a homeless man is brought into the emergency room with muscle weakness, loss of coordination and tachycardia. he has alcohol on his breath. he may be suffering from a deficiency of

He's developing vitamin B12 deficiency

Explanation:

People who avoid eating foods that are rich in vitamin B12 — meat, dairy, poultry and fish — are more likely to have a deficiency. Even if you're eating the right foods, hormonal changes, digestive problems and diminishing muscle mass can make it tough for your body to absorb the vitamin B12 it needs

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