Passionate about food , nutrition and your health

Gillian Killiner oversees the Fit for life nutrition clinic.  Gillian is one of the UK’s leading award-winning Dietitians who not only provides personalised specialist advice on diet and health, but also analyses blood test results to ensure nutrient levels are optimal determining the most appropriate programme for each individual. She believes in fixing people from cellular level up and a team approach.

Specialist dietary advice and support is provided to help individuals maximise their health, manage medical conditions and improve performance in all aspects of life.

The clinic offers a knowledge-led expert approach to food and dietetics, and highly qualified to advise on diet as a treatment for a wide range of serious medical conditions and offer individualised programmes for improving performance in sport or professional life and for weight management.

We also provide a service for those not sure if their diet is right for them. This preliminary chat provides a free assessment and direction on what changes can be made for optimal health.


Patients are typically self-referral, referred by a GP Practitioner or Consultant and we have long-established partnerships with many practitioners, hospitals and medical centres in the Northern Ireland. Most health insurance policies now provide some level of dietetic cover, so please do get in touch for more information as we can help you with this.


Nutritionist BelfastBefore your initial consultation, we require you to complete a 7-day food diary and lifestyle questionnaire. This provides us with a clear knowledge and understanding of your needs before we first see you.

Nutritional Programme

Belfast NutritionistShould you wish to progress with a treatment package we will prepare an individualised diet and lifestyle plan for you. This will be in written format and emailed to you.


Your first appointment will include a review of the pre-assessment findings, a body composition assessment and an outline of the treatment options available to you.


We will review your progress and re-assess periodically, helping you on your journey.

At Fit for Life Nutrition, we develop bespoke diets for a wide range of conditions, whether hereditary, lifestyle or disease driven.

Visit our educational section to read a comprehensive list of what we work on.