This lecture material discusses the concept of nutrition which includes the history of nutritional science, the meaning of nutrition, the function of nutrition, groups of nutrients; the role of nutrition in the life cycle which includes pregnant and breastfeeding mothers, fetuses and babies, toddlers, school age children, teenagers, adults and the elderly; Gzi for: health, intelligence, beauty, fitness and work productivity in individuals, families and society by reviewing accredited and/or reputable journals. The learning approach or method used in this course is lectures, presentations, group discussions, questions and answers and giving assignments in the form of journal studies, observation reports and journal reports.