses of 8 ounce glasses of water a day. If 8 were good would 16 be even better? Can a person drink to much water?

Yes, it is possible for a person to drink too much water. It is called water intoxication. What happens is the sodium level in the blood reaches very low levels (because of dilution by excess water which can only be excreted in the urine, sweat or breath). This disturbs water balance in the brain, which can cause epileptic seizures and even death.

Research has shown that a person can safely drink up to 10 liters of water a day. That would equal 10 one-liter bottles of water. An exception would be persons with kidney disease who are limited in the amount of water they can drink per day. Persons with bladder infections benefit from increasing their water intake.


With the warm weather, my kids are constantly asking for something to drink. I start out giving them juice, but after a glass or two, I switch to KoolAid. Pop is too expensive and I don't want them drinking all that sugar. Do you have any good suggestions? My children are 4 and 21 months.

Cold water is the best fluid to satisfy a thirst and the most effective to replace fluid lost through exercise and perspiration. Keep a pitcher of water in the refrigerator during summer months for thirsty children.

When you make juice for hot weather thirst, try adding six cans of water to the frozen juice concentrate instead of three. If you use canned juice, pour the canned juice into a very large pitcher and add an equal amount of water. You can also fill their glass half with the canned juice and the rest with tap water. Remember though, you have diluted the nutritional content of the juice by adding twice the water. Fruit juice is a good source of vitamin C and if you double dilute orange juice, you will have to drink twice as much (1 cup) to get your Recommended Dietary Allowance (RDA) of vitamin C. You will find that double diluted juice satisfies your children's thirst and goes farther for less during summer months.

Another suggestion for summer thirst is freezing juice in your ice cube trays. A fruit cube is cooling and similar to a frozen Popsicle.

You are correct in stating that pop has a lot of sugar, but so does KoolAid. Most carbonated sugar-containing beverages contain 9 teaspoons of sugar per 12-ounce can. Depending on how much sugar you add (3/4 to one cup of sugar), to a package of KoolAid, 12 ounces of KoolAid can contain between 6.7 and 9 teaspoons of sugar respectively. KoolAid does have added vitamin C, which may be seem like a redeeming factor for some parents though I disagree.

You should be aware of how much fluid your children drink especially in summer. Your four-year-old can probably tell you when he's thirsty, but your 21-month-old child may not. Whenever your four-year-old wants a drink, offer some liquids to your 21-month-old also. Another guidelines for those parents with only one child is, whenever you get a drink for yourself, offer some to your child. This includes offering a bottle of water to an infant.

By the time you are thirsty though, you are already somewhat dehydrated. So drink water every waking hour to anticipate thirst especially in hot weather and remember to offer your children water every time you do.

At birth, 75% of the body weight of a child is water. This decreases to approximately 60% by age 10. To put this on a practical level, infants ages birth to two years (6 to 26 pounds), should have three to six cups of water per day including water in breast milk, formula and food including drinking water. Children age's two to 12 years (26 to 100 pounds), should have five to eight cups of water per day including water in beverages and food as well as drinking water.

Since the amount of fluid required per day is determined by your body temperature, the ability of your kidneys to remove wastes and sweating, a second guideline would be helpful. When your child goes to the bathroom, his/her urine should be light yellow or colorless and odorless, unless it is the first urine after getting up in morning. Also check infants soiled diapers for urine color and odor.


Disclosure: I have provided media services about hydration for Thermos.







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