Caffeine as a diuretic (split from, 'Coffee Contradictions.')

[tkadm30]

One should be concerned about one's intake of caffeine if one suffers from high blood pressure. See http://www.mayoclinic.org/diseases-conditions/high-blood-pressure/expert-answers/blood-pressure/faq-20058543

 

Not really a concern. Caffeine is a diuretic.

[Strange]

Not really a concern. Caffeine is a diuretic.

 

 

That doesn't seem relevant. As the article says:

Caffeine can cause a short, but dramatic increase in your blood pressure, even if you don't have high blood pressure.

...

Some people who regularly drink caffeinated beverages have a higher average blood pressure than do those who drink none.

...

If you have high blood pressure, ask your doctor whether you should limit or stop drinking caffeinated beverages. [/size]

[tkadm30]

 

 

That doesn't seem relevant.

 

It matters to me! Diuretics are potential antihypertensive substances.

 

See: https://en.wikipedia.org/wiki/Diuretic

[CharonY]

Concentrations found in standard caffeinated drinks (such as coffee or tea) are not diuretic (compared to equivalent water intake). Caffeine is only diuretic in large doses in non-adapted individuals (i.e. if deprived of caffeine for a couple of days).

 

Also, IIRC as Strange mentioned in hypertensive individuals caffeine intake can result bursts of blood pressure that at least have been associated with cardiovascular events (obviously these were not controlled tests). Though it is generally assumed that in well-controlled hypertension patients caffeine consumption is of little risk.

[tkadm30]

Concentrations found in standard caffeinated drinks (such as coffee or tea) are not diuretic (compared to equivalent water intake). Caffeine is only diuretic in large doses in non-adapted individuals (i.e. if deprived of caffeine for a couple of days).

 

Also, IIRC as Strange mentioned in hypertensive individuals caffeine intake can result bursts of blood pressure that at least have been associated with cardiovascular events (obviously these were not controlled tests). Though it is generally assumed that in well-controlled hypertension patients caffeine consumption is of little risk.

 

I disagree. Caffeine-induced diuresis is caused partly by the blocking of adenosine receptors.

 

See: https://www.ncbi.nlm.nih.gov/pubmed/27225921

[hypervalent_iodine]

!

Moderator Note

Posts split from here.

tkadm30,

Could you please stop bringing back old threads from the dead and start your own? Thread necromancy is not against the rules, but it is when you drag them off topic.

[CharonY]

Considering that it is split now, I have posted a few papers a while back. Some of the older ones that I remember date back to the 80s where only large concentations of caffeine were found to have a diuretic effect. I suggest that you check some reviews instead of taking the first (obscure) paper that seems to support your assumptions. For example, specifically looking at athletes (which are under higher risk of dehydration) no difference in fluid retention was found between caffeinated beverages to water (Armstrong 2002 Int J Sport Nutr Exerc Metab). There is another good review that does a meta-analysis, but I cannot recall the author and would have to search for it, in case you are interested.

[Velocity_Boy]

That doesn't seem relevant. As the article says:

 

But of course that stat in the quote about coffee drinkers having higher bp than those who don't is probably a corrolary and not causal relationship. Since I know tons of fit healthy athletes who swill caffeine and have excellent bp. I am one of those types, fwi. My resting hr is in the mid 50s. My wife took my bp just for fun a few days ago right after I got up in the morning, and after a cup of coffee. It was 116/68.

 

So there is that.

 

Msybe you need to just let this whole debate go with a "caffeine, even in abundance, is fine for many people, but, like anything, can be potentially harmful if overused by other folks. We're all different. Some guys did from eating a strawberry."

 

Much better and non biased, eh?

 

Thanks...Hope that helps.

Edited March 15, 2017 by Velocity_Boy