Ludvig Daae Bjørndal
@ludvigdb.bsky.social
Clinical psychologist, PhD. Interested in mental health, environmental adversity, and their causes.
http://www.ludvigbjorndal.com
PROMENTA Research Center, University of Oslo
PsychGen, Lovisenberg Diaconal Hospital / Norwegian Institute of Public Health
http://www.ludvigbjorndal.com
PROMENTA Research Center, University of Oslo
PsychGen, Lovisenberg Diaconal Hospital / Norwegian Institute of Public Health
Artikkelen er åpent tilgjengelig her: jamanetwork.com/journals/jam...
Avoidant/Restrictive Food Intake Phenotypes
This cohort study investigates the prevalence of avoidant/restrictive food intake (ARFI) in the general pediatric population, developmental characteristics of affected children, and the genetic underp...
jamanetwork.com
December 11, 2025 at 9:43 AM
Artikkelen er åpent tilgjengelig her: jamanetwork.com/journals/jam...
www.aftenposten.no/foreldreliv/...
Jeg ble nylig intervjuet av Aftenposten om vår nye artikkel om symptomer på unngående restriktiv spiseforstyrrelse (ARFID)
Jeg ble nylig intervjuet av Aftenposten om vår nye artikkel om symptomer på unngående restriktiv spiseforstyrrelse (ARFID)
Ny studie: Nesten hvert fjerde barn viser symptomer på spiseforstyrrelser
– For et mindretall er dette ikke vanlig kresenhet, men en spiseforstyrrelse som kan ha negative konsekvenser for både fysisk og psykisk utvikling, sier forsker Ludvig Daae Bjørndal.
www.aftenposten.no
December 11, 2025 at 9:43 AM
www.aftenposten.no/foreldreliv/...
Jeg ble nylig intervjuet av Aftenposten om vår nye artikkel om symptomer på unngående restriktiv spiseforstyrrelse (ARFID)
Jeg ble nylig intervjuet av Aftenposten om vår nye artikkel om symptomer på unngående restriktiv spiseforstyrrelse (ARFID)
Reposted by Ludvig Daae Bjørndal
Who wants to join us in Oslo to study how health influences educational underperformance? We are hiring PhDs postdocs candidates for our funded project. We will follow children from birth to emerging adulthood, using behavioural genetic methods and large datasets 945000.webcruiter.no/Main/Recruit...
Two positions as either PhD or postdoctoral fellow on health determinants of education
Do you want to research how health influences school performance and leads to intergenerational inequality? We have two vacant 3-year positions as a PhD fellow or postdoctoral research fellow in the p...
945000.webcruiter.no
December 5, 2025 at 8:58 AM
Who wants to join us in Oslo to study how health influences educational underperformance? We are hiring PhDs postdocs candidates for our funded project. We will follow children from birth to emerging adulthood, using behavioural genetic methods and large datasets 945000.webcruiter.no/Main/Recruit...
And the paper (open access): jamanetwork.com/journals/jam...
Avoidant/Restrictive Food Intake Phenotypes
This cohort study investigates the prevalence of avoidant/restrictive food intake (ARFI) in the general pediatric population, developmental characteristics of affected children, and the genetic underp...
jamanetwork.com
December 3, 2025 at 9:13 AM
And the paper (open access): jamanetwork.com/journals/jam...
Nice summary of our new paper on avoidant restrictive eating in Newsweek
www.newsweek.com/new-risks-pi...
www.newsweek.com/new-risks-pi...
New risks of picky eating in kids revealed
The study of over 35,000 children found that restricted eating has serious nutritional consequences for about 2–3 percent of kids.
www.newsweek.com
December 3, 2025 at 9:13 AM
Nice summary of our new paper on avoidant restrictive eating in Newsweek
www.newsweek.com/new-risks-pi...
www.newsweek.com/new-risks-pi...
