This book presents latest information and exhaustive and up-to-date exposition of nutrition and food requirements during different stages of life cycle and during various disease conditions. It describes in detail the nutritional and food requirements for adults, infants, children, adolescents and ageing persons. It explains the nutritional and food requirements of expectant and lactating mothers. It highlights the correct diet in cases of fever, obesity, anaemia, diabetes mellitus, ulcers, food sensitivity and diseases of the gastrointestinal disorders, heart, liver and kidneys. Includes chapters on diet in cases of cancer and genetic disorders. Importance is given to adjuncts to diet therapy like physical activity for all age groups and conditions in line with lifestyle modifications. Food is valued not only for its nutritive value but also for its health value. The role of functional foods is discussed in all the chapters. It also gives recent advances in food, nutrition and drug interaction and a special emphasis on nutritional management in aids. All topics are explained in simple and systematic manner, supported by relevant illustrations, and tables. Over all preventive nutrition is emphasised along with therapeutic nutrition. With all these features this is an essential textbook for undergraduate and postgraduate courses on nutrition and dietetics. This book is ready reckoner for practicing dietitians and a reference book for medical and paramedical. This book would also be extremely useful to the general public as an authoritative reference source. This multi colour book is not only attractive but also effective in learning the subject.