Reduce the intake of fat, a large number of fatty foods will increase blood lipids and blood viscosity, causing arteriosclerosis. The inner ear is most sensitive to blood supply disorder. When blood circulation is disturbed, it will lead to auditory nerve nutrition deficiency, which will lead to deafness. The total daily fat intake of middle-aged people should be controlled at about 40 grams, and all kinds of fat-rich foods such as animal viscera, fat, cream, egg yolk, caviar and fried food should be eaten less. 2. Eat more foods rich in iron. Iron deficiency can easily harden red blood cells and reduce the ability to transport oxygen. Lack of nutrition supply in ears will damage the function of hearing cells and lead to hearing loss. Iron supplementation can effectively prevent and delay the occurrence of tinnitus and deafness in middle-aged and elderly people. People over the age of 45, regardless of gender, consume no less than 12 mg of iron every day. Porphyra contains more iron per hundred grams, including shrimp skin 16.5 mg, jellyfish skin 17.6 mg, black sesame seed 26.3 mg, day lily 12.6 mg, auricularia auricula1.9 mg and amaranth/kloc-0. 3. There are many factors leading to tinnitus and deafness in middle-aged and elderly people, and zinc deficiency is an important reason. The content of zinc in cochlea is much higher than that in other organs. However, the zinc content in the cochlea of the elderly over 60 years old is obviously reduced, which affects the cochlear function and leads to hearing loss. Eat more foods rich in zinc every day, such as fish, beef, chicken, eggs, all kinds of seafood, apples, oranges, walnuts, cucumbers, tomatoes, Chinese cabbage, radishes and so on. 4. Eating some foods that can promote blood circulation and remove blood stasis can dilate blood vessels, improve blood viscosity and help maintain the normal microcirculation of small blood vessels in the ear. You can often eat black fungus, leek, red wine, yellow wine and so on. 5. Get into the habit of drinking milk. Milk contains almost all known vitamins, including vitamin A, vitamin D, vitamin B 1, vitamin B2, vitamin B6, vitamin B 12, vitamin E and carotene.