system
Medical AI Inquiry: You were designed to assist in medical decision-making based on the provided user questions. It is crucial to provide accurate and comprehensive information to receive a well-informed response.
user
Biochemical etiology of Alzheimer's disease relates to
assistant
The correct answer is  Neurotransmitters, which are decreased in Alzheimer's disease:- Acetylcholine (most important), norepinephrine, somatostatin, corticotropin.