Marcela Fiuza, RD, MSc

Consultant dietitian, Marcela Nutrition, UK
Work Experience: 10+ years in nutrition

“Through my work as a dietitian, I aim to help people prevent diseases and optimize their health through diet and lifestyle interventions. I am particularly passionate about improving the quality and accessibility of information in order to empower women and break taboos associated with women’s health to address the gender gap in our health care systems.”

Career Highlights

  • Founder and consultant dietitian at Marcela Nutrition, London, UK, 2015–present
  • Senior cystic fibrosis dietitian at St. Bartholomew Hospital, London, UK, 2017–2021
  • Specialist cardiothoracic dietitian at Royal Brompton Hospital, London, UK, 2014–2017
  • Pediatric dietitian at Royal Brompton Hospital, London, UK, 2013–2014
  • Pediatric dietitian at Royal London Hospital, London, UK, 2013
  • Media spokesperson for the British Dietetic Association, featured on BBC One’s “Food: Truth or Scare,” ITV’s “Food Unwrapped,” and frequently seen in publications including Women’s Health, HELLO!, ID, The Financial Times, BBC News, and The Independent.
  • Member of the British Dietetic Association (BDA), Health Care and Professional Council, Maternal and Fertility Subgroup of the BDA, and Freelance Dietitians Subgroup of the BDA


  • European Society for Clinical Nutrition and Metabolism LLL Programme in Clinical Nutrition and Metabolism, 2016
  • Postgraduate diploma in nutrition and dietetics from King’s College London, UK, 2013
  • Master of Science in nutrition from King’s College London; awarded the Kellogg’s Prize for the best MSc nutrition project, UK, 2011
  • Bachelor of Science in human nutrition, first class honors, from the University of Westminster, 2010

Featured Publications

  • “Melanin Concentrating Hormone in Peripheral Circulation in the Human.” Journal of Endocrinology, vol. 232, no. 3, Mar. 2017, doi: 10.1530/JOE-16-0240.
  • “The Role of Parenteral Nutrition in the Surgical Cardiothoracic Patient: A Case Study.” NHD Magazine, no. 114, May 2016 (Link to case study
  • “Polymeric or Peptide: What Is the Best Feed for ECMO Patients?” Abstract. Clinical Nutrition, vol. 34, no. 1, Sep. 2015, doi: 10.1016/S0261-5614(15)30207-7.
  • “An Interesterified Palm Olein Test Meal Decreases Early-Phase Postprandial Lipemia Compared to Palm Olein: A Randomized Controlled Trial.” Lipids, vol. 49, no. 9, Sep. 2014, doi: 10.1007/s11745-014-3936-1.

My Journey in Nutrition

Growing up, I knew I wanted to work in health care. As I began to understand the role of diet and lifestyle in preventing disease and optimizing well-being, I knew dietetics would be the perfect career path for me. 

After completing my education, I was fortunate to start my career working at a leading National Health Service hospital in London. I had the opportunity to learn from incredible experts in a range of clinical specialties, including cardiovascular disease and Type 2 diabetes. These noncommunicable diseases are driven by lifestyle factors such as poor diet and physical inactivity, which means they are largely preventable.

This experience helped me realize that my real passion is to help people prevent disease in the first place. So in 2015, I founded Marcela Nutrition with the goal of spreading knowledge about how you can take care of your health through a balanced diet. I offer consulting to individuals and businesses, host workshops and educational sessions, and write about health topics for different brands.

In addition to prevention, other specialties of mine include healthy aging and women’s health. I am particularly interested in digital technologies for improving access to health information and regularly work with companies on product development. I love collaborating with brands such as Flo so I can share evidence-based nutrition content that will reach and hopefully empower so many people all over the world. 

Fun Facts

When I am not working, I am usually hanging out with my family (I have two sons). I love doing Pilates and yoga and try to exercise as often as I can. I also enjoy going to the cinema, traveling, and cooking. 

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