iiinova — where your digital self keeps evolving

Helsinki Institute for Demography and Population Health @pophel.bsky.social · 30/09/2026

Zoom event 📹 On 5th of October, 12:15-01:00 PM (UTC+2), Julia Hellstrand will be presenting at PopHel Talks with title: Childbearing in flux - Who is still having children? 👶 Please register here: elomake.helsinki.fi/lomakkeet/14... 1/3

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 30/09/2026

📢 PopHel Newsletter for April 2026 - September 2026 is out! 🔥To receive our newsletter you can subscribe to our mailing list by sending an email to johanna.b.leponen@helsinki.fi You will also receive information on upcoming public talks 👩‍🏫 www.helsinki.fi/en/helsinki-...

helsinki.fi

PopHel Newsletter: April 2026 - September 2026 | Helsinki Institute for Demography and Population Health | University of Helsinki

This newsletter shares our research activities at the Helsinki Institute for Demography and Population Health (PopHel) from spring to autumn 2026.

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 22/09/2026

Ricarda Duerst, M.Sc. will defend the doctoral dissertation entitled "Learning from past mistakes - Uncertainty in demographic forecasting" in the Faculty of Social Sciences, University of Helsinki, on 25 September 2026 at 13:00.👏🧑‍🎓

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University of Helsinki @helsinki.fi · 21/09/2026

Lapsen vanhemmiltaan perimät geenit yhdessä kasvuympäristön kanssa ohjaavat monella tapaa ihmisen elämänkulkua. Miten perimä, ympäristötekijät ja elintavat vaikuttavat esimerkiksi terveyteen ja yksilön käyttäytymiseen? Seuraa keskustelua Tiedekulmassa tai verkossa huomenna tiistaina 22.9. klo 17.

helsinki.fi

Geenit, ympäristö vai yksilön valinnat? | Tiedekulma | Helsingin yliopisto

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FemQuant @femquant.bsky.social · 11/09/2026

It's September and we're kicking off another term of monthly #FemQuantSeminars! Join us online on 29 Sept for a presentation by @signesvallfors.bsky.social on Exposure to Local Violent Crime and Abