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why does coffee make my urine almost instantly yellow?

by (0) Updated July 02, 2014 at 11:23 PM Created June 30, 2014 at 10:20 PM

Before someone jumps down my throat with "you're dehydrated" let me explain myself.

I drink a lot of water...more than "normal" people but probably less than hardcore thirsters. I also drink about 2 cups of coffee daily (weekdays only)

Here is my concern:

I wake up, drink a glass of water, drink a small iced coffee PLUS almost 32 more ounces of water before noon. (At this point I'm peeing twice an hour and it is coming out clear) I then take a 30 minute lunch break at which I usually BEGIN to SIP on another iced coffee (not even a 1/4 of the coffee will be gone)... and the bathroom break I take upon walking back into my office comes out very DARK YELLOW and very fragrant.

Am I seriously dehydrating within 15 minutes of being almost over-hydrated...or any ideas of what the issue is?

Can I not tolerate coffee? Is my body even soaking up the water I drink or am I just pissing it out instantly? Help!

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9 Replies

B82f2515ba5a800bed018c9536f9108d
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977 · July 02, 2014 at 2:23 PM

If it is the diuretic effect (it probably is, IMHO) a simple test will let you know the answer. Pick some dandelions leaves (say, 2 oz.) and eat them in a salad. That is a stronger (not to mention healthier) diuretic. I eat 2-4 salads at each change of season (fall and spring, often dandelions go dormant here in summer), and they produce a no-doubt flush of yellow the first time. I stop when they do not produce an effect any more.

543a65b3004bf5a51974fbdd60d666bb
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4348 · July 01, 2014 at 11:08 PM

"Because the prevention (due to caffeine intake) of sodium ion resorption reduces water filtration from the blood while increasing urination, caffeine indirectly causes urine to become more concentrated with urea, ammonia and other wastes. As a result, caffeine can cause urine to become darker in color and pungent. This is also a classic indication of dehydration, but given that caffeine prevents water filtration from the blood, it is almost impossible to become dehydrated as a result of caffeine consumption"

543a65b3004bf5a51974fbdd60d666bb
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4348 · July 01, 2014 at 11:03 PM

"...before noon. At this point I'm peeing twice an hour and it is coming out clear" > At this point you are over-hydrated. You should not need to pee twice an hour. Pee does need to be clear, in fact imo it is not good. You are likely peeing away valuable electrolytes (that need to be replaced). Have you eaten anything yet?

"I then take a 30 minute lunch break at which I usually BEGIN to SIP on another iced coffee (not even a 1/4 of the coffee will be gone)... and the bathroom break I take upon walking back into my office comes out very DARK YELLOW and very fragrant" > Did you eat anything at lunch...if yes, then this is your kidneys working, pee is supposed to be yellow.

Where does it sit on this pee chart,

ps. did you take any supplements at lunch time, in particular something including Vit B2 (riboflavin), that stuff can turn your pee bright (fluorescent) yellow. ref

543a65b3004bf5a51974fbdd60d666bb
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4348 · July 01, 2014 at 10:59 PM

test answer (will delete later)

"...before noon. At this point I'm peeing twice an hour and it is coming out clear" > At this point you are over-hydrated. You should not need to pee twice an hour. Pee does need to be clear, in fact imo it is not good. You are likely peeing away valuable electrolytes (that need to be replaced). Have you eaten anything yet?

"I then take a 30 minute lunch break at which I usually BEGIN to SIP on another iced coffee (not even a 1/4 of the coffee will be gone)... and the bathroom break I take upon walking back into my office comes out very DARK YELLOW and very fragrant" > Did you eat anything at lunch...if yes, then this is your kidneys working, pee is supposed to be yellow.

Where does it sit on this pee chart,

ps. did you take any supplements at lunch time, in particular something including Vit B2 (riboflavin), that stuff can turn your pee bright (fluorescent) yellow. ref

Edit: some info from 'google',

"Because the prevention (due to caffeine intake) of sodium ion resorption reduces water filtration from the blood while increasing urination, caffeine indirectly causes urine to become more concentrated with urea, ammonia and other wastes. As a result, caffeine can cause urine to become darker in color and pungent. This is also a classic indication of dehydration, but given that caffeine prevents water filtration from the blood, it is almost impossible to become dehydrated as a result of caffeine consumption"

543a65b3004bf5a51974fbdd60d666bb
0
4348 · July 01, 2014 at 10:53 PM

"...before noon.At this point I'm peeing twice an hour and it is coming out clear" > At this point you are over-hydrated. You should not need to pee twice an hour. Pee does need to be clear, in fact imo it is not good. You are likely peeing away valuable electrolytes (that need to be replaced). Have you eaten anything yet?