I am really grateful to a fabulous team who has contributed to this work for more than 2 years, with expertise across eating disorders, epidemiology, developmental psychology, and genetics. Thank you! 💫
December 1, 2025 at 2:36 PM
I am really grateful to a fabulous team who has contributed to this work for more than 2 years, with expertise across eating disorders, epidemiology, developmental psychology, and genetics. Thank you! 💫
In sum, we identify high prevalence of ARFI in the general pediatric population, with elevated risk of more developmental difficulties for affected children. This is indicative of the need for broad support interventions. Finally, our findings advance understanding of genetic underpinnings of ARFI.
December 1, 2025 at 2:36 PM
In sum, we identify high prevalence of ARFI in the general pediatric population, with elevated risk of more developmental difficulties for affected children. This is indicative of the need for broad support interventions. Finally, our findings advance understanding of genetic underpinnings of ARFI.
We subsequently conducted multiple genetic analyses. SNP-h2 ranged from 8-16%. Two genome-wide loci were identified and, for ARFI-clinical, an association with ADCY3. Small to moderate genetic correlations were observed across ARFI and numerous complex trait phenotypes.
December 1, 2025 at 2:36 PM
We subsequently conducted multiple genetic analyses. SNP-h2 ranged from 8-16%. Two genome-wide loci were identified and, for ARFI-clinical, an association with ADCY3. Small to moderate genetic correlations were observed across ARFI and numerous complex trait phenotypes.
We assessed numerous characteristics from socio-emotional and behavioral domains from 6 months years to 14 years. Across these timepoints, children with ARFI-broad persistent exhibited more developmental difficulties compared with children with no avoidant/restrictive food intake phenotypes.
December 1, 2025 at 2:36 PM
We assessed numerous characteristics from socio-emotional and behavioral domains from 6 months years to 14 years. Across these timepoints, children with ARFI-broad persistent exhibited more developmental difficulties compared with children with no avoidant/restrictive food intake phenotypes.
Of children with data at 3 and 8 years (35,751), 32% were classified with any broad ARFI: 6% persistent, 18% transient, and 8% emergent. Prevalence of ARFI and at least one clinical indicator was 2% for persistent, 3% for transient, and 1% for emergent (6% in total).
December 1, 2025 at 2:36 PM
Of children with data at 3 and 8 years (35,751), 32% were classified with any broad ARFI: 6% persistent, 18% transient, and 8% emergent. Prevalence of ARFI and at least one clinical indicator was 2% for persistent, 3% for transient, and 1% for emergent (6% in total).
We constructed avoidant/restrictive food intake (ARFI) phenotypes based on 3 and 8 year data, including transient (only 3), emergent (only 8), and persistent (both 3 and 8). Furthermore, we integrated symptom and registry data to identify multiple indicators of clinical significance.
December 1, 2025 at 2:36 PM
We constructed avoidant/restrictive food intake (ARFI) phenotypes based on 3 and 8 year data, including transient (only 3), emergent (only 8), and persistent (both 3 and 8). Furthermore, we integrated symptom and registry data to identify multiple indicators of clinical significance.
Excited to share our new paper on avoidant/restrictive food intake, a core symptom of ARFID, just out in @jamapediatrics.com
We highlight its prevalence, associated developmental characteristics from 6 months through 14 years, and genetic associations.
doi.org/10.1001/jama...
We highlight its prevalence, associated developmental characteristics from 6 months through 14 years, and genetic associations.
doi.org/10.1001/jama...
December 1, 2025 at 2:36 PM
Excited to share our new paper on avoidant/restrictive food intake, a core symptom of ARFID, just out in @jamapediatrics.com
We highlight its prevalence, associated developmental characteristics from 6 months through 14 years, and genetic associations.
doi.org/10.1001/jama...
We highlight its prevalence, associated developmental characteristics from 6 months through 14 years, and genetic associations.
doi.org/10.1001/jama...
Reposted by Ludvig Daae Bjørndal
A large population-based study in Norway found substantial prevalence of avoidant/restrictive food intake patterns, with affected children at higher risk for developmental challenges and neurodevelopmental diagnoses. ja.ma/4p8ZQ8s
November 25, 2025 at 7:45 PM
A large population-based study in Norway found substantial prevalence of avoidant/restrictive food intake patterns, with affected children at higher risk for developmental challenges and neurodevelopmental diagnoses. ja.ma/4p8ZQ8s
I have just launched my Substack, 'Minds in Context', where I explore risk and resilience in current mental health research. More to come!
open.substack.com/pub/ludvigdb...
open.substack.com/pub/ludvigdb...
