The hazards of trans fatty acids on the human body are easy to cause obesity, affect the development, easy to form blood clots, easy to cause coronary heart disease and so on. Trans fatty acids are a kind of fatty acids in food that are not good for human health, and it is generally recommended that the daily calories from trans fatty acids should not exceed 1% of the total calories from food, and the intake should be as low as possible. Trans fatty acids are commonly found in foods such as burgers, french fries, chicken fried steak, cookies, and cream, and have adverse effects on the human body when consumed in excess. For example, trans fatty acids are not easily digested and accumulate in the body, making it easy to cause obesity. It also affects the absorption of essential fatty acids in adolescents, which is detrimental to their normal development. Trans fatty acids will also increase the viscosity of the blood, easily lead to thrombosis, but also easy to increase the body’s low-density lipoprotein, inducing coronary heart disease. It is recommended to reduce the intake of trans fatty acids by reducing the intake of related foods to maintain the health of the body.