Food and nutrition are common concerns among all people, and healthy nutrition is one of the most important topics in the world. Sometimes individuals may face problems that require them to consume specific food substances or avoid certain types of food; however, they themselves may be unaware and lack specialized knowledge about the nature of food substances. For this reason, it is necessary to consult nutritionists in order to provide them with the necessary guidance in this area. Nutrition experts provide the necessary services in this field to individuals who seek these services. Nutrition experts are knowledgeable about topics such as what food substances each individual needs and what a suitable diet is for them. Additionally, these individuals are familiar with various components present in food substances, such as minerals, vitamins, fats, and other substances, and are aware of the amount of each.