Andreea Nitescu is a UK-registered dietitian (HCPC) with a master’s degree in molecular biology from Staffordshire University, United Kingdom, and a member of the British Dietetic Association. Her work focuses on longevity, the gut microbiome, and precision nutrition, integrating genomic and metagenomic data to inform personalized health strategies. She is the founder of VEXA HEALTH LTD, a London-based company dedicated to precision-health approaches that combine microbiome insights derived from shotgun metagenomic testing with genetic and metabolic data to support lifespan extension and sustained vitality.