Linking heart and brain health
NEW research has found that having a higher risk of developing cardiovascular or heart disease appears to be linked with an increased risk of cognitive decline.
This suggests that looking after heart health could also help protect against dementia.
Carried out by researchers at Tianjin Medical University in China, the new study looked at data gathered from 1,588 dementia-free participants with an average age of 79.5 years.
The participants had all taken part in the Rush Memory and Aging Project for 21 years, which looks at chronic conditions associated with ageing, with a focus on cognitive and motor function decline, and the risk of developing Alzheimer’s disease.
The participants’ Framingham General Cardiovascular Risk Scores (FGCRS), which assess an individual’s future risk of cardiovascular disease, was calculated at the start of the study.
The participants were then categorised into the lowest, middle and highest groups according to their heart disease risk.
Every year during the study, the participants had their episodic memory (memory of everyday events), semantic memory (longterm memory), working memory (short-term memory), visuospatial ability (ability to identify visual and spatial relationships among objects) and perceptual speed (ability to accurately and completely compare letters, numbers, objects, pictures or patterns) assessed using 19 tests and given an overall score.
The findings, published Monday in the Journal of the American College of Cardiology, showed that the participants with a higher risk of developing cardiovascular disease also showed a faster decline in their episodic memory, working memory and perceptual speed.
In addition, after looking at MRI (magnetic resonance imaging) data for a subset of the participants, the team also found that a higher FGCRS was associated with smaller volumes of hippocampus