Obesity; In developed societies, one out of every three people is obese and one is overweight. Obesity; It also causes coronary diseases, functional limitations, osteoarthritis, sleep apnea, gallstones, fatty liver and premature death. Since obesity (excess weight) is difficult to treat and reverse, it is recommended not to take it first. Having a healthy weight from an early age is an easier and more effective approach than returning to the ideal weight after obesity develops in later ages. Sleeping less than 7 hours a day is a risk factor for the development of obesity in the later period. Nutrition; A healthy diet contributes to a longer and better quality of life. Optimal dietary habits lead to a significant decrease in the incidence of chronic diseases such as coronary diseases, diabetes and obesity. In his study, decreases are observed in calcium, vitamin E, zinc and protein intakes with advancing age. Parallel to this, in the 21st century, it has been noticed that the Mediterranean diet is associated with a longer and healthier life. The traditional Mediterranean diet, which includes nuts such as olive oil, vegetables, fruits, walnuts and hazelnuts, seems to provide the necessary criteria for a healthy diet.