Dr Hayley O’Neill, PhD is a biomedical scientist and nutritionist specialising in metabolism, body composition, and weight management, with a focus on women’s health through midlife and menopause. Drawing on her expertise in indirect calorimetry, dietary assessment, and evidence-based lifestyle interventions, Hayley’s research and clinical work aim to optimise health outcomes and reduce chronic disease risk. Passionate about translating science into practical strategies, she empowers individuals and communities to build sustainable healthy habits and thrive through every life stage.