So what can lead to obesity? Some people may say that their family members are not overweight but they are obese. In fact, there are many causes of obesity, which may be environmental factors, endocrine factors, or genetic factors. In the article, there is a certain close relationship between obesity and hyperinsulinemia. When the body is resistant to insulin, in order to maintain normal blood glucose levels, it will lead to an increase in the amount of β cells to help lower blood sugar. (Eckel et al. , 2011) So it means that when people eat food and replenish energy, a lot of nutrients like carbohydrates and proteins are absorbed through the digestive system and transformed in the body. When the β cells begin to secrete insulin, blood sugar levels remain normal. But if people eat too much, excess nutrients are stored, which can lead to weight