Meet your dietitian

Lauren NashAccredited Practising Dietitian · APD

Lauren Nash is an Accredited Practising Dietitian (APD) and the Founder of UP Dietitian. Based in Perth, Lauren specialises in sports nutrition for everyday to elite athletes. Working in-person and online, Lauren has supported athletes locally and internationally in endurance, team, weight-category and strength-based sports. Lauren maintains a strong focus on helping athletes optimise performance while supporting long-term health.

Lauren is passionate about helping individuals fuel smarter to maximise training adaptations, improve recovery, manage gut issues and build confidence around race-day nutrition. Her approach is evidence-based, practical and realistic, translating complex sports nutrition science into strategies that fit real life. She strongly believes food should be viewed as fuel, not something to fear, overthink, or restrict.

Whether working with elite competitors or recreational athletes chasing personal goals, Lauren aims to help clients build a healthy and sustainable relationship with food alongside performance outcomes.

Outside of the clinic, Lauren is an endurance athlete herself and understands firsthand the demands of balancing training, recovery and everyday life. She has completed multiple Ironmans, Ironman 70.3 and marathons - experiences that continue to shape both her perspective and practice as a sports dietitian. UP Dietitian was created to help athletes fuel with more confidence, clarity and purpose, without overcomplicating nutrition.

Lauren's specialty areas

Sports PerformanceEndurance SportBody CompositionCrossFitS&CCombat SportsCompetition NutritionInjury RecoveryCoeliac Disease

Lauren Nash — Sports Dietitian & Founder of UP Dietitian

Lauren Nash racing the run leg of an Ironman in UP Dietitian kit

Client Testimonials

Athlete Stories.

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Jemma W

Endurance Athlete

Lauren has supported me through 2x Ironman 70.3s, 2x standard triathlons, 1x marathon and my first Ironman. The confidence I gained was knowing my body was being looked after — correct fuelling meant I could breeze through changing training loads with no injuries and minimal fatigue. She creates a race day fuel plan specific to how your body responds, and carries herself with so much kindness. Couldn't recommend UP Dietitian enough.

Jemma W

Endurance Athlete

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Nick C

Endurance Athlete

I approached Lauren after chronic cramping and poor nutrition during my first 70.3. Since then she's done my fuelling plan for 3x Ironman 70.3s, 3x Ironman (NZ, Austria, Challenge Roth), Ultraman Australia and the Rottnest Channel Swim Solo. Lauren is the best in the business — professional, personable and knows exactly how to tailor a strategy for you. I'd never go into a race without her guidance.

Nick C

Endurance Athlete

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Eimear D

Professional MMA Athlete

Lauren has helped me through back-to-back professional fight camps and made keeping on top of nutrition in and out of camp so easy. Weight cutting in combat sports can be dangerous and Lauren always keeps my health at the centre of our work. She's educated me on fuelling correctly to perform at my best while maintaining a positive body image — something I felt strongly about. If you have Lauren in your corner, you'll achieve your goals.

Eimear D

Professional MMA Athlete

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Cam W

Triathlete

I engaged with Lauren before my first triathlon at T100 Gold Coast after realising my sessions were always cut short or completed with poor execution. Lauren has completely changed my life with how I fuel for races and how I fuel for overall wellbeing. I've since signed up for Cairns Ironman and Lauren will be on board — I can't wait to see how well I perform with the best nutrition under her guidance. I no longer worry about cutting sessions short or gut problems. My nutrition levelled UP ✅

Cam W

Triathlete

Nutrition insights with Lauren