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About

Stephen Duncan

Working with people since 1988. In Edinburgh since 1993. An FDN-P since 2009.

Stephen Duncan

I’m a functional diagnostic nutrition practitioner and a personal trainer. Most of my clients are in mid-life and want to feel well, move without pain and stay strong for the decades ahead. Many have been told their tests are “normal” but still don’t feel right.

How I work

Reading test results is one part of the job. The bigger part is what happens when the plan meets real life: where the rubber hits the road. That’s where experience counts.

In training, it means changing the session on the spot for pain, stiffness, a bad night’s sleep, stress, or a day when someone needs to let off steam. Sometimes that’s slow, precise technical work; sometimes it’s hard physical work, with bodyweight, kettlebells, Swiss balls, bands or boxing pads. Even when a client turns up not in the mood, my job is to get the right work done, and most leave glad they didn’t cancel.

In nutrition, it means working out what someone will actually do, then adjusting as their results and their life change. I plan nutrition and movement together, so the plan agrees with itself.

Background

Training and qualifications

FDN-P since 2009 · BSc (Hons) Developmental Biology (Glasgow) · MSc Coaching Studies & Applied Physiology (Heriot-Watt University) · Working with people since 1988 · Testing first since 1994

BSc (Hons) Developmental Biology (Glasgow). PG Dip. MSc Coaching Studies & Applied Physiology (Heriot-Watt University). FDN-P. Neurogistics Certified Brain Wellness Practitioner. I’ve trained with Reed Davis (FDN), Bill Wolcott (metabolic typing), Bryan Walsh (biochemistry) and Paul Chek (movement). Author of the Test, Don’t Guess books and Metabolic Natures, Volume 1.

Who I’ve worked with

Hundreds of clients over nearly forty years, including physiotherapists, osteopaths, chiropractors, personal trainers, and Pilates and yoga teachers, as well as people who’d never trained in their lives.

How I treat evidence

Every recommendation on this site carries its evidence grade. My own working targets are labelled as mine. When I get something wrong, I say so: see Corrections and What I Got Wrong.

Where and how

At your home in the Edinburgh area, by video or by phone. Test kits post anywhere in the UK and abroad.

Book a free 20-minute call →

Or email stephen@detective-health.com.