There is no single universal diet that works for every human. Your biology is unique — shaped by your autonomic nervous system balance, your cellular oxidation rate, your hormonal architecture, and your metabolic heritage. The NP Nutrition Phenotype Questionnaire identifies which of six distinct Metabolic Natures best describes your individual biochemistry.
This is not a general wellness quiz. Each question is grounded in the physiology of autonomic regulation, cellular metabolism, and neuroendocrine signalling. Your result guides the nutritional framework, macronutrient balance, and meal timing approach best suited to your individual biology.
How to answer
Answer based on how you typically feel and function when not acutely unwell — your baseline, not your best or worst days. There are no right or wrong answers. Your honest first response is always the most accurate. If genuinely unsure, choose the middle option and continue.
The 10 Assessment Domains
Domain 1
Appetite & Hunger Signalling
Domain 2
Macronutrient Response
Domain 3
Energy & Circadian Patterns
Domain 4
Stress Response Physiology
Domain 5
Sleep Architecture
Domain 6
Digestive Tolerance
Domain 7
Mood & Cognitive Function
Domain 8
Thermoregulation & Metabolic Rate
Domain 9
Exercise Response
Domain 10
Autonomic Physical Indicators
Before you begin
40 questions · approximately 10–12 minutes
Detective Health
NP Nutrition Phenotype Questionnaire
Section 1 of 100% complete
Detective Health
Metabolic Nature — Your Result
Send Your Result to Stephen
Your Metabolic Nature result is ready. Enter your email below and click Submit — your result goes directly to Stephen. No printing or saving required.
Your responses are transmitted securely to stephen@stephenduncan.co · Detective Health