A nutritionist is a medical specialist whose job is to advise patients regarding the impacts of food and nutrition on their overall health. They are also known as nutrition scientists, dietitians, clinical nutritionists, sports nutritionists, community nutritionists, or public health nutritionists, depending on their location and work setting. They can also work as independent entrepreneurs offering their services in hospitals, schools, and other settings and environments. The role of nutritionists is growing more significant as the obesity rate continues to reach record highs.