Oligo said:
Blood pH is indeed linked with pH of other bodily compartments and vice versa. And as we know that blood pH stays pretty much fixed, so does the pH of other compartments that are linked to it.
I didn't realize the other compartments do not fluctuate much more than the blood in general. It seems that the general clarification you are targetting is that the blood, and affecting compartments', pH under healthy resting conditions are not going to deviate from their corresponding healthy range due to diet, or temporary activities. I understand this more clearly now after researching to try to understand where you are coming from.
Now, irregardless of the amount of pH changes, I am mainly trying to suggest that acid is formed at different rates, with different quantities, and as different specific types, depending on variables at work (ie. exercise, diet, metabolism, etc...).
Urine does not affect the pH of the rest of the body as it is the final destination of excess acid and/or base molecules. Thus the pH of urine changes so that the pH of the rest of the body would stay the same, as pointed out by the source you gave
It doesn't affect the pH of the body but it is a tell-tale window into the activity occuring in the body. If the urine is highly acidic, then the body has at some point been dealing with an excess production of acid. So, my reasoning is that if high levels are persistent then your body is generating excess acid and therefore it seems a reasonable claim to state your body is acidic. The actual pH of your blood and body tissue may not be outside of its healthy range due to buffering, but the fact that acid is being generated and as a result buffering occurs gives credence to claiming the body environment is more acidic than it could otherwise be.
The previous reasoning points out, that our discussion seems to be revolving around whether referring to one's body as acidic refers to an appreciable change in body pH or instead refers to one's state of acid production. If the distinction is made, do you agree that they are both valid? In this thread I refer to the latter in speaking of variables affecting our statics.
I was referring to attempts other than breathe up routines to change the pH of the blood and linked bodily fluids as being silly as it is the buffer capacity (not pH) you change by warmup routines, diet and so forth.
And I am suggesting that one is affecting more than just buffer capacity, also affected is acid production. Which in turn will lower buffer capacity.
Cheers,
Tyler
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Other related points and articles:
http://www.quackwatch.org/01QuackeryRelatedTopics/DSH/coral2.html
But your blood never becomes acidic because as soon as the proteins are converted to organic acids, calcium leaves your bones to neutralize the acid and prevent any change in pH. Because of this, many scientists think that taking in too much protein may weaken bones to cause osteoporosis.
http://jp.physoc.org/cgi/content/full/537/3/993
The changes in interstitial pH exceeded the changes in venous blood pH.
<snip>
Furthermore, studies using microdialysis in active muscle have demonstrated that during
muscle activity interstitial concentrations of lactate were higher than venous lactate c
oncentrations (MacLean et al. 1999), suggesting that the equilibration across the capill
ary wall is restricted.
<snip>
In addition, the buffer capacity of interstitium and blood is different.
<snip>
For these reasons, it can be hypothesised that the exercise-induced changes in interstit
ial and venous blood pH are different and that the changes in venous blood pH underestim
ate the local interstitial pH changes.
<snip>
Thus resting muscle pH is at least 0.2 pH units lower than interstitial pH (7.38).