Relationship between BMI and emotion-handling capacity in an adult Finnish population: the Northern Finland Birth Cohort 1966

Background Alexithymia, a difficulty in identifying and expressing emotions, has been associated with obesity and eating disorders in small-scale cross-sectional studies. Here, we assess the relationship between body mass index (BMI) and alexithymia in a large cohort of free-living Finnish adults ov...

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Bibliographic Details
Published in:PLOS ONE
Main Authors: Ramzi, NH, Yiorkas, AM, Sebert, S, Keinanen-Kiukaanniemi, S, Ala-Mursula, L, Svento, R, Jokelainen, J, Veijola, J, Auvinen, J, Miettunen, J, Dovey, TM, Jarvelin, M-R, Blakemore, AIF
Format: Article in Journal/Newspaper
Language:English
Published: Public Library of Science (PLoS) 2018
Subjects:
Science & Technology
Multidisciplinary Sciences
Science & Technology - Other Topics
TORONTO-ALEXITHYMIA-SCALE
BINGE-EATING DISORDER
SOCIODEMOGRAPHIC VARIABLES
GENERAL-POPULATION
ANOREXIA-NERVOSA
OBESITY
PERSONALITY
PREVALENCE
DEPRESSION
HEMISPHERE
MD Multidisciplinary
General Science & Technology
Northern Finland
Online Access:http://hdl.handle.net/10044/1/64170
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000446000200023&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
https://doi.org/10.1371/journal.pone.0203660
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Summary:Background Alexithymia, a difficulty in identifying and expressing emotions, has been associated with obesity and eating disorders in small-scale cross-sectional studies. Here, we assess the relationship between body mass index (BMI) and alexithymia in a large cohort of free-living Finnish adults over a 15-year period. Methods Participants were drawn from the Northern Finnish Birth Cohort 1966 (NFBC1966). The 20-Item Toronto Alexithymia Scale (TAS-20) was used as a measure of alexithymia and was completed at the age of 31 years (31y: n = 4841), and 46 years (46y: n = 5404). BMI was recorded at both time points. Where data at both time points were available (n = 3274), the relationship between changes in BMI and TAS-20 over this time period was also investigated. Results BMI was significantly and positively associated with TAS-20 score (p<0.0001, both at 31 years and at 46 years of ages). The association remained statistically significant after adjustment for potential confounders (sex, marital status and several socio-economic indicators). In individuals who experienced the greatest change in BMI (in either direction) over the 15-year period, there was a modest mean increase in TAS-20 score. Conclusions Our data revealed that TAS-20 score was correlated with and co-varied with body mass status. We suggest that future clinical research should consider the role of alexithymia in obesity. Further investigation of this relationship is warranted to ensure that the needs of obese subjects with undiagnosed alexithymia are considered in the design of weight management programmes.

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