Nutrition is an important modifiable parameter, which can have a major impact on oral health. Poor nutritional status can adversely affect oral health and poor oral health can influence dietary intake and subsequently lead to malnutrition and oral health can play a crucial role in maintaining good nutrition. Interdisciplinary teams of general practitioners, dentist, nurses and dieticians working together can help assure that patients maintain good oral health status and adequate nutrition are maintained. To maintain health, the human body needs daily nourishment in the form of carbohydrates, proteins and minerals. The associations between oral health conditions, dietary practices and nutritional status, and general health status are complex with many interrelating factors. Inadequate nutrition can affect the oral health including dental caries, periodontal diseases, diseases of oral mucosa and infectious dis- eases. Compromised oral health can alter food choices and negatively impact food intake leading to suboptimal nutritional status which can lead to chronic systemic diseases. Recognizing and treating oral health and nutrition problems are important in improving the health and quality of life. This book provides an overview about the relationship between oral health and nutrition.