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Long-term scientific study reveals how nutrients in eggs can directly impact brain health, reduce oxidative stress, and influence the prevention of neurodegenerative diseases
In recent years, the search for strategies to prevent neurodegenerative diseases, such as Alzheimer’s, has gained momentum in science and public health. In this context, a simple and accessible food has returned to the center of discussions: the egg. The information was published by the “Journal of Nutrition,” based on a robust study that followed over 40,000 people for 15 years, providing relevant evidence on the relationship between egg consumption and the reduction of disease risk.
According to the researchers, Alzheimer’s cases were diagnosed by doctors based on Medicare records, ensuring greater data reliability. Furthermore, the study analyzed egg consumption in various forms, including scrambled, fried, boiled eggs, and even those present in processed foods and baked goods.
Therefore, the result is noteworthy: consuming eggs regularly can significantly reduce the risk of developing Alzheimer’s, especially in people aged 65 or older. This data reinforces the importance of diet in brain health throughout life.
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Egg nutrients and their direct impact on brain health
To understand why eggs can help prevent Alzheimer’s, it is essential to analyze their nutritional composition. Eggs are rich in choline, an essential nutrient that acts as a precursor to acetylcholine, a neurotransmitter fundamental for memory and synaptic function.
Furthermore, egg yolks concentrate phospholipids, which account for almost 30% of the egg’s total lipids. These compounds play a crucial role in the functioning of neurotransmitter receptors, directly influencing communication between neurons.
Another highlight is omega-3 fatty acids, known for their anti-inflammatory and protective effects on the brain. In addition, eggs contain lutein and zeaxanthin — carotenoids that accumulate in brain tissue and help reduce oxidative stress, a factor directly associated with aging and the development of neurodegenerative diseases.
Thus, the combination of these nutrients transforms the egg into a strategic food for maintaining cognitive health. In other words, it is not just a basic food, but an important ally for healthy aging.
Egg consumption can reduce Alzheimer’s risk by up to 27%
The numbers presented in the study are clear and reinforce the relevance of moderate egg consumption. According to researchers at Loma Linda University Health, people who consume about one egg per day, for at least five days a week, show a reduction of up to 27% in the risk of developing Alzheimer’s.
Furthermore, even less frequent consumption has shown significant benefits. Eating eggs 2 to 4 times a week is associated with a 20% reduction in risk, while consuming them 1 to 3 times a month reduces this risk by 17%.
These data indicate that small dietary changes can have significant long-term health impacts. However, experts emphasize that consumption should be balanced and part of a healthy diet.
Eggs also help with body composition and weight control
In addition to brain benefits, another recent study, published in the scientific journal Clinical Nutrition, analyzed the relationship between egg consumption and body composition. The research involved 355 people aged 18 to 30, divided into groups according to consumption frequency.
The results showed that individuals who consume at least five eggs per week have a lower body mass index (BMI) and a lower body fat percentage. This is mainly due to the high concentration of proteins in the food, which contribute to greater satiety and better metabolism.
Thus, the egg stands out not only as an ally for brain health but also as an important component for those seeking to maintain or improve body composition.
An accessible, nutritious, and sustainable food
Another relevant point is the cost-benefit of eggs. According to researchers, the food is considered one of the cheapest sources of animal protein, in addition to providing iron, vitamin A, vitamin B12, folate, choline, and riboflavin.
Furthermore, eggs also stand out for their sustainability. Its production has a lower environmental impact compared to other sources of animal protein, making it a strategic option for both health and the environment.
Another important fact is that the cholesterol present in eggs is not significantly absorbed by the body. Thus, studies indicate that moderate consumption does not negatively impact blood cholesterol levels.
Study limitations and expert recommendations
Despite the promising results, researchers highlight that the study is observational. That is, although there is an association between egg consumption and a reduced risk of Alzheimer’s, further studies are still needed to prove a direct cause-and-effect relationship.
Even so, experts like Jisoo Oh, associate professor of epidemiology at Loma Linda University’s School of Public Health, emphasize the importance of looking at health broadly.
According to her, eggs should be part of a balanced diet and not be seen as an isolated solution. Therefore, healthy habits, such as a balanced diet, physical activity, and stress management, remain fundamental.
Do you already frequently include eggs in your diet, or do you plan to change your habits after learning about these benefits?
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