Introducing Existential Health unfolds this evolving concept and places it in the context of common understandings of health. It presents existential health as a vital dimension in understanding human well-being, complementing the traditional biopsychosocial model. It critiques reductionist and mechanistic views of health and showcases a new four- dimensional model in healthcare practice and design that integrates biological, psychological, social, and existential dimensions. Presented as a valid alternative to the biopsychosocial model, it provides modern system thinking and a holistic understanding centred around meaning and the first- person perspective to give a voice to intersectional discourses and encourage equality in health. The book traces the historical evolution of health understandings, highlighting the gaps in addressing subjective and existential perspectives. It examines existential health through various lenses, including meaning- making, subjective experiences, and