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Hamish
Johnstone
Dietitian & Nutritionist
Registered Dietitian · Sports Nutritionist · Te Rarawa
Clinical expertise meets lived experience. 16 years helping people transform their health — backed by a career as a NZ Muay Thai champion and over 5 × 100-mile ultra-finisher.
Online & In-Person
Nutrition advice from someone who has lived it
I became a dietitian after struggling to balance making weight for combat sports, training hard, working full-time, and raising a young family. That experience — the pressure, the performance demands, the hormonal chaos — shapes every plan I make.
Whether you're managing a chronic condition, chasing a finish line, or simply trying to feel better in your body, I'll give you a realistic, personalised plan built around your actual life — not a textbook.
Read My Full Story
Three areas.
One specialist.
Evidence-based, personalised nutrition for the goals that matter to you.
Sustainable Fat Loss
No crash diets. No unsustainable restriction. Science-backed strategies that work with your biology, lifestyle, and cultural food preferences.
- Customised meal advice & nutrition analysis
- Science-backed, real-life strategies
- Improve your relationship with food
- Ongoing support & accountability
Performance Nutrition
From fight camp to 100-mile ultras — I've fuelled both. Whether you compete or train for the love of it, I understand what your body needs to perform and recover.
- Pre & post-workout fuelling strategies
- Endurance, strength & combat sports
- Evidence-backed supplement guidance
- 8 & 12-week performance packages
Diabetes Nutrition
12 years of specialist clinical diabetes experience — Type 1, Type 2, and Gestational. Practical, easy-to-follow advice that actually fits your day-to-day life.
- Type 1 & Type 2 tailored diet plans
- Carbohydrate education & meal structure
- Blood glucose management strategies
- Lifestyle intervention & long-term support
Free Discovery Call
15 minutes to discuss your goals, check I'm the right fit, and ask anything you want — completely free, no obligation.
"Fuel your fight, strengthen your life — whether the fight is a title bout, a 100-mile trail, or managing your blood sugar every day."
Results that speak
for themselves
"I contacted Hamish because I wanted to know if I was eating the right amounts and sorts of food to properly fuel my training for an upcoming ultra-marathon. Hamish sent through an analysis of my diet, where I was doing well and more importantly what I was missing out on. I couldn't be happier with the meal plan and the whole experience and the results."
"I contacted Hamish for a meal plan for my kickboxing camps, to ensure I was eating the right foods and being fuelled correctly while remaining on weight. As a vegan he was fantastic at accommodating my dietary needs. Always helpful and on hand for advice. 100% recommend."
"Couldn't be happier — excellent results, very workable plan for a very busy family and awesome friendly and professional service."
Ready to work
together?
Your journey to better health starts with a conversation. Book a free 15-minute discovery call — no obligation, no pressure. Just a chat about your goals and whether I'm the right fit.