Do tea and coffee dehydrate?

[manlymatt83]

Do these dehydrate or hydrate?

 

[intogamer]

I know that coffee dehydrates because my nurse said that coffee makes you pee a lot

Same goes for tea

 

[Atheus]

They're 90% water, what do you think?

 

[Atheus]

Originally posted by: intogamer
I know that coffee dehydrates because my nurse said that coffee makes you pee a lot

Same goes for tea

You gain so much more liquid from the drink than you lose...

 

[MisterJackson]

Originally posted by: Atheus

Originally posted by: intogamer
I know that coffee dehydrates because my nurse said that coffee makes you pee a lot

Same goes for tea

You gain so much more liquid from the drink than you lose...

I've heard the opposite, but that could be wrong. I'm too lazy to look it up.

I know they're both diuretic (sp?).

Edit: Researched....ehh, I was part way right.



COFFEE DRINKING AND FLUID BALANCE

Q: What is a diuretic?

A: A diuretic is defined as any substance that increases the secretion of urine ? put simply this means anything that makes you want to urinate.

Q: How much fluid do I need on a daily basis?

A: Health professionals recommend at least 1.5 to 2 litres of liquids a day. The basic point is that you should drink enough fluid to replace what is lost.

Q: Why do I need to drink 1.5 to 2 litres of fluid a day?

A: Fluids have many functions in the body. They act as lubricant for joints and eyes, help to swallow, provide the medium for which most reactions in the body occur and help get rid of waste. Water also helps to regulate body temperature.

Q: Is coffee a diuretic?

A: The caffeine in coffee is a mild diuretic, but moderate consumption of coffee has no greater effect than that seen with plain water. Decaffeinated coffee contains minimal amounts of caffeine and will therefore also have no greater effect on fluid loss than water.

Q: So will drinking coffee make me dehydrated?

A: No, coffee is an important source of fluid in the diet and moderate consumption, of 4-5 cups per day for the general population, will have no adverse effect on fluid levels in the body. In fact, experts in nutrition state that coffee can contribute significantly to daily fluid intake.

Q: I have read that I should drink a glass of water for each cup of coffee I consume ? is this true?

A: No, the diuretic effect of coffee in moderate amounts is no greater than water. The British Nutrition Foundation confirms this by stating that you do not need to drink more water to compensate for consuming caffeinated drinks.

 

[blackdogdeek]

diuretic

 

[Turkey22]

Originally posted by: Atheus

Originally posted by: intogamer
I know that coffee dehydrates because my nurse said that coffee makes you pee a lot

Same goes for tea

You gain so much more liquid from the drink than you lose...

Incorrect diuretics like coffee and tea cause a net loss in liquid. You lose more than you get. It's specifically the caffeine in both of these drinks so if you had decaf I would expect that you wouldn't have that problem. The same is true for alcohol. Beer is typically in the upper 90% of water yet once it is gone from you system you become very dehydrated.

 

[dullard]

They are both water (hydrate) and diuretics (dehydrate). The key is the balance between the two effects. It will of course depend on how much caffeine is in the specfic drink.

1) If caffeine is small, hydration > dehydration, and you are hydrated.

2) If caffeine is moderate, hydration = dehydration, and overall you are not changed in hydration. However, while urinating, you get rid of toxins, so even this case is a good thing.

3) If caffeine is high, dehydration > hydration.

People always jump to #3's conclusion without thinking about what size the effect is for the very small amounts of caffeine in coffee and tea (if any).

 

[bignateyk]

Originally posted by: Atheus
They're 90% water, what do you think?

lol.

So are salt water, beer, and soda. I hear those are great drinks to rehydrate.

 

[V00DOO]

For me it is. If I drink a cup of coffee, I am constant in need to pee. It's a full load everything. Coffee also makes me what to take a dump too. Speaking of take a dump I got to go. Just had a cup of coffee.