Who am I? And what is this?
Welcome to Minds in Context
open.substack.com
November 19, 2025 at 1:40 AM
I have just launched my Substack, 'Minds in Context', where I explore risk and resilience in current mental health research. More to come!
open.substack.com/pub/ludvigdb...
open.substack.com/pub/ludvigdb...
Reposted by Ludvig Daae Bjørndal
Results from study of mental health in 92 countries (n>53,000): People are not doing well.
- U-shape for age is gone: Young adults lowest health, highest illness
- Education still matters (a lot)
- 45% of older people live alone
- Hybrid work > 100% remote or in-person
Preprint: osf.io/3jyda_v1
- U-shape for age is gone: Young adults lowest health, highest illness
- Education still matters (a lot)
- 45% of older people live alone
- Hybrid work > 100% remote or in-person
Preprint: osf.io/3jyda_v1
November 12, 2025 at 12:47 PM
Results from study of mental health in 92 countries (n>53,000): People are not doing well.
- U-shape for age is gone: Young adults lowest health, highest illness
- Education still matters (a lot)
- 45% of older people live alone
- Hybrid work > 100% remote or in-person
Preprint: osf.io/3jyda_v1
- U-shape for age is gone: Young adults lowest health, highest illness
- Education still matters (a lot)
- 45% of older people live alone
- Hybrid work > 100% remote or in-person
Preprint: osf.io/3jyda_v1
We have a new preprint out examining symptom-specific polygenic associations with maternal mental health during pregnancy and postpartum in up to 59,000 MoBa mothers 🧬🌧️☀️
osf.io/preprints/ps...
osf.io/preprints/ps...
October 25, 2025 at 7:24 AM
Excited to share this work led by @cktamnes.bsky.social (and featuring many colleagues from PROMENTA at @unioslo-svfak.bsky.social) exploring the links between psychological wellbeing and illbeing across biological, developmental, societal and intervention perspectives
The nature of the relation between mental well-being and ill-being
www.nature.com/articles/s41...
www.nature.com/articles/s41...
The nature of the relation between mental well-being and ill-being - Nature Human Behaviour
Tamnes et al. explore the complex relationship between ill-being—including mental and behavioural disorders—and mental well-being.
www.nature.com
October 16, 2025 at 3:55 PM
Excited to share this work led by @cktamnes.bsky.social (and featuring many colleagues from PROMENTA at @unioslo-svfak.bsky.social) exploring the links between psychological wellbeing and illbeing across biological, developmental, societal and intervention perspectives
Reposted by Ludvig Daae Bjørndal
I'm hiring! ✨ Looking for a Research Fellow to study environmental factors that mitigate intergenerational transmission of mental health.
3-year post at UCL @uclbrainscience.bsky.social with great opportunities for training, collaboration & exciting science!
🔗 Apply: www.jobs.ac.uk/job/DOZ633/r...
3-year post at UCL @uclbrainscience.bsky.social with great opportunities for training, collaboration & exciting science!
🔗 Apply: www.jobs.ac.uk/job/DOZ633/r...
Research Fellow in Mental Health at UCL
Apply for the Research Fellow in Mental Health role on jobs.ac.uk, the top job board for academic positions in higher education. View details and apply now.
www.jobs.ac.uk
October 10, 2025 at 9:41 AM
I'm hiring! ✨ Looking for a Research Fellow to study environmental factors that mitigate intergenerational transmission of mental health.
3-year post at UCL @uclbrainscience.bsky.social with great opportunities for training, collaboration & exciting science!
🔗 Apply: www.jobs.ac.uk/job/DOZ633/r...
3-year post at UCL @uclbrainscience.bsky.social with great opportunities for training, collaboration & exciting science!
🔗 Apply: www.jobs.ac.uk/job/DOZ633/r...
