Fat generally refers to the excessive accumulation of fat in human body or animals, which is a form of body storage, but excessive accumulation may lead to obesity and health problems. Especially in modern society, people eat too much and don't exercise, which leads to the obesity problem becoming more and more common. Therefore, we should keep scientific diet and exercise habits, maintain moderate weight, and maintain a healthy living condition.

Fat not only refers to the accumulation of fat in human body and animals, but also can be used to describe the size and thickness of certain items or things. For example, in the food field, some ingredients or dishes will be particularly popular because they look fat and thick, which seems to be more satisfying to people's appetite. At the same time, this state will also show the texture and value of an item. For example, thick cotton-padded jacket will be considered as high-grade by many people.

Although fat usually has a negative meaning, it can also have some positive factors in some occasions. For example, in some American cultures, fat is regarded as a symbol, and some obese and happy people often laugh at themselves and are proud of being obese. In addition, in the field of music and fashion, fat is sometimes called a trend or style, indicating an independence and anti-tradition. Therefore, the meaning of obesity needs to be analyzed and understood according to the cultural background and occasions.