Betty Cruickshank who is 94 and from Aberdeenshire (Scotland) says â€œhard workâ€ and â€œeverything in moderationâ€ is key to living a long life. This book takes this as its foundation and builds on it. As a basic premise, the author of this book believes there is no such thing as a harmful food, drink or product on the market. Cigarettes are deemed as dangerous, but Betty Cruickshank smoked until she was 50 and now she is 94, so they canâ€™t be as dangerous as most people think. The key is â€œeverything in moderationâ€. If you smoke, quit as soon as you can or are able to for a long, fulfilling life with the best chance of reaching 100 years old. Moreover, the author of this book believes that in order to live life to the full devoid of fractures and serious diseases you need optimum levels of Vitamin D, the sunshine vitamin. This book seeks to offer guidance for how to best maintain an optimum Vitamin D level.