Several recent scientific studies suggest that walnuts may have benefits for long-term brain health and cognitive function. Some foreign studies have shown that increasing the intake of nuts, especially walnuts, can improve the cognitive ability of middle-aged and elderly people.
Higher nut intake was associated with improvements in memory, cognitive flexibility, information processing speed, and overall cognitive function. Another 3-year study showed that eating virgin olive oil + 30 grams of nuts (15 grams of walnuts, 7.5 grams of almonds, 7.5 grams of hazelnuts) per day compared to eating only virgin olive oil without nuts or eating a low-fat diet can continuously increase the concentration of brain-derived neurotrophic factor in plasma, which has the effect of fighting depression and cognitive deterioration caused by aging.
From these points of view, adding some walnuts or walnut oil to the diet can indeed have beneficial effects on the body, which in turn can indirectly promote a healthy state of brain function.
Why might walnuts play such a healthy role? According to relevant research in the United States, walnuts have the strongest antioxidant capacity among all kinds of nuts. In addition to vitamin E in the nuts, the main reason is that the layer of brown skin wrapped around the nuts is rich in polyphenols. Brain tissue is very sensitive to oxidative damage, and an adequate intake of antioxidants is necessary.
At the same time, walnuts also contain alpha-linolenic acid, which can be converted into DHA in the body, and this component is very important for the brain development of infants and young children, and it is also important for the elderly to delay brain aging. Therefore, there is a material basis for the saying "Walnuts invigorate the brain".
It should be noted that the scientific community does not have an accurate definition of "Bunao". The expectations of ordinary consumers for "brain supplementation" are: to improve intelligence, quickly relieve brain fatigue, and enhance learning and workability. The main research area of science is the "development" and "aging" of the brain. This is not in line with consumer expectations.
Studies have found that long-term eating of nuts such as walnuts can improve some indicators related to brain function, which is not the same as the expected "brain-enhancing" function of walnuts. So far, there is no direct research evidence that eating walnuts can improve people's IQ in the short term, or improve test scores.
Moreover, most people's intelligence peaks around the age of 20 to 30, and it is difficult to improve after that. The right diet, including a small daily intake of nuts such as walnuts, does help delay the aging process of the brain and reduce the risk of diseases including stroke. But the effect of "reacting quickly, remembering better, and running up intelligence" immediately after eating is just a beautiful image of ours.
All in all, walnuts are a nutritious nut. Eating a small amount of nut food every day is very beneficial for improving cardiovascular and cerebrovascular-related indicators.
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