A good brain can provide good memory, great intelligence and logic thinking for you. Therefore, it is necessary for you to protect your brain and improve the functions. Some foods contain various essential nutrients to nourish the human brain. These foods mainly include carrot, fish, tomato, walnut and spinach. 

It is known to all that carrot plays an important role in improving the eyesight. In fact, carrot can improve both the eyesight and the brain at the same time. The luteolin contained in carrot can help you improve memory and alleviate the age-related slowness of brain. Therefore, you can frequently eat carrot in your daily life.

Fish can help you improve the cognitive ability by providing fish oil for your body. What’s more, the omega-3 fatty acid contained in fish can defer the decline of cognitive ability for you. That is to say, fish oil and omega-3 fatty acid can work together to improve your brain. Nowadays, the old can be probably attacked by Alzheimer's disease. They can increase the intake of fish to prevent and alleviate the disease. In addition, vitamin B12 contained in fish is also effective in improving the brain and curing Alzheimer's disease.

Tomato contains abundant . Lycopene is an effective antioxidant to resist free radicals and oxidation, which can defer the aging of brain. Oxidation and free radicals can also hurt your skin. Therefore, you can also eat tomato to defer the aging of skin and enhance the immunity. The foods like watermelon also contain abundant lycopene.

Walnut contains a lot of antioxidants which can effectively protect your brain cells. According to the research, the adequate intake of walnut can effectively defer the aging for the brain cells. Thus, the memory and thinking can be improved at the same time.

Spinach contains abundant vitamin C and vitamin E. Both vitamin C and vitamin E are strong antioxidants to resist oxidation for human body and protect the brain from the damage of free radicals. They can defer the aging of human body and accelerate the reproduction of cells, which can not only activate the functions of brain and prevent the premature aging of brain. In addition, the old can improve their eyesight by eating spinach and absorbing vitamin A and carotene.

The foods mentioned above contain beneficial nutrients your brain needs to defer the premature aging of brain and prevent senile dementia. In order to protect your brain, you can frequently eat such foods in your daily life.