Weekly Egg Consumption May Reduce Alzheimer’s Risk

A new study suggests that adding just one egg a week to your diet could do more than boost your protein intake it might also help protect your brain from Alzheimer’s disease.

The Research Behind the Claim

Researchers followed 1,024 older adults in the Chicago area for an average of 6.7 years, tracking their egg consumption and cognitive health. The findings, published in The Journal of Nutrition, revealed that those who ate one or more eggs weekly had a 47% lower risk of developing Alzheimer’s dementia compared to those who rarely ate eggs.

Brain autopsies from 578 participants also showed that egg eaters had less buildup of harmful proteins associated with the disease. While earlier research hinted at cognitive benefits from eggs, this is the first study linking weekly consumption to both reduced Alzheimer’s risk and healthier brain pathology.

Nutrients That May Play a Role

Eggs are nutrient-dense, offering:

• Choline: Supports nerve signaling and brain cell structure; accounted for about 39% of the observed protective effect in the study.

• Omega-3 fatty acids: May help reduce brain inflammation.

• Lutein: Linked to cognitive function and eye health.

• Vitamin B12 & folate: Important for brain and nerve health.

• Protein: Supports overall body function and repair.

Researchers found the lowest Alzheimer’s risk at a choline intake of roughly 350 mg per day, equivalent to about two to three large eggs.

The Cholesterol Question

Eggs do contain cholesterol, which has led to past concerns. However, recent research suggests eggs may actually lower LDL (“bad”) cholesterol for some individuals. Those with high cholesterol should consult their healthcare provider before increasing intake.

How Much Is Enough?

The study did not set a strict recommendation, but it emphasized consistent, moderate consumption. Including eggs as part of a balanced diet could be an affordable, accessible way to support long-term brain health.

Key Takeaway

One egg a week may seem small, but the steady supply of choline and other brain-boosting nutrients could help reduce Alzheimer’s risk over time. As with all dietary changes, it’s best to tailor egg intake to your personal health profile.

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