1. High in calories and fat. Fried food itself is a food with high fat content, which is not conducive to digestion, which in turn affects the digestive function of the gastrointestinal tract, causing the accumulation of fat in the body, which can lead to the occurrence of obesity.

2. Poor sanitary conditions. The raw materials for making fried food are usually bad or already bad, and the oil used by vendors is unhygienic. Many unscrupulous vendors use waste oil or old oil that has been used repeatedly. Fried foods are cooked in a short period of time and are often undercooked, which not only fails to kill the pathogenic microorganisms carried by the food itself, but also causes the occurrence of intestinal parasites.

3. Increased toxins can cause cancer. The polymer dimers and trimers produced by repeated high-temperature heating of fats used in fried foods are highly toxic. Most fried foods contain high concentrations of acrylamide, which is a carcinogen.

4. Excessive food additives. Fried foods contain a large amount of trans fatty acids, leavening agents and pigments. Long-term consumption of trans fatty acids can damage the liver, hinder the body's metabolism, and increase the risk of cardiovascular disease and diabetes.

Excessive aluminum content in leavening agents causes the accumulation of aluminum in the body, which not only affects children's intellectual development and leads to Alzheimer's disease, but also causes bone damage and deformation, leading to rickets, osteoporosis, etc. The occurrence of diseases; excessive intake of pigments can cause a series of health problems such as chronic poisoning and acute poisoning.