A landmark study published in Nature Communications Medicine reveals that maintaining a healthy lifestyle—especially good psychological well-being—dramatically reduces the risk of both cardiovascular disease (CVD) and dementia.
The research, based on data from over 350,000 participants in the UK Biobank, tracked individuals aged 40 to 70 for up to 16 years. Scientists assessed their adherence to “Life’s Crucial 9” (LC9), a group of nine modifiable health factors: diet, physical activity, smoking, sleep, body mass index, cholesterol, blood pressure, blood sugar, and psychological health.
Participants with higher LC9 scores—indicating healthier habits—had significantly lower risks of developing both CVD and dementia. Notably, those who developed heart disease but maintained healthier lifestyles were also less likely to progress to dementia.
Psychological health emerged as the single most influential factor, especially for those already living with heart conditions. For instance, people with atrial fibrillation and low mental well-being were found to have a 48% higher risk of developing dementia.
“These findings confirm that mental health is not only essential for emotional well-being but is also a key factor in protecting both heart and brain health,” the researchers stated.
The study underscores the importance of integrated public health strategies that address both physical and mental health to reduce the burden of chronic disease and cognitive decline.
Source: Nature
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Jisan Al Jubair
