The study looked at data from more than 200,000 people, aged 60 or above, and of European ancestry in UK Biobank. The international research team identified those who had been diagnosed with the cardiometabolic conditions diabetes, stroke, a heart attack, or any combination of the three, and those who went on to develop dementia.
Within this study population, researchers found that the more of these three conditions a person had, the higher their risk of dementia. People who had all three conditions were three times more likely to develop dementia than people who had a high genetic risk.
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Dementia is a major global issue, with predictions that 135 million worldwide will have the devastating condition by 2050.
Many studies look at the risk of a single condition concerning dementia, but health is more complex than that. We know that many patients have a range of conditions.
This study tells us that for people who have a diagnosis of diabetes, stroke, or a heart attack it is particularly important to look after their health and ensure they are on the right treatment, to prevent further problems as well as to reduce their dementia risk.
The team divided the 200,000 participants into three categories of genetic risk from high to low, based on a comprehensive risk score reflecting multiple genetic risk traits relevant to individuals of European ancestry.
They also had brain imaging data for over 12,000 participants and found widespread damage across the brain for those with more than one cardiometabolic condition. By contrast, the high genetic risk was linked to deterioration only in specific parts of the brain.
What’s Good For Your Heart Is Also Good For Your Head
The research indicates that protecting the heart throughout life likely also has significant benefits for the brain. To look after your heart, you can engage in regular exercise, eat a healthy diet and do everything possible to ensure blood pressure, blood sugar and cholesterol levels fall within guidelines.
The evidence is clear that a person’s risk of developing dementia is a complex mix of their age, their genes, and aspects of their lifestyle. In this study, researchers looked at data from a population of 60 years and older, including whether they had particular heart conditions, information about their genetics, and how these affected their risk of developing dementia.
They found that people with multiple heart health conditions were even more likely to develop dementia than people who had an increased risk of Alzheimer’s disease due to their genetics.
These findings reiterate the importance of treating the causes of poor heart health, not just for its own sake, but also for the added benefit in terms of reducing the number of dementia cases. If anyone is worried about the health of your heart or your brain, please speak to your doctor.
Source: Medindia
