According to a number of scientific studies, the food we eat has a substantial impact on our health. Dietary changes can help prevent or control a variety of health problems, including obesity, diabetes, and some cancer and heart disease risk factors. Dietetics is the study of the effects of diet and nutrition on human health. Dietetics has a heavy emphasis on public health and is dedicated to informing all Americans about the significance of eating healthy foods. Dietitian experts assist people improve their health by using nutrition and food science. Dietitian nutritionists and nutrition and dietetic technologists collaborate to give treatment and consultation to patients. General nutrition education can be provided by both dietitian nutritionists and nutrition and dietetic technologists. Dietitians oversee food preparation and delivery, devise adapted diets, participate in research, and educate individuals and groups on healthy eating habits. Dietitians' responsibilities include providing medical nutritional intervention, as well as obtaining, safely preparing, serving, and advising on flavorful, appealing, and nutritious food for patients, groups, and communities. Dietetics includes dietary modification to address medical disorders with food intake (the study of nutrition as it relates to health).