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What are the upper and lower limits of the pH of blood in a normal person? What causes fatality due to pH change?

Humans have a very narrow range of pH in their blood. It ranges from 7.35 to 7.45. It does not take much change either way for the patient to feel symptoms. The reason it affects us is that it interferes with the way your enzyme systems function. Recall that enzymes become denatured at acidic or basic pH's. Even a small change in pH affects its ability to function correctly.


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