Do you forget the required date after a certain period of time, the call of a favorite song or can't remember the key even after searching for the key in your drawer which was kept some time ago ? No wonder. There are so many types it's hard to say. Have you ever tried to figure out why this happens ? Much depends on our daily eating habits. " Unfortunately, our brains are fragile , " says clinical researcher Neil Bernard in his book, Nutritious Food for the Brain . He blames this fragile state of the brain for memory loss. The hope, however , is that he mentions these types of foods in his book for the development of this fragile state of the brain. Your daily diet may include a variety of foods. But in many cases you are not aware of their proper nutritional value. Here are 6 nutritious foods that are known to play an important role in the physical structure of your brain. 1. Blueberries: The different varieties of blueberries are rich in antioxidants and other nutrients that lead to the formation of your brain, explains Neil Bernard. A study conducted by the University of Cincinnati found that regular consumption of blueberries increases the ability of the brain to master. These blueberries and strawberries are also capable of developing women's talents. 2. Grapes: Grapes are one of the most popular foreign fruits. A similar study by the University of Cincinnati found that grapefruit juice enhances the ability to absorb, as well as plays an effective role in solving complex problems such as short-term memory. So he talked about using grapes for breakfast , light snacks or salads in the afternoon. 3. Sweet Potatoes: Many people eat sweet potatoes as a vegetable. It is also at the top of Okinawa's food list in Japan , which helps them to be intelligent and long-lived. These ground-grown vegetables are very orange in color , rich in beta carotene. It is also a powerful anti-oxidant that ensures the protection of our brain. 4. Cocoa: Nutritionist Joy Bayer says that one cup of hot cocoa powder can easily rejuvenate you and play a vital role in keeping your brain active. Cocoa contains powerful antioxidants that help keep blood flow normal by softening arteries. It is much more beneficial for the brain. 5. Salmon: 70% of your brain is fat or fatty acids. Fatty acids produce omega 3 in the brain, known as DHA acid. Salmon is one of the most important sources of fat for the brain. DHA protects the brain from oxidative and inflammatory damage. Moreover, as the capacity of the neurons increases, so does the efficiency of the brain cells, and as a result, you become more intelligent. . Cashew Nuts: Neil Bernard said that cashews contain a lot of vitamin E which helps in making antioxidants. He noted in a study conducted on 5,400 adults in the Netherlands over a ten-year period that those who included cashew nuts on a regular diet had a 25% lower risk of other diseases , including Alzheimer's and dementia. Each ounce of cashew nuts contains 7.3 milligrams of vitamin E and plenty of calories, so Neel recommends eating at least one ounce or one handful of cashew nuts per day. . Spinach: People who regularly eat this kind of spinach have improved muscle mass. But Baron says such greens contain a lot of vitamin B , which contributes to the protection and development of your brain . A three-year study conducted in the Netherlands found such information. Therefore , for the protection and development of the brain, the most important organ of the body, you can put the 6 foods mentioned above in your food list.