Abstract:
:Lifestyle contributes to inter-individual variability in brain aging, but previous studies focused on the effects of single lifestyle variables. Here, we studied the combined and individual contributions of four lifestyle variables - alcohol consumption, smoking, physical activity, and social integration - to brain structure and functional connectivity in a population-based cohort of 549 older adults. A combined lifestyle risk score was associated with decreased gyrification in left premotor and right prefrontal cortex, and higher functional connectivity to sensorimotor and prefrontal cortex. While structural differences were driven by alcohol consumption, physical activity, and social integration, higher functional connectivity was driven by smoking. Results suggest that combining differentially contributing lifestyle variables may be more than the sum of its parts. Associations generally were neither altered by adjustment for genetic risk, nor by depressive symptomatology or education, underlining the relevance of daily habits for brain health.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Bittner N,Jockwitz C,Mühleisen TW,Hoffstaedter F,Eickhoff SB,Moebus S,Bayen UJ,Cichon S,Zilles K,Amunts K,Caspers Sdoi
10.1038/s41467-019-08500-xsubject
Has Abstractpub_date
2019-02-06 00:00:00pages
621issue
1issn
2041-1723pii
10.1038/s41467-019-08500-xjournal_volume
10pub_type
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