Final answer:
The nurse should teach the patient with peptic ulcer disease to eliminate drinking alcohol as it can worsen the symptoms and delay healing.
Step-by-step explanation:
Based on the diagnosis of peptic ulcer disease (PUD), the nurse should provide the teaching point that eliminating drinking alcohol would be beneficial for the patient. Alcohol consumption can worsen the symptoms of PUD and delay the healing process. Therefore, it is important for the patient to avoid alcohol to minimize the symptoms and allow the ulcer to heal.