Dr Mulgan has practiced as a doctor in New Zealand and the U.K. for twenty five years. For the last ten years he has concentrated his efforts on aged care facilities. He has founded a multi-doctor practice that specialises in this area. His experiences have led him to investigate the causes of ageing and strategies for remaining well while getting older. In particular, he has developed an interest in the science and practice of functional foods. The formula for Lifeguard Essentials is the result of his research.