A client who regularly consumes significant amounts of alcohol is prescribed cyanocobalamin (Nascobal) and states, “I don’t understand why my health care provider has prescribed B 12 injections.” The nurse’s response would be based on which physiological concept? 1. Clients who regularly consume large amounts of alcohol are often deficient in this nutrient. 2. Alcohol facilitates folate metabolism in the liver, which destroys vitamin B 12 . 3. Clients who regularly consume large amounts of alcohol are at high risk for neutropenia, a condition that develops from vitamin B 12 loss. 4. Liver cirrhosis caused by large amounts of alcohol inges tion diminishes natural physiological deposits of B 12.