Chris Hemsworth and the APOE4 gene: An in-depth look at genetic risks for Alzheimer's disease

Chris Hemsworth's genetic discovery

While filming the National Geographic series ‘Limitless’, Australian actor Chris Hemsworth, known for his role as Thor, discovered that he is a carrier of the APOE4 gene, which is associated with a higher risk of Alzheimer's disease. Hemsworth, whose grandfather suffers from the disease, underwent genetic testing that revealed he carries two copies of the gene, one from each parent.

What does APOE4 mean for Alzheimer's?

The APOE gene, which encodes the glycoprotein apolipoprotein E, plays an important role in the metabolism of fats in the body. The variant APOE4 has been associated with an increased risk of Alzheimer's disease. People with two copies of this gene have a significantly higher risk of developing the disease compared to those with other variants.

The science behind APOE4 and Alzheimer's

Research has shown that the APOE4 gene not only increases the risk of Alzheimer's but can also lead to an earlier onset of the disease. This gene affects the way cholesterol is transported in the brain and plays a role in the aggregation process of beta-amyloid, a protein characteristic of Alzheimer's disease.

The impact of APOE4 on Hemsworth's life

For Hemsworth, the discovery of his genetic predisposition was a turning point. It prompted him to make lifestyle changes and take preventive measures to reduce his chances of developing Alzheimer's. The actor has decided to take a break from his career and spend more time with his family.

Other health risks associated with APOE4

Besides Alzheimer's, the APOE4 allele has also been linked to an increased risk of cardiovascular disease. These findings highlight the importance of genetic testing in understanding personal health risks and influencing health decisions.

The dementia risk self-test forms the basis of your personalised prevention strategy to reduce your risk.