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You may have read about "alkaline diets" that claim that you need to eat only alkaline...

You may have read about "alkaline diets" that claim that you need to eat only alkaline foods in order to remain healthy. According to this philosophy, eating acidic foods "acidifies the blood," leading to disease. But our blood has several buffer systems in place. Explain what happens when buffers encounter additional hydrogen ions from foods. Will the pH of the blood decrease?

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When the food is acidic; there is increase in the hydrogen ion concentration in the blood.But the bufferd ensure that the blood pH does not change.The most important buffer system is the bicarbonate buffer system.

HCO3- + H+ -------> H2CO3

H2CO3------> H2O + CO2

So pH of the blood remains unaltered.

There are other buffers like plasma protein buffer.In long term ; the kidneys excrete more H+ and reabsorb more HCO3- to maintain the normal blood pH.

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