The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis

ObjectiveIn psychiatric disorders, lifestyle factors are known to influence both the development and course of the illness. However, little is known about the longitudinal relationship between lifestyle factors and OCD symptom severity, including the potential bidirectional, prospective association...

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Main Authors: Johanna A. M. du Mortier, Anton J. L. M. van Balkom, Jos W. R. Twisk, Patricia van Oppen, Henny A. D. Visser
Format: Article
Language:English
Published: Frontiers Media S.A. 2025-07-01
Series:Frontiers in Psychiatry
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Online Access:https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1552691/full
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author Johanna A. M. du Mortier
Anton J. L. M. van Balkom
Anton J. L. M. van Balkom
Jos W. R. Twisk
Patricia van Oppen
Patricia van Oppen
Henny A. D. Visser
Henny A. D. Visser
author_facet Johanna A. M. du Mortier
Anton J. L. M. van Balkom
Anton J. L. M. van Balkom
Jos W. R. Twisk
Patricia van Oppen
Patricia van Oppen
Henny A. D. Visser
Henny A. D. Visser
author_sort Johanna A. M. du Mortier
collection DOAJ
description ObjectiveIn psychiatric disorders, lifestyle factors are known to influence both the development and course of the illness. However, little is known about the longitudinal relationship between lifestyle factors and OCD symptom severity, including the potential bidirectional, prospective association between them. This study examines both the contemporaneous and two-year prospective relationships between lifestyle factors and OCD symptom severity, as well as the reverse relationship—namely, the influence of OCD severity on lifestyle factors.MethodsLongitudinal data spanning six consecutive years were obtained from the Netherlands Obsessive Compulsive Disorder Association study (NOCDA). We examined the lifestyle factors: smoking, alcohol and illicit drug use, physical activity, and body mass index (BMI). Mixed models and Generalized Estimating Equations were employed to analyze the contemporaneous and bidirectional prospective relationships between these lifestyle factors and OCD severity.ResultsDrug and alcohol use, BMI, and physical activity did not exhibit a significant contemporaneous relationship with OCD severity. Smoking was significantly associated with more severe OCD symptoms: however depression influenced this relationship. Using alcohol was significantly associated with lower OCD severity. Among females, alcohol use was significantly associated with lower OCD severity two years later. Moderate and high levels of physical activity were significantly associated with lower OCD symptom severity two years later, whereas other lifestyle factors did not significantly predict future OCD symptom severity. OCD symptom severity did not predict any lifestyle factor, except among females, where higher OCD severity was associated with lower drug use two years later.ConclusionPrevious studies on other psychiatric disorders have found that unhealthy lifestyle factors are associated with more severe psychiatric symptoms. It appears that OCD might differ in these aspects. In the present study, drug and alcohol use, higher BMI, and a composite score of unhealthy lifestyle factors were not associated with more severe OCD symptoms and did not predict greater symptom severity two years later. However, consistent with findings in other psychiatric disorders, higher levels of physical activity were significantly associated with lower OCD symptom severity two years later. Further research is needed to determine whether increasing physical activity could result in less severe OCD symptoms.
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spelling doaj-art-a895354950954d6781eba8af4e9cecb42025-08-20T02:40:35ZengFrontiers Media S.A.Frontiers in Psychiatry1664-06402025-07-011610.3389/fpsyt.2025.15526911552691The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysisJohanna A. M. du Mortier0Anton J. L. M. van Balkom1Anton J. L. M. van Balkom2Jos W. R. Twisk3Patricia van Oppen4Patricia van Oppen5Henny A. D. Visser6Henny A. D. Visser7Department of Research, Mental Health Care Institute, GGz Centraal, Amersfoort, NetherlandsDepartment of Psychiatry, Amsterdam University Medical Center (UMC), location Vrije Universiteit Amsterdam, Amsterdam, NetherlandsMental Health Program, Amsterdam Public Health, Amsterdam, NetherlandsDepartment of Epidemiology and Biostatistics, Amsterdam University Medical Center (UMC), location Vrije Universiteit Amsterdam, Amsterdam, NetherlandsDepartment of Psychiatry, Amsterdam University Medical Center (UMC), location Vrije Universiteit Amsterdam, Amsterdam, NetherlandsMental Health Program, Amsterdam Public Health, Amsterdam, NetherlandsDepartment of Research, Mental Health Care Institute, GGz Centraal, Amersfoort, NetherlandsDepartment of Psychiatry, Amsterdam University Medical Center, University of Amsterdam, Amsterdam, NetherlandsObjectiveIn psychiatric disorders, lifestyle factors are known to influence both the development and course of the illness. However, little is known about the longitudinal relationship between lifestyle factors and OCD symptom severity, including the potential bidirectional, prospective association between them. This study examines both the contemporaneous and two-year prospective relationships between lifestyle factors and OCD symptom severity, as well as the reverse relationship—namely, the influence of OCD severity on lifestyle factors.MethodsLongitudinal data spanning six consecutive years were obtained from the Netherlands Obsessive Compulsive Disorder Association study (NOCDA). We examined the lifestyle factors: smoking, alcohol and illicit drug use, physical activity, and body mass index (BMI). Mixed models and Generalized Estimating Equations were employed to analyze the contemporaneous and bidirectional prospective relationships between these lifestyle factors and OCD severity.ResultsDrug and alcohol use, BMI, and physical activity did not exhibit a significant contemporaneous relationship with OCD severity. Smoking was significantly associated with more severe OCD symptoms: however depression influenced this relationship. Using alcohol was significantly associated with lower OCD severity. Among females, alcohol use was significantly associated with lower OCD severity two years later. Moderate and high levels of physical activity were significantly associated with lower OCD symptom severity two years later, whereas other lifestyle factors did not significantly predict future OCD symptom severity. OCD symptom severity did not predict any lifestyle factor, except among females, where higher OCD severity was associated with lower drug use two years later.ConclusionPrevious studies on other psychiatric disorders have found that unhealthy lifestyle factors are associated with more severe psychiatric symptoms. It appears that OCD might differ in these aspects. In the present study, drug and alcohol use, higher BMI, and a composite score of unhealthy lifestyle factors were not associated with more severe OCD symptoms and did not predict greater symptom severity two years later. However, consistent with findings in other psychiatric disorders, higher levels of physical activity were significantly associated with lower OCD symptom severity two years later. Further research is needed to determine whether increasing physical activity could result in less severe OCD symptoms.https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1552691/fullobsessive-compulsive disorderOCDphysical activitylife styleBMIillicit drug
spellingShingle Johanna A. M. du Mortier
Anton J. L. M. van Balkom
Anton J. L. M. van Balkom
Jos W. R. Twisk
Patricia van Oppen
Patricia van Oppen
Henny A. D. Visser
Henny A. D. Visser
The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis
Frontiers in Psychiatry
obsessive-compulsive disorder
OCD
physical activity
life style
BMI
illicit drug
title The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis
title_full The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis
title_fullStr The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis
title_full_unstemmed The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis
title_short The bidirectional relationship between severity of obsessive-compulsive symptoms and lifestyle factors in patients with obsessive-compulsive disorder: a contemporaneous and prospective analysis
title_sort bidirectional relationship between severity of obsessive compulsive symptoms and lifestyle factors in patients with obsessive compulsive disorder a contemporaneous and prospective analysis
topic obsessive-compulsive disorder
OCD
physical activity
life style
BMI
illicit drug
url https://www.frontiersin.org/articles/10.3389/fpsyt.2025.1552691/full
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