Introduction: When it comes to the benefits and effects of walnuts, the first thing that comes to mind is probably nourishing the brain. But why can walnuts nourish the brain? The reason is not because they look like a brain, but because they contain nutrients that can nourish the brain.
Why can walnuts nourish the brain? The elderly might answer like this: Because walnuts look like the human brain, they can nourish it. From a scientific perspective, the idea of "using shape to supplement shape" has no scientific basis, but walnuts can indeed nourish the brain for the following reasons:
1. Antioxidants
In daily life, the human body is in constant contact with the outside world and exchanges substances, which leads to the production of free radicals. Scientific research shows that excessive free radicals are linked to cancer, aging, and other diseases. Antioxidants can inhibit the formation of free radicals in the body. Some antioxidants are synthesized by the body itself, while others are supplied by food. Scientists have found that every 100 grams of walnut meat contains 20.97 units of antioxidants. When the body absorbs these antioxidants from walnuts, it can be protected from many diseases.
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2. Walnuts contain lysine in their protein
Lysine is one of the essential amino acids for the human body. It promotes human development, enhances immune function, and improves the function of the central nervous system. A lack of lysine can lead to symptoms such as fatigue, weakness, nausea, vomiting, dizziness, delayed development, and anemia. However, lysine cannot be obtained from daily staple foods and is easily destroyed. The protein in walnuts contains lysine, which can promote human growth and development, improve intelligence and memory, and alleviate insomnia.
3. Walnuts contain linoleic acid in their fat
Linoleic acid is an essential fatty acid that cannot be synthesized by the human body. It can lower blood lipids, soften blood vessels, lower blood pressure, and promote microcirculation. It can prevent or reduce the incidence of cardiovascular diseases and is particularly beneficial for the prevention and treatment of hypertension, high blood lipids, angina pectoris, coronary heart disease, atherosclerosis, and senile obesity.
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4. Walnuts are rich in Vitamin B and E
Vitamin B is an essential nutrient for human tissues and is key to the energy released from food. It acts as a coenzyme, participating in the metabolism of carbohydrates, proteins, and fats in the body. Vitamin E can prevent cellular aging and is beneficial for brain health, enhancing memory, and delaying aging.
5. Lecithin
Lecithin, also known as vitellin, is hailed as the "third nutrient," alongside proteins and vitamins. In brain nerve cells, lecithin accounts for about 17% to 20% of their mass. It can boost brain vitality, eliminate brain fatigue, enhance memory, and improve learning and work efficiency. Moreover, it can repair damaged brain cells and prevent the onset of senile dementia.
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