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.