A new study published in The Journal of Nutrition suggests an association between egg consumption and a lower risk of Alzheimer’s dementia in adults. The findings are significant given that the prevalence of Alzheimer’s disease is expected to increase as the population ages.
The study, which involved community-dwelling older adults in the United States with no apparent dementia, indicated that consuming more than one egg per week was associated with a 47% reduction in the risk of developing Alzheimer’s disease. The study included 1,024 older adults with a mean age of 81 years, whose dietary habits and other factors were taken into account as part of the analysis.
The researchers reported that the choline content of eggs was the primary driver of the relationship between egg consumption and Alzheimer’s risk. Eggs are one of the few widely consumed foods rich in choline, a nutrient currently being studied to better understand its role in supporting cognitive development in infants and young children, as well as its maintenance throughout the ageing process.
This study adds to the growing body of evidence that dietary choices can have a significant impact on reducing the risk of Alzheimer’s disease and supporting lifelong cognitive health. It also builds on earlier research which had found that even limited egg consumption (one per week) is linked to slower memory decline compared to individuals who did not consume eggs. However, this is the first time a research study has suggested an association between egg consumption and Alzheimer’s risk, and highlights the potential of simple dietary interventions to support normal brain health.
The results are encouraging, but there are limitations to bear in mind. Alzheimer’s dementia is a complex disorder. These data show an association with a lower risk of Alzheimer’s dementia, but do not establish a causal relationship. This study relied on self-reported dietary data from participants, which may have included inherent errors. Further research is needed to confirm these relationships in other diverse populations.