In Coherent Health, Dr Downing explains the science of sunlight and water, what you can do to stay healthy and well, and to age gloriously, by making best use of its properties, the different disorders and problems that can be helped by light and water, and dos and don'ts of photo-bio-modulation (light therapy). While light can treat just about anything, it is not the only treatment you should use. As this book shows, the key is to get everything working optimally together - that is Coherent Health.

Dr Damien Downing MB MS, MSB practises Ecological Medicine (aka Functional Medicine) - a systems approach to health based on understanding how things influence one another within a whole. He is President of the British Society for Ecological Medicine and was for 20 years Editor of the Journal of Nutritional and Environmental Medicine. He serves on the Editorial Board of the Orthomolecular News Service. Prefiguring Coherent Health, his 1988 book Daylight Robbery pioneered our understanding of how vital sunlight and vitamin D are for health. His book The Vitamin Cure for Allergies was released in 2010, and The Vitamin Cure for Digestive Disorders in 2013. In addition to the effects of sunlight, he has particular interests in membrane lipids and lipid therapy, mitochondrial dysfunction and environmental toxic effects.