Nutrition is the study of nutrients in food and their influence in maintenance, growth and reproduction of an organism. It also studies the role of nutrients in disease prevention. A balanced diet replete with all essential nutrients is necessary for avoiding various deficiency syndromes and prevention of health-threatening conditions like obesity, cardiovascular diseases, diabetes, etc. This book is compiled to provide an in-depth knowledge of the different perspectives and standards of effective nutrition plans, physical activity and their effects on health. This book presents researches and studies performed by experts across the globe. Nutritionists, doctors, physical instructors and interested students will find this book to be a valuable source of information for furthering their knowledge of this field.