A new study conducted by American researchers has found an association between blood group and memory loss in later stage life.
According to the scientists, AB blood which is a rare blood type has close link with the problem of memory loss in later life.
About 4 percent of the total population are said to have AB blood group. As per the study, these people appear to be at higher risk of developing thinking and memory related troubles than those with other blood type.
The study was based on previous research works showing blood group may impact heart-related risk.
The study was conducted by a US-based research team under the leadership of Dr Mary Cushman from the University of Vermont College of Medicine, Burlington.
For the study, they involved about 30,000 adults from the United States who belonged to the age group 45 and above and their data were analysed by the researchers.
The researchers identified 495 participants who suffered problems in their ability to think and memorize or developed cognitive impairment during the three-year study period.
These participants were then compared to the 587 participants without any cognitive problems.
The researchers found that the participants who had rare AB blood type contributed to the formation of 6 percent of the group having cognitive impairment. On the contrast, population belonging to other blood groups just made up 4 percent of the group.
Talking about the study, Dr Cushman said, “Our study looks at blood group and risk of cognitive impairment, but several studies have shown that factors such as high blood pressure, high cholesterol and diabetes increase the risk of cognitive impairment and dementia.”
According to the researchers, the main idea of the study is to highlight that blood group are associated with certain health problems or have a upper hand for particular diseases over one another. For instance, blood group ‘O’ may give a lower risk for cardiovascular disease.
“Blood group is related to other vascular conditions like stroke and heart attack. The findings, hence, highlight the link between vascular health issues and brain health,” Dr Cushman said while adding, “More research work is needed to confirm these results.”
Dr Simon Ridley, head of research at Alzheimer’s Research, UK, concluded the study saying we didn’t intend to look at risk of dementia as in-depth study and research work are required to come to a conclusion that AB blood group is linked to a higher risk of the condition.
The study’s findings have been published in the journal Neurology.