"Fountain of Youth Water" is a comprehensive guide to the understanding of water in general and of ionised water in particular. It makes you aware of its benefits for health and well-being which you can gain by neutralizing the daily oxidative stress and by alkalizing the body though regular drinking of alkaline ionised water. Dietmar Ferger is engineer, teacher and preventologist in Germany, he has been professionally involved with drinking water, health, detoxification and holistic concepts of health prevention for more than two decades. In 2002, he translated the book "Reverse Aging" by Sang Whang (¿) into German and introduced ionised water to Germany. Since then, he gave lectures and wrote articles about ionised water and its health benefits. The German version of this book is called "Jungbrunnenwasser" and is now in its 7th edition. He sees it as his task to inform scientists, politicians, therapists and consumers about ionised water and its potential for the rehabilitation of our prohibitively expensive public health, for the prevention of increasing lifestyle and geriatric diseases and for the optimization of human health and zest for life. As a member of the Presidium of the German Naturopathy Society, the oldest association of its kind in Europe, Dietmar Ferger is also a staunch advocate of naturopathic concepts, but open to modern treatments using the natural forces of electricity and water. Next to an introduction to the latest knowledge in water science, a guide to a holistic understanding of your body, its organs and its way of functioning, and naturopathic advice how to improve your health and prevent lifestyle-diseases, this book does not only contains a comprehensive FAQ section with answers to many questions asked during nearly two decades, but also nearly 50 coloured illustrations and drawings to help to understand the topics. It also explains the history of ionised water, the development of water ionisers, their technical details and way of functioning. Nobel laureate Albert Szent-Györgyi M.D., wrote that "ageing symptoms ... are always associated with a slow shrivelling of our living tissue, accompanied by damage caused by reactive oxygen species (ROS)" - we know today that alkaline ionised water permanently hydrates the body tissues and neutralizes ROS with gaseous hydrogen. So it is certainly not presumptuous to call it "Fountain of Youth Water" ... Soviet scientists even called it "The Water of Life". The ionisation of water is a "treatment" of water with electric energy, being among the most significant developments in the diverse "water markets" since the development of reverse osmosis technology. It is interesting to note that the intense Soviet Russian research on ionised water was simply stopped after the collapse of the Soviet Union, and that the development in Japan and Korea led to technical perfection over decades without anyone in the West noticing. Mainly Japanese studies have shown that alkaline ionised water and hydrogen water are not only simple and effective methods of prevention - if prevention is not only understood as a series of more or less meaningful vaccinations or preventive screenings for early detection of diseases -, but also supportive in the treatment of lifestyle and geriatric diseases. The ignorance towards ionised water has far-reaching consequences for nature and the environment, because the use of anolyte and catholyte in agriculture and animal breeding and also the use of anolyte as a highly effective and side-effect free disinfectant in hospitals and - as in the fight against the corona virus in China - in fighting epidemics would avoid the use of antibiotics and chemical disinfectants, which in the long term and persistently contaminate water, soil and the environment. Therefore, read and recommend this book to help to understand the benefits of ionised water for health and nature.