2A Vernon Avenue, Clontarf, Dublin 3 087 119 2939 nutrition@calista.ie

Evidence-based nutrition advice from an experienced Dietitian in Dublin and online across Ireland.


Calista Nutrition was established in 2005 by Margaret Donnelly, a professionally qualified Dietitian and Nutritionist, providing diet and nutrition advice for a wide range of clinical conditions and for everyday health.

Consultations are available in person in Clontarf, Dublin 3 and online throughout Ireland.

Nutritionally balanced meal prepared with fresh vegetables, grains and salmon Margaret Donnelly, Dietitian and Nutritionist, Calista Nutrition
30+ years’ experience
CORU-registered Dietitian
Member of the Irish Nutrition and Dietetic Institute
In-person & online consultations

How Calista Nutrition can help


Nutrition consultancy for companies and institutions — advisory services for organisations.

Margaret Donnelly, Dietitian and Nutritionist, Calista Nutrition

About Margaret Donnelly


Margaret is a Dietitian and Nutritionist with over thirty years of experience.

  • Dietitian and Dietetic Manager at Mater Private Network Dublin for over twenty-five years.
  • Consultant Dietitian to the Allergy Clinic at Blackrock Clinic for sixteen years.
  • Former Clinical Lecturer in Dietetics at TUD (previously DIT); also worked at St. James’s Hospital Dublin.
  • Trained FODMAP Dietitian, King’s College London.

Read more about Margaret →

Our approach

We take the time to listen and understand you as an individual. Advice is client-centred, practical and achievable — informed by current scientific evidence — so you can make confident, informed decisions about your diet and health.

Individual & client-centred · Evidence-based & practical · Supportive & sustainable

Ready to take the next step?

Book a consultation by phone or send a message today.