"I then take a 30 minute lunch break at which I usually BEGIN to SIP on another iced coffee (not even a 1/4 of the coffee will be gone)... and the bathroom break I take upon walking back into my office comes out very DARK YELLOW and very fragrant" > Did you eat anything at lunch...if yes, then this is your kidneys working, pee is supposed to be yellow.

Where does it sit on this pee chart,

ps. did you take any supplements at lunch time, in particular something including Vit B2 (riboflavin), that stuff can turn your pee bright (fluorescent) yellow. ref

Edit: some more info on caffeine from live-strong...

"Because the prevention (due to caffeine intake) of sodium ion resorption reduces water filtration from the blood while increasing urination, caffeine indirectly causes urine to become more concentrated with urea, ammonia and other wastes. As a result, caffeine can cause urine to become darker in color and pungent. This is also a classic indication of dehydration, but given that caffeine prevents water filtration from the blood, it is almost impossible to become dehydrated as a result of caffeine consumption" (go to the link for the rest of info)

543a65b3004bf5a51974fbdd60d666bb
0
4348 · July 01, 2014 at 10:50 PM

"...before noon.At this point I'm peeing twice an hour and it is coming out clear" > At this point you are over-hydrated. You should not need to pee twice an hour. Pee does need to be clear, in fact imo it is not good. You are likely peeing away valuable electrolytes (that need to be replaced). Have you eaten anything yet?

"I then take a 30 minute lunch break at which I usually BEGIN to SIP on another iced coffee (not even a 1/4 of the coffee will be gone)... and the bathroom break I take upon walking back into my office comes out very DARK YELLOW and very fragrant" > Did you eat anything at lunch...if yes, then this is your kidneys working, pee is supposed to be yellow.

Where does it sit on this pee chart,

ps. did you take any supplements at lunch time, in particular something including Vit B2 (riboflavin), that stuff can turn your pee bright (fluorescent) yellow. ref

Edit:some info on caffeine from here (its only livestrong, but its a start...),

"Because the prevention (due to caffeine intake) of sodium ion resorption reduces water filtration from the blood while increasing urination, caffeine indirectly causes urine to become more concentrated with urea, ammonia and other wastes. As a result, caffeine can cause urine to become darker in color and pungent. This is also a classic indication of dehydration, but given that caffeine prevents water filtration from the blood, it is almost impossible to become dehydrated as a result of caffeine consumption" (go to the link for the rest of info)

96440612cf0fcf366bf5ad8f776fca84
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16858 · July 01, 2014 at 3:36 PM

Don't know how true this is but Asprey claims that when you have to pee immediately after drinking coffee, you're probably drinking poor quality coffee that has toxins in it. Try switching to a better coffee and see how that affects you.

I did notice this effect myself, but it could be placebo.

7a777966a2b7f30251c358b6fe35936f
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0 · July 01, 2014 at 9:21 AM

Yellow urine after consumption of coffee urine is a sign that you are dehydrating. Coffee is actually diuretic that can make you urinate so much and lose such a high measure of body liquids that it prompts drying out. It takes about 500 mg of perk to affect drying out, so don't drink more than a few mugs of coffee a day.

543a65b3004bf5a51974fbdd60d666bb
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4348 · July 01, 2014 at 2:53 AM

"...before noon. At this point I'm peeing twice an hour and it is coming out clear" > At this point you are over-hydrated. You should not need to pee twice an hour. Pee does need to be clear, in fact imo it is not good. You are likely peeing away valuable electrolytes (that need to be replaced). Have you eaten anything yet?

"I then take a 30 minute lunch break at which I usually BEGIN to SIP on another iced coffee (not even a 1/4 of the coffee will be gone)... and the bathroom break I take upon walking back into my office comes out very DARK YELLOW and very fragrant" > Did you eat anything at lunch...if yes, then this is your kidneys working, pee is supposed to be yellow.

Where does it sit on this pee chart,

ps. did you take any supplements at lunch time, in particular something including Vit B2 (riboflavin), that stuff can turn your pee bright (fluorescent) yellow. ref

Edit: some info on caffeine from here (its only livestrong, but its a start...),

"Because the prevention (due to caffeine intake) of sodium ion resorption reduces water filtration from the blood while increasing urination, caffeine indirectly causes urine to become more concentrated with urea, ammonia and other wastes. As a result, caffeine can cause urine to become darker in color and pungent. This is also a classic indication of dehydration, but given that caffeine prevents water filtration from the blood, it is almost impossible to become dehydrated as a result of caffeine consumption" (go to the link for the rest of info)

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