Alzheimer's Disease is a condition that impacts a person’s brain. This can cause changes in memory and behavior. Alzheimer’s primarily impacts people aged 65 and older, and worsens over time. As of 2023, an estimated 6.7 million people in the United States are impacted by the condition. Alzheimer's is caused by irreversible damage to the brain cells, which causes the cells to not function properly. Scientists are still trying to find a solution for this disease, as well as preventative measures people can take prior to reaching an at risk age. Recent studies show that walnuts may be key in preventing conditions causing cognitive decline, including Alzheimer's Disease.
The reason for this is that walnuts are rich in a variety of antioxidants, such as polyphenol, vitamin E, and folate. Antioxidants are substances that protect cells from damage from molecules called free radicals. Damage from the free radicals can cause inflammation in the body, which can cause further damage to the cells. What makes walnuts special is that they have the highest polyphenol levels compared to other nuts. Furthermore, they also have other nutrients, such as omega-3 fatty acids, which also have anti-inflammatory properties. Since cell damage and inflammation are key contributors to cognitive decline, walnuts are theorized to be important for maintaining brain health.
There are many studies supporting the theory of walnut consumption being key in Alzheimer’s prevention. In a study titled “The Walnuts And Healthy Aging Study,” elders in Spain were to have a diet incorporating walnuts for two years. The researchers measured the impact of the diet by having the participants take a neurocognitive test, as well as a brain MRI, at the beginning and end of the study. This study concluded that walnuts had no impact on the brain health in healthy elders. However, in participants more at risk, the study showed that walnuts did slow cognitive decline.
This theory is still developing with ongoing research. However, the studies have been promising in showing that something as simple and easy as incorporating walnuts into the diet can be a preventative measure against Alzheimer’s Disease. Assessed and Endorsed by the MedReport Medical Review Board