Reposted by Ludvig Daae Bjørndal
I had the pleasure of publishing an introduction to instrumental variables co-authored with Henrik Daae Zachrisson for the #JClinEpi key concepts in clinical epidemiology series! 🔬📖
www.jclinepi.com/article/S089...
www.jclinepi.com/article/S089...
September 4, 2025 at 8:45 AM
I had the pleasure of publishing an introduction to instrumental variables co-authored with Henrik Daae Zachrisson for the #JClinEpi key concepts in clinical epidemiology series! 🔬📖
www.jclinepi.com/article/S089...
www.jclinepi.com/article/S089...
Now published in JCPP Advances! 📜
acamh.onlinelibrary.wiley.com/doi/10.1002/...
With @omidvebrahimi.bsky.social and Sarah Bauermeister
acamh.onlinelibrary.wiley.com/doi/10.1002/...
With @omidvebrahimi.bsky.social and Sarah Bauermeister
August 21, 2025 at 6:48 AM
Now published in JCPP Advances! 📜
acamh.onlinelibrary.wiley.com/doi/10.1002/...
With @omidvebrahimi.bsky.social and Sarah Bauermeister
acamh.onlinelibrary.wiley.com/doi/10.1002/...
With @omidvebrahimi.bsky.social and Sarah Bauermeister
6/6. Thanks to a great team :) @espenr.bsky.social @ragnhildbangnes.bsky.social Tilmann von Soest and @omidvebrahimi.bsky.social
August 17, 2025 at 2:34 PM
6/6. Thanks to a great team :) @espenr.bsky.social @ragnhildbangnes.bsky.social Tilmann von Soest and @omidvebrahimi.bsky.social
5/6. This paper follows several articles in which we show how risk factors exhibit granular associations with mental disorder symptoms. Such relationships can be overlooked when global measures, such as (symptom) sum scores, are used.
See also:
doi.org/10.1016/j.ja...
doi.org/10.1037/amp0...
See also:
doi.org/10.1016/j.ja...
doi.org/10.1037/amp0...
August 17, 2025 at 2:34 PM
5/6. This paper follows several articles in which we show how risk factors exhibit granular associations with mental disorder symptoms. Such relationships can be overlooked when global measures, such as (symptom) sum scores, are used.
See also:
doi.org/10.1016/j.ja...
doi.org/10.1037/amp0...
See also:
doi.org/10.1016/j.ja...
doi.org/10.1037/amp0...
4/6. We describe three key findings:
1️⃣ Several symptom-specific associations were discernible.
2️⃣ Depressive symptoms were more strongly tied to financial adversity compared with anxiety.
3️⃣ Hopelessness about the future was most strongly connected to financial adversity.
1️⃣ Several symptom-specific associations were discernible.
2️⃣ Depressive symptoms were more strongly tied to financial adversity compared with anxiety.
3️⃣ Hopelessness about the future was most strongly connected to financial adversity.
August 17, 2025 at 2:34 PM
4/6. We describe three key findings:
1️⃣ Several symptom-specific associations were discernible.
2️⃣ Depressive symptoms were more strongly tied to financial adversity compared with anxiety.
3️⃣ Hopelessness about the future was most strongly connected to financial adversity.
1️⃣ Several symptom-specific associations were discernible.
2️⃣ Depressive symptoms were more strongly tied to financial adversity compared with anxiety.
3️⃣ Hopelessness about the future was most strongly connected to financial adversity.
3/6. We incorporate multiple subjectively assessed financial factors (e.g., ability to cope with unforeseen expenses) and register-based financial data (e.g., income, assets).
August 17, 2025 at 2:34 PM
3/6. We incorporate multiple subjectively assessed financial factors (e.g., ability to cope with unforeseen expenses) and register-based financial data (e.g., income, assets).
2/6. We apply a systems-based approach to identify symptom-specific relationships. Why? Financial adversity is complex and multidimensional and may exhibit granular associations with specific mental disorder symptoms (i.e., different mental health experiences).
August 17, 2025 at 2:34 PM
2/6. We apply a systems-based approach to identify symptom-specific relationships. Why? Financial adversity is complex and multidimensional and may exhibit granular associations with specific mental disorder symptoms (i.e., different mental health experiences).