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  • Cardiovascular Risk Factors May Predict Brain Changes, Cognitive Decline

    A study published this week in the journal Radiology suggests that subtle differences in regional brain volumes that appear to be related to cardiovascular risk factors may potentially serve as an early indicator of cognitive decline before the onset of dementia.

    Researchers from the Keck School of Medicine at the University of Southern California, Los Angeles, analyzed data from 1,629 participants in the Dallas Heart Study, aged 25 to 73, to investigate modifiable cardiovascular risk factors (alcohol consumption, smoking, diabetes, and obesity) associated with regional brain volume changes and their association with preclinical deficits in cognitive performance. Participants’ cardiovascular risk factors were evaluated in an initial baseline visit; brain volumes and cognitive function were assessed seven years later by, respectively, magnetic resonance imaging and the Montreal Cognitive Assessment (MoCA).

    The results showed that alcohol consumption and diabetes were associated with smaller total brain volume, while smoking and obesity were associated with reduced volumes in the posterior cingulate cortex. Lower hippocampal volume was associated with previous alcohol consumption and smoking, and lower precuneus volume correlated with alcohol consumption, obesity, and high fasting blood glucose numbers.

    Low total scores for MoCA were associated with reduced posterior cingulate volume in participants under 50 and with reduced hippocampal and precuneus volumes in those 50 and over.

    “Our findings reveal that lower total brain, hippocampal, precuneus,...

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