Synopsis We are happy to present to the readers the present edition of the book " Health and Happiness", a work on health by Sri Swami Sivanandaji Maharaj. This book gives a detailed and comprehensive idea about the fundamental laws of health and hygiene. It provides the key to real happiness, which can be achieved only through radiant health of body, mind and soul. The book has been divided into ten chapters. Nature's aid to health dietetic principles a detailed analysis of all the vitamins, physical culture (including Yoga exercises), ethical and spiritual observances and their influences on health home treatment of diseases, are some of its salient features. A separate chapter has been devoted to "Care of the Eyes". We trust that readers will be immensely benefited by perusing and following the precepts contained in this work.