1. Tony is 55 years old and has been an alcoholic for years. Suddenly today he cannot remember how old he is or how to get to back to his house. He is unable to see clearly to read his newspaper. When he picks up his coffee cup his hand shakes. When he walks his legs are uncoordinated. When he goes to the doctor, his blood pressure is low. What specific disease is he likely to have? What vitamin/mineral is he deficient in?