Your blood type is often overlooked in everyday life, but it might hold clues to your cognitive health. Recent studies have shown an interesting links between specific blood types and the risk of cognitive decline, including dementia. Many people don’t even know what their blood type, if they do not get any bloodwork done or donate anything. Blood types are categorized based on specific proteins, or antigens, on the surface of red blood cells. For instance, people with type A blood have the A antigen and the B antibody in their plasma. The Rh factor, either positive or negative, further categorizes blood types. But can your blood type be an indication of any diseases or risks you have? While your blood type doesn't significantly impact your daily life but it can influence your risk of developing certain health conditions. For example, people with type O blood are more likely to develop ulcers, while those with type A blood are more prone to heart disease. Blood Type and Cognitive HealthA 2014 study published in the Neurology showed a link between blood type and cognitive decline. People with type AB blood seem to have an 82% higher risk of developing memory and thinking problems compared to those with type O blood. This may be due to higher levels of certain proteins in their blood that can affect blood clotting and inflammation. However, it's important to note that these are just associations, and more research is needed to fully understand the connection between blood type and cognitive decline.Blood type is also related to other heart related conditions like stroke, so the findings highlight the connections between vascular issues and brain health. The study also identified higher levels of Factor VIII, a clotting protein linked to cognitive decline and dementia, in individuals with AB blood type. What Corelation Does AB Blood Type Have With Brain Function?Although the AB blood type is relatively rare in the United States, it doesn't automatically guarantee the development of dementia. While some studies have linked specific blood types to cognitive decline, others have yielded conflicting results. For example, a 2017 study in Medical Science Monitor suggested a higher risk of postoperative cognitive dysfunction, which means decline in your cognitive function after surgery, in older adults with type A blood. On the other hand, a 2015 study in PLoS One that was done with 1.5 million participants, found no significant link between blood type and dementia. It also suggested that there is a lower risk for people over 70 with the type A blood compared to type O.Other Factors To ConsiderA 2022 meta-analysis in Neurology found that people with blood types A, B, and AB tend to have more proteins in their blood that can cause clotting compared to those with type O. These blood types are also linked to proteins that affect inflammation and blood vessel health. The ABO gene, which determines what blood type you will have, is also associated with proteins influencing inflammation and poor blood flow to the brain can lead to cognitive decline, this could explain why certain blood types might be associated with a higher risk of dementia.While you can't change your blood type, you can take steps to protect your brain health. A healthy lifestyle, including a balanced diet, regular exercise, and managing stress, can significantly reduce your risk of cognitive decline, regardless of your blood type.A balanced diet rich in fruits, vegetables, whole grains, and lean protein can help to protect your brain health. Regular exercise, such as walking, swimming, or biking, can also help to improve cognitive function.