Dr. Mark Evans is a Senior Scientist at Holland & Barrett, specialising in product development and evidence-based innovation. With experience as a University Lecturer and Performance Nutritionist, he translates complex research into practical guidance for diverse audiences. He has published peer-reviewed work on ingredients including exogenous ketones, beetroot juice and caffeinated chewing gum, presenting internationally on their effects on human performance. His expertise spans clinical trials, regulatory alignment and scientifically robust product development. At Holland & Barrett, he collaborates across teams to deliver validated health and wellness solutions, driven by a passion for advancing nutrition science for both elite performance.