ByDORON KUPERSTEINMAY 28, 2026 12:00In recent years, more and more studies indicate that the food we eat does not only affect weight or heart health, but also the brain. Processes such as memory, concentration, and cognitive function are closely linked to what we put on our plate.Now, a large-scale study joins this body of research, bringing a particularly intriguing finding: Regular consumption of eggs may be linked to a lower risk of developing Alzheimer's.Years of monitoring and data drawing attentionThe study, which lasted more than 15 years and included close to 40 thousand participants, examined the connection between dietary habits and the development of Alzheimer's.When the researchers analyzed the data, they found that people who ate eggs regularly had a lower risk of developing the disease compared to those who consumed almost no eggs.Those who ate eggs two to four times a week reduced the risk by about 20 percent, while those who consumed eggs five times a week or more recorded a decrease of about 27 percent.Another interesting finding was that even a consumption that is not particularly high was still linked to an advantage. That is, even people who did not consume eggs on a daily basis, but only a few times a week, enjoyed a certain reduction in risk.This figure strengthens the hypothesis that this is not a dramatic effect of an extreme amount, but perhaps a cumulative contribution over time.Why is eating eggs so effective?The researchers point to several nutritional components that may explain the link between eating eggs and preventing Alzheimer's. One of the central components among them is choline, a substance the body uses to produce acetylcholine: An important neurotransmitter involved in memory and learning processes.Systems in the brain based on acetylcholine are among the first to be damaged in Alzheimer's disease, and therefore there is great interest in nutritional components that can support this activity.In addition, eggs also contain lutein and zeaxanthin, pigments with antioxidant activity, which can accumulate in brain tissues and help reduce oxidative damage. Such damage is considered one of the possible factors in the development of degenerative diseases.Certain fatty acids found in it also contribute to the structure of cell membranes in the brain and assist in transmitting signals between nerve cells.Why it is important to look at the full pictureDespite the encouraging findings, the researchers emphasize that this is an observational study. That is, it points to a connection but does not prove causality.People who ate eggs regularly had a lower risk of developing the disease compared to those who consumed almost no eggs (credit: Shutterstock / New Africa)It is highly possible that people who consumed the same food regularly also led a healthier lifestyle in general. For example, the study population was characterized by relatively good health habits, such as low smoking rates and a more balanced diet.These factors can influence the risk of the disease no less than the diet itself.A disease that is expanding worldwideAlzheimer's is one of the most common and complex neurological diseases in the Western world. It constitutes a major cause of cognitive decline in older age, and its rates are expected to rise significantly in the coming decades.In the UK alone, for example, estimates speak of close to a million people living with dementia today, with the number expected to grow significantly by the year 2040.The meaning is that finding ways to reduce the risk, even slightly, could have a very broad impact at the public level.Not a magic solution but part of a puzzleThe central message arising from the study and the accompanying data is that there is no single food that can prevent complex diseases like Alzheimer's. This is a long–term process influenced by a wide variety of factors.However, diet certainly constitutes a part of the puzzle. A combination of quality nutritional components over time may contribute to maintaining brain health, especially when it is part of an overall healthy lifestyle.For most people, the meaning is not a radical change but a reinforcement of principles that are already familiar. A diverse diet, including quality proteins, healthy fats, and vitamins, is the foundation.When combining this with physical activity, sufficient sleep, and stress management, a cumulative effect is achieved that can contribute to general health and also to brain health.The study presents an intriguing link between dietary habits and a reduced risk of Alzheimer's, but does not provide unequivocal proof. It does reinforce the understanding that our daily choices have long–term significance. Even if there is no single solution that prevents diseases, there are certainly habits that can improve the chance of keeping a brain as healthy as possible over the years.Follow us on Google