What is the primary cause of obesity?

A hypercaloric diet, which refers to the consumption of more calories than the body expends, is a significant factor contributing to the development of obesity. When individuals consistently consume excess calories, the body stores this surplus energy as fat, ultimately leading to weight gain and, over time, obesity. This dietary pattern is commonly seen in individuals who consume highly processed foods, sugary beverages, and large portion sizes, which can easily contribute to an energy surplus. The impact of a hypercaloric diet on weight gain is particularly pronounced in a society where high-calorie food options are abundant and easily accessible.

Although factors like genetics, an inactive lifestyle, and metabolic syndrome can influence the risk of obesity, the primary driver of obesity is the balance between calorie intake and energy expenditure. Without the presence of an energy surplus due to excessive intake, significant weight gain and obesity would not occur, underscoring the pivotal role of a hypercaloric diet in this complex condition.