Heavy smoking linked to atrophy in Alzheimer’s brain regions

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New MRI research reveals that heavy smoking can shrink key brain regions tied to memory and cognition, and excess weight might intensify the damage, raising fresh questions about dementia prevention.

man holding smoking a cigarette in handStudy: Smoking predicts brain atrophy in 10,134 healthy individuals and is potentially influenced by body mass index. Image credit: fongbeerredhot/Shutterstock.com

A recent study in Npj Dementia investigated the relationship between smoking and brain atrophy and whether body mass index (BMI) influences this association. The study found that smokers had significantly lower gray and white matter brain volumes than non-smokers. When BMI was included in statistical models, the relationship between smoking pack-years and brain volume…



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