 

[destrekor]

Originally posted by: dullard
They are both water (hydrate) and diuretics (dehydrate). The key is the balance between the two effects. It will of course depend on how much caffeine is in the specfic drink.

1) If caffeine is small, hydration > dehydration, and you are hydrated.

2) If caffeine is moderate, hydration = dehydration, and overall you are not changed in hydration. However, while urinating, you get rid of toxins, so even this case is a good thing.

3) If caffeine is high, dehydration > hydration.

People always jump to #3's conclusion without thinking about what size the effect is for the very small amounts of caffeine in coffee and tea (if any).

coffee is far from small in terms of caffeine content, as it technically has more caffeine that any energy drink for sale at the moment (except for Cocaine, or whatever it will be called after the name change). A typical cup of coffee can have between 100-200mg of coffee, some stating the average around 160mg per cup of drip-coffee. I want better facts and reasons why most sites state 100-200, instead of giving an average number. Espresso has a similar issue too: a lot of sites will state 50mg per shot, and others state 100mg per shot. And either way, judging how many cups of coffee worth of caffeine you've taken in through espresso shots is impossible with the amount of caffeine apparently varying so much. Wish someone would take a standard, store-bought bag, brew it by normal measures, and display the caffeine content! gah

 

[dullard]

Originally posted by: destrekor
coffee is far from small in terms of caffeine content, as it technically has more caffeine that any energy drink for sale at the moment (except for Cocaine, or whatever it will be called after the name change). A typical cup of coffee can have between 100-200mg of coffee, some stating the average around 160mg per cup of drip-coffee.

Caffeine is considered VERY a mild diuretic. Thus, you need a lot of it to have any effect. And 200 mg is a miniscule amount. There are studies on this.

caffeine is no more a diuretic than water, according to a research review article by Larry Armstrong, a professor of exercise and environmental physiology ...When caffeine or a caffeinated beverage is consumed, the body retains some of the fluid

Another study:

Thus, in spite of the expected rise in oxygen uptake, caffeine ingestion under the conditions of this study does not seem to disturb body fluid balance

 

[Atheus]

Originally posted by: bignateyk

Originally posted by: Atheus
They're 90% water, what do you think?

lol.

So are salt water, beer, and soda. I hear those are great drinks to rehydrate.

Those will hydrate you just fine... well except for salt water...

Not so long ago the water on ships was so bad sailors drank nothing but beer and grog for months on end and survived OK.

 

[Atheus]

Originally posted by: Turkey22

Originally posted by: Atheus

Originally posted by: intogamer
I know that coffee dehydrates because my nurse said that coffee makes you pee a lot

Same goes for tea

You gain so much more liquid from the drink than you lose...

Incorrect diuretics like coffee and tea cause a net loss in liquid. You lose more than you get. It's specifically the caffeine in both of these drinks so if you had decaf I would expect that you wouldn't have that problem. The same is true for alcohol. Beer is typically in the upper 90% of water yet once it is gone from you system you become very dehydrated.

No *you* are incorrect - see MisterJackson's revised post.

Why do people come on this forum and say things like this with such confidence when they clearly don't know?

 

[mooglekit]

Originally posted by: Atheus
No *you* are incorrect - see MisterJackson's revised post.

Why do people come on this forum and say things like this with such confidence when they clearly don't know?

Well c'mon, it wouldn't be ATOT without them Plus, they've gotta have someplace to feel important I keed, I keed...

 

[Syringer]

So does beer hydrate or dehydrate?

 

[0roo0roo]

its effect is more pronounced on coffee/caffeine n00b

 

[Whisper]

Originally posted by: Syringer
So does beer hydrate or dehydrate?

I think I remember a friend of mine in med school telling me he'd recently read an article suggesting that beer might not dehydrate you as was previously thought...largely because of the water content. Not sure on that, though.

 

[TruePaige]

In my survival class, they taught us not to drink beer if lost in the wilderness/desert because it'll dehydrate us.

 

[Greyd]

2 words:

Kidney Stones