Metabolic acidosis happens when the chemical balance of acids and bases in your blood gets thrown off. Your body:
Is making too much acid
Isn't getting rid of enough acid
Doesn't have enough base to offset a normal amount of acid
When any of these happen, chemical reactions and processes in your body don't work right.
Although severe episodes can be life-threatening, sometimes metabolic acidosis is a mild condition. You can treat it, but how depends on what's causing it.