The acid-alkaline theory comes up on a fairly regular basis, so I thought I’d link to a free article I wrote for the Performance Menu’s 64th issue.
“The acid-alkaline theory states that eating too much acidic food robs minerals from the bones, but it’s since been discovered that blood acidity is actually buffered by corrective measures in the urinary and respiratory systems. Because blood is normally slightly alkaline (7.4) and metabolism is acidic, the alkalinity of the blood is maintained by CO2 exhalation and by urinating (average urine pH is 5.9). So basically, if your pH is too acid or too alkaline, your body will compensate for it. You’ll breath out more or less CO2, or your urine will dump out either hydrogen or bicarbonate ions to maintain the proper pH level. ‘There is no requirement for food or minerals to balance the acid,’ Bergner stated.”