Diet and nutrition are an extremely important part of health and well-being. With a certificate in nutrition, you can gain a broad understanding of the principles of nutrition and career training that will lead to a dynamic career with a bright future. Nutritionists and nutritional therapists recommend dietary modifications like losing weight to prevent allergies, lower blood pressure, and promote healthy eating habits as part of a health care program or a lifestyle change. In a nutrition certificate program, you learn about the components of food, their role in biochemistry, the healing and therapeutic effects of food, and the benefits of different types of diets. Positions are available in a hospital or nursing care facility, or in the community working as a consultant or for home health agencies. Obtaining a certificate through online education provides a choice of programs and greater flexibility about where and when you study.