Eating too many doughnuts may increase the risk of Alzheimer’s disease and have certain adverse effects on the body, so long-term or excessive consumption of doughnuts is not recommended. Doughnuts contain alum and a large amount of fat. Among them, alum is a traditional food improver and puffing agent, the chemical composition is potassium aluminum sulfate, containing aluminum ions. Excessive intake can affect the body’s absorption of iron, calcium and other nutrients, which may lead to osteoporosis, anemia and even affect the development of nerve cells after long-term excessive intake. In addition, doughnuts adsorb a large amount of repeatedly used grease, long-term consumption is likely to lead to arteriosclerosis and other cerebrovascular diseases, and thus induce dementia. Therefore, in daily life should pay attention to reduce the intake of unhealthy food, such as fried greasy products, and can prevent dementia by the following ways: 1, healthy diet: you can eat more nuts, such as hazelnuts, walnuts, etc.. Since they are rich in plant protein and unsaturated fatty acids, they can better protect the cardiovascular system and reduce the occurrence of Alzheimer’s disease; 2, moderate exercise: it is recommended to maintain regular exercise 4-5 days a week, which can help protect the blood vessels and prevent Alzheimer’s disease; 3, educational games: you can do more educational games, such as idiom solitaire, charades, etc., which can activate the brain and slow down the aging process and prevent Alzheimer’s disease. speed and prevent Alzheimer’s disease.