The diet list is a list that is prepared for the individual and aims at healthy eating. While preparing the diet list, the ideal weight is calculated based on gender, age, height, weight and body mass index (BMI) and is created in line with the calories needed. Body mass index (BMI) is a measure of being underweight, normal, overweight or obese. It is calculated by dividing the body weight in kg by the square of the height in meters. According to this account, BKi; <20 kg/m² is considered underweight, 20-25 kg/m² is considered normal, 25-30 kg/m² is considered overweight, and >30 kg/m² is considered obese. The ideal BMI ratio varies with age.