Keris Marsden

Keris Marsden is a Registered Nutritionist and Director based in Greater London, specialising in female health, hormone health, and digestive health. She holds degrees in International Public Health and Nutrition from the University of Westminster and Biomedicine & Naturopathic Nutrition from CNM College of Naturopathic Medicine. Keris is Director and Clinical Nutritionist at Fitter Food, where she focuses on perimenopause, menopause, and sports nutrition. She uses evidence-based, personalised nutrition approaches with a paleo-inspired framework. Keris treats conditions including IBS, PCOS, hypothyroidism, and amenorrhea.

“Keris combines evidence-based nutrition with a flexible, personalised approach to help clients regain control of their health through sustainable lifestyle changes. Her work at Fitter Food reflects a commitment to empowering people with practical knowledge about nutrition, energising workouts, and easy-to-follow lifestyle habits that support long-term wellbeing. Drawing on her background in public health and naturopathic nutrition, Keris specialises in helping women navigate hormonal transitions and digestive challenges with compassion and clinical expertise.”