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The Biomedical Engineering blog is the place for conversation and discussion about topics related to engineering principles of the medical field. Here, you'll find everything from discussions about emerging medical technologies to advances in medical research. The blog's owner, Chelsey H, is a graduate of Rensselaer Polytechnic Institute (RPI) with a degree in Biomedical Engineering.

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Coffee Helping with Hydration?

Posted March 24, 2014 12:00 AM by Chelsey H
Pathfinder Tags: coffee hydration. drinking Water

We talk a lot about coffee on CR4. Maybe it's because there are always new studies discussing the benefits of the drink or maybe it's because we like to talk about what we know….and on CR4, we know coffee. But did you know that coffee may actually help with hydration?

A study released by the University of Birmingham in the U.K. focused on busting the myth that coffee causes dehydration. Fifty male coffee drinkers (habitually consuming 3-6 cups per day) participated in two trials during which all physical activity, as well as food and fluid intake was controlled. Participants consumed either 4x200mL of coffee or water and total body water was calculated pre- and post- trial. At the end of the trial there were no significant changes (or differences) in total body water, urine volume, or body mass measurement. Image Credit

The study shows that caffeine has no influence on hydration status. According to Douglas Casa of the University of Connecticut, the coffee didn't "prompt the body to pee (or flush out) more fluid."

According to Sophie Killer, a doctoral research at Birmingham, "It's well understood that if you drink coffee habitually you can develop a tolerance to the potential diuretic effects of coffee". And for that I am grateful because as much as I try to increase the amount of water I drink, it's still easier to opt for coffee as a delicious afternoon pick-me-up.

Now this isn't an excuse to substitute all water for coffee, since too much coffee can lead to jitters and plain water has some pretty amazing health benefits; but, a daily coffee habit won't lead to dehydration.

Another interesting fact is that most people lose their tolerance after 4 days without coffee.

Do you have a coffee tolerance? Do you know of any other benefits of drinking coffee?

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#1

Re: Coffee Helping with Hydration?

03/24/2014 11:58 PM

Coffee is my comfort drink without calories. I would rather not go four days without it. It is a great start for any day and is good all day untill it is time to put the water in the form of ice cubes into the shaker.

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#2

Re: Coffee Helping with Hydration?

03/25/2014 12:21 AM

I drink loads of coffee all day.

I'm finding it might be the culprit for these dang headaches and fuzzy feeling that are plaguing me.

I'm cutting down on coffee and drinking plain water more now. I don't enjoy softdrinks at all. I think my symptoms are diminishing...hard to tell with the chemico/medicinal cocktail that also courses my veins..

Anyone else here had these symptoms with heavy coffee intake?

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#7
In reply to #2

Re: Coffee Helping with Hydration?

03/25/2014 9:12 AM

well, no, it put me in hospital with atrial fibrilation, but those symptoms you describe, for me, were caused by toxins in the bloodstream, which you mention you have. The cure was eat more fibre,...but drinking loads helps.

CNC jim

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#8
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Re: Coffee Helping with Hydration?

03/25/2014 9:31 AM

Thanks.

Yeh, toxins...hmmm.

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#9
In reply to #2

Re: Coffee Helping with Hydration?

03/25/2014 10:57 AM

Funny I have the exact opposite reaction from coffee (ok all forms of caffeine)... I get headaches if I don't drink it! Did you hear about the latest study that said water has no actual health benefits other than it has zero calories? Must say it made me feel better hearing it on the radio over my 3rd cup of joe!

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#10
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Re: Coffee Helping with Hydration?

03/25/2014 11:43 AM

Caffeine is a pain killer and is especially effective with headaches. There is plenty of caffine in Excedrin.

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#11
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Re: Coffee Helping with Hydration?

03/25/2014 12:03 PM

Without a doubt, I've suffered from migraines most of my life and I was able to give up most prescription migraine meds after a friend (who is a dr) told me to take Excedrin with a caffeinated beverage instead of water at the start of the headache.

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#12
In reply to #9

Re: Coffee Helping with Hydration?

03/25/2014 2:26 PM

Headaches from not drinking coffee?

My friend, I'm sorry to say that you've gone beyond caffeine tolerance to physical addiction to caffeine.

You can either a) try to remove caffeine from your diet completely and try to break the hold the drug has on your systems, or B) accept a minimum 'cup a day' as the new normal and live with the 'secret shame,' knowing that if you admit to having a caffeine addiction, your friends will just laugh it off and not believe you, or make jokes about your condition.

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#3

Re: Coffee Helping with Hydration?

03/25/2014 4:28 AM

I remember comedian Bob Newhart, in a 25th century telecon with an explorer in India, something like this:

Bob "So you take the dried coffee bean and put it in boiling water?

Expl "Sure do"

Bob "And then you get Bean soup ? What's new about that ?

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#4
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Re: Coffee Helping with Hydration?

03/25/2014 4:50 AM

Wasn't that the head of the East India Company in London in the 15th(?) century having a transatlantic telephone call with Walter Raleigh?

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#5
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Re: Coffee Helping with Hydration?

03/25/2014 4:55 AM

Your'e probably right...25 was my typo, and East India Company rings a bell...

You have a good memory!

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#6
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Re: Coffee Helping with Hydration?

03/25/2014 5:03 AM

That was the first Newhart skit I ever watched.

Laughed then, still laughing.

I need a fag and a brew now......

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#13

Re: Coffee Helping with Hydration?

03/25/2014 3:23 PM

My coffe intake change as I aged......

Started drinking coffee at 12 years old. My worse addiction of consumption was between the age of 16 and 26 with no real ill effect.... I could have 1-2 cups of cofee before retiring to bed and I'd sleep like a baby.

Afterwards I laid off of coffee until I was 30, and I became quite sensitive to the caffeine. And now 1 cup a day...... to start the day out......

Word of advice........ Never get coffee at Subway ........

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#14

Re: Coffee Helping with Hydration?

04/21/2014 10:45 AM

Coffee seems to flush the residual alcohol out of my system in the morning, lol.

I never drink water unless I am sweating, there is enough water in your food/juices/coffee to keep you healthy.

Drinking more than 1 1/2 liters of water a day (in any form) will just flush out your water soluble vitamins and minerals.

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Re: Coffee Helping with Hydration?

04/21/2014 11:50 AM

I rather do more water, I believe it helps reduces your risk of getting kidney stones. I understand kidney stones can be quite painful.

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#16
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Re: Coffee Helping with Hydration?

04/21/2014 12:00 PM

That is contrary to current medicine. What gets flushed along with your vitamins is far worse for you than the water soluble vitimins are good for you. That is why you take the supplements daily.

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Re: Coffee Helping with Hydration?

03/25/2019 5:29 AM

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