Science Advisory Team

All our advice comes from our team of qualified doctors, dietitians, nutritionists and geneticists.

Head of Nutrition and Genetics
Dr Yiannis Mavrommatis

Head of Nutrition and Genetics

Dr Mavrommatis has been with Nell since the beginning and was responsible for developing our Nutrition & Fitness test. He is also the Programme Director and developer of the pioneer MSc Nutrition and Genetics at St Mary’s University (the only university course of its kind in the UK, and one of only four in the world).

At Nell, Dr Mavrommatis works on reviewing the scientific evidence behind our health areas.

Science Product Associate
Isabela Ramos

Science Product Associate

Isabela is a registered Dietitian (CRN Brazil) and registered Nutritionist (AfN) in the UK. She recently completed a MSc in Nutrition & Genetics at St Mary’s University, focusing on blood glucose management in non-diabetic populations. She also obtained a MSc in Sports and Exercise Nutrition at Westminster University with a focus on genetic factors on athletic performance.

Isabela combines her knowledge in nutrition, genetics and sports science to further develop the content of Nell's report to ensure our customers receive the best lifestyle advice for them.

Medical Advisor
Dr Gavin Ralston

Medical Advisor

Along with being a Medical Advisor at Nell, Dr Ralston is a GP and Senior Partner at Lordswood Medical Group, trained at Birmingham Medical School. Gavin has also worked in the NHS, chairing a clinical commissioning group for over 6 years.

He has also been involved with the British Medical Association on their GP Executive Committee.