In 2026, I remain affiliated with the ADHD research group led by Professor Jan Haavik at the Department of Biomedicine, where I am working on finalizing revisions of a submitted manuscript, co-supervising Research Track (Forskerlinjen) students, and contributing to the ADHD in Adults in Norway project, which is planning a fourth data collection wave.

I work clinically at 80% as a consultant psychiatrist at Betanien BUP, Betanien Hospital, Fyllingsdalen.

In 2025, I held a 20% affiliated position with the ADHD research group led by Professor Jan Haavik at the Department of Biomedicine. During this period, I worked on a project initiated under the EU-funded E2BN project: Breastfeeding and its effect on ADHD symptoms in children, using MoBa data including genetic information. The manuscript has been submitted and is currently under revision.

During 2023–2024, I was employed at the Department of Biomedicine in a 40% position as a guest researcher, funded by NEVSOM, for my project “ADHD gender and genes – Comparison of genetic risk and self-reported ADHD symptoms in women and men in a population-based study”, using data from MoBa (the Norwegian Mother, Father and Child Cohort Study). An article from this work was published in JCPP Advances in March 2025.

In 2023–2024, I also worked in a 60% position as a consultant psychiatrist at Betanien BUP and can be contacted by email at berit.skretting.solberg@betaniensykehus.no.

I defended my PhD on 7 February 2020 at the University of Bergen. The title of my dissertation was:

“Attention-deficit/hyperactivity disorder; sex differences in psychiatric comorbidity and transgenerational recurrence risks. A population-based study using Norwegian registry data.”

Link to the press release:
https://www.uib.no/nye-doktorgrader/133258/kj%C3%B8nnsforskjeller-ved-adhd

Main research interests:

• Sex differences, particularly in neurodevelopmental disorders
• ADHD
• Autism
• Psychiatric comorbidity: anxiety, depression, schizophrenia spectrum disorders, personality disorders, substance use disorders, bipolar disorder
• Epidemiology
• Heritability of ADHD from parents to children
• Genetics
• Nutrition and risk of neurodevelopmental disorders
• Registry-based studies
• Intergenerational studies

 (see publication list for more information).

2021

• Maj-Britt Rocio Posserud; Berit Skretting Solberg; Anders Engeland et al. (2021). Male to female ratios in autism spectrum disorders by age, intellectual disability and attention-deficit/hyperactivity disorder. (external link)
• Lin Li; Mark J Taylor; Katarina Bälter et al. (2021). Gene-Environment Interactions in Attention-Deficit/Hyperactivity Disorder Symptom Dimensions: The Role of Unhealthy Food Habits. (external link)

2018

• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2018). Psychiatric comorbidities in adults with ADHD and/or autism: Can patterns of comorbidities together with genetics add knowledge on etiologic relations?. (external link)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism. (external link)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2018). Psychiatric comorbidity and genetic correlations provide new insights into differences between ADHD and autism. (external link)

2017

• Berit Skretting Solberg; Maj-Britt Rocio Posserud (2017). Fra uforskammet og vanartet til bokstavbarn - ADHD og autisme i dagens skole. (external link)
• Berit Skretting Solberg; Anne Halmøy; Anders Engeland et al. (2017). Gender differences in psychiatric comorbidity: a population-based study of 40 000 adults with attention deficit hyperactivity disorder. (external link)
• Berit Skretting Solberg; Anne Halmøy; Anders Engeland et al. (2017). Psychiatric comorbidities in male and female adults with ADHD. (external link)
• Berit Skretting Solberg; Anne Halmøy; Anders Engeland et al. (2017). Gender Differences in Psychiatric Comorbidity: A Population-based Study of 40,000 Adults with Attention-Deficit/Hyperactivity Disorder. (external link)

2022

• Liv Grimstvedt Kvalvik; Kari Klungsøyr; Jannicke Igland et al. (2022). Association of sweetened carbonated beverage consumption during pregnancy and ADHD symptoms in the offspring: a study from the Norwegian Mother, Father and Child Cohort Study (MoBa). (external link)

2023

• Catharina A. Hartman; Henrik Larsson; Melissa Vos et al. (2023). Anxiety, mood, and substance use disorders in adult men and women with and without attention-deficit/hyperactivity disorder: A substantive and methodological overview. (external link)
• Berit Skretting Solberg; Liv Grimstvedt Kvalvik; Johanne Telnes Instanes et al. (2023). Maternal Fiber Intake During Pregnancy and Development of Attention-Deficit/Hyperactivity Disorder Symptoms Across Childhood: The Norwegian Mother, Father, and Child Cohort Study. (external link)
• André Høberg; Berit Skretting Solberg; Jan Haavik et al. (2023). Genetically Informed Early Identification of Attention Deficit Hyperactivity Disorder Symptoms in the Norwegian Mother, Father and Child Cohort Study (MoBa). (external link)
• Tian Xie; Lizanne J.S. Schweren; Henrik Larsson et al. (2023). Do Poor Diet and Lifestyle Behaviors Modify the Genetic Susceptibility to Impulsivity in the General Population?. (external link)

2020

• Berit Skretting Solberg; Kari Klungsøyr; Jan Haavik et al. (2020). Attention-deficit/hyperactivity disorder; sex differences in psychiatric comorbidity and transgenerational recurrence risks : A population-based study using Norwegian registry data. (external link)
• Berit Skretting Solberg; Tor-Arne Hegvik; Anne Halmøy et al. (2020). Sex differences in parent–offspring recurrence of attention-deficit/hyperactivity disorder. (external link)

2019

• Berit Skretting Solberg; Tor-Arne Hegvik; Tetyana Zayats et al. (2019). Parent-offspring recurrence of ADHD. (external link)
• Berit Skretting Solberg; Tetyana Zayats; Maj-Britt Rocio Posserud et al. (2019). Patterns of psychiatric comorbidity and genetic correlations provide new insights into differences between attention-deficit/hyperactivity disorder and autism spectrum disorder. (external link)
• Berit Skretting Solberg; Tor-Arne Hegvik; Anne Halmøy et al. (2019). Parent-offspring recurrence of attention-deficit/hyperactivity disorder. (external link)
• Berit Skretting Solberg; Anne Halmøy; Jan Haavik (2019). Helsetjeneste for voksne med ADHD – brukertilfredshet og betydning av psykoedukasjon. (external link)

2024

• André Høberg; Berit Skretting Solberg; Tor-Arne Hegvik et al. (2024). Using polygenic scores in combination with symptom rating scales to identify attention-deficit/hyperactivity disorder. (external link)
• Johanne Telnes Instanes; Berit Skretting Solberg; Liv Grimstvedt Kvalvik et al. (2024). Organic food consumption during pregnancy and symptoms of neurodevelopmental disorders at 8 years of age in the offspring: the Norwegian Mother, Father and Child Cohort Study (MoBa). (external link)

2014

• Berit Skretting Solberg; Mari Hysing; Tormod Bøe et al. (2014). Holdninger til bruk av medisiner hos voksne med ADHD målt ved hjelp av Beliefs about Medicines Questionnaire (BMQ). (external link)

2025

• Camilla Djønne Moldekleiv; Astri J. Lundervold; Berit Skretting Solberg et al. (2025). Prevalence of substance use disorder in individuals with attention deficit/hyperactivity disorder: associations with sex and psychiatric comorbidity. (external link)
• Berit Skretting Solberg; Maj-Britt Rocio Posserud; André Høberg et al. (2025). Sex differences in self-reported attention-deficit/hyperactivity disorder symptoms in clinical and population-based cohorts. (external link)

2015

• Berit Skretting Solberg; Jan Haavik; Anne Halmøy (2015). Health Care Services for Adults With ADHD: Patient Satisfaction and the Role of Psycho-Education.. (external link)

See a complete overview of publications in NVA.

Project as a guestresearcher, 40% position March 2023-February 2024: at Department of Biomedicine at UiB funded by NEVSOM for my project  "ADHD gender and genes - Sammenligning av genetisk risiko og selvrapporterte ADHD-symptomer hos kvinner og menn i en befolkningsstudie”"

Project as a researcher, 50% position March 2020- February 2022: E2BN - Eat to be nice - https://eat2benice.eu/

From the E2BN web-page:

"Maladaptive impulsivity and compulsivity predispose to antisocial and addictive behaviours. Factors influencing those traits are not well understood, but diet, lifestyle, socio-economic status (SES), sex, and heritability play pivotal roles. Here, we aim:

1. to identify nutrition and lifestyle drivers that can be employed to prevent detrimental impulsivity/ compulsivity in males and females across the lifespan,
2. to characterize the etiologic paths leading to extreme behaviour, and
3. to promote policy changes to counteract maladaptive impulsivity/compulsivity by disseminating evidence-based information about health-related behaviours to families, clinicians, policy makers, and general public."

PhD-project (2016-2020):

Psychiatric comorbidities in ADHD;

by linking information from four nationwide, population-based registries: The Medical Birth Registry of Norway, established in 1967, the Norwegian Prescription Database, established in 2004, the Norwegian Patient Registry, with data from 2008, and the National Educational Database (NUDB) from Statistics Norway.

First paper studied gender differences in adults with ADHD in risk of psychiatric disorders compared with the remaining population without ADHD, published in Acta Psychiatrica Scandinavica 2017 (see publication list for details)

Second paper aimed to investigate different patterns in psychiatric comorbidities in adults with ADHD, ASD or both ADHD and ASD, and evaluate these patterns with genetic correlations from summary statistics, published in Biological Psychiatry 2019 (see publication list for details)

Third paper aimed to investigate the parent-offspring recurrence risk of ADHD by parental and offspring sex, published in J Child Psychol Psychiatry 2021 Vol. 62 Issue 8 Pages 1010-1018.