We all know that the cells in the brain are not renewable. So in the daily diet, we should pay attention to eat some food which is beneficial for the brain. In the following section, we will introduce five kinds of food which can promote the health of your brain.

1. Banana:
If you want to let the brain stay in the peak condition, you must supplement enough carbohydrates to your body. Because the carbohydrates that we absorb will break down into glucose, and the main energy source needed by our brain is glucose. Brain cells are different with other cells. They can only rely on glucose but can't use other energy sources. Expert suggest people eat banana to supplement carbohydrates. This is because banana contains a large number of pectin, which can release out glucose very slowly. This can make the blood sugar stay at a stable level, so as not to affect the nutrition supply to the brain.

2. Whole grains
Whole grains contain a variety of nutrients, including vitamin E and vitamin B group, folic acid, nicotine acid, and so on. Researchers have found out that, vitamin B group of can not only help the glucose to be fully utilized by human body, but also can promote the metabolism of protein. As a result, it is an indispensible nutrient to maintain the normal function of the brain cells. While folic acid is closely related with human memory and the development of nerves.

3. Oats
From the nutritional perspective, oat is called as "food for the brain". It contains great amounts of vitamin B, potassium, zinc and other minerals, which is very beneficial to the spatial memory and cognitive ability. At the same time, oats also contains soluble fiber, which can hinder the manufacturing and absorption of cholesterol in the body, and bring down the concentration of blood cholesterol, thus reducing the risk of heart disease, arteriosclerosis and stroke. All of these three diseases are the main causes of Alzheimer's Disease.

4. Deep-sea fish
About 60% of the brain is consisted by unsaturated fat, so eating more food rich in Omega-3 unsaturated fatty acid can keep the flexibility of the cell membrane, and make the function of nerve cells achieve a better state. The deep-sea fish oil contains a large number of Omega-3 unsaturated fatty acids, in which DHA is an important component of the cell membrane, especially the membrane of brain cells and retina cells. No matter in the function of cerebral cortex, the maintenance of memory, and even the brain development of embryos and children, DHA all plays an important role. Research has found out that, people who take in more DHA are less likely to suffer from Alzheimer's Disease.

5. Egg
Egg contains a large number of vitamin B group and high-quality protein, which has something to do with the growth of brain cells and nerve transmitters. At the same time, it is also rich in vitamin A, vitamin E, vitamin B6, vitamin B12, folic acid, zinc and other nutrients. A lot of studies have shown that long-term lack of vitamin B12 and folic acid can lead to memory impairment, and may even increase the risk of Alzheimer's Disease. What's more, egg yolk contains plenty of lecithin, which is the main raw material for the synthesis of choline in the body. An animal experiment also finds out that, lecithin can promote the production of new memory cells. Therefore, it is very beneficial for the health of the brain. In addition, soybean also contains a lot of lecithin, so it can also be used as a good food to invigorate the brain.