Genetic correlations of psychiatric traits with body composition and glycemic traits are sex- and age-dependent

Hübel, Christopher and Gaspar, Héléna A and Coleman, Jonathan R I and Hanscombe, Ken B and Purves, Kirstin and Prokopenko, Inga and Graff, Mariaelisa and Ngwa, Julius S and Workalemahu, Tsegaselassie and O'Reilly, Paul F and Bulik, Cynthia M and Breen, Gerome and Knight, Jo (2019) Genetic correlations of psychiatric traits with body composition and glycemic traits are sex- and age-dependent. Nature Communications, 10 (1). ISSN 2041-1723

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Abstract

Body composition is often altered in psychiatric disorders. Using genome-wide common genetic variation data, we calculate sex-specific genetic correlations amongst body fat %, fat mass, fat-free mass, physical activity, glycemic traits and 17 psychiatric traits (up to N = 217,568). Two patterns emerge: (1) anorexia nervosa, schizophrenia, obsessive-compulsive disorder, and education years are negatively genetically correlated with body fat % and fat-free mass, whereas (2) attention-deficit/hyperactivity disorder (ADHD), alcohol dependence, insomnia, and heavy smoking are positively correlated. Anorexia nervosa shows a stronger genetic correlation with body fat % in females, whereas education years is more strongly correlated with fat mass in males. Education years and ADHD show genetic overlap with childhood obesity. Mendelian randomization identifies schizophrenia, anorexia nervosa, and higher education as causal for decreased fat mass, with higher body fat % possibly being a causal risk factor for ADHD and heavy smoking. These results suggest new possibilities for targeted preventive strategies.

Item Type:
Journal Article
Journal or Publication Title:
Nature Communications
Uncontrolled Keywords:
/dk/atira/pure/subjectarea/asjc/3100
Subjects:
ID Code:
139969
Deposited By:
Deposited On:
09 Jan 2020 15:20
Refereed?:
Yes
Published?:
Published
Last Modified:
16 Sep 2020 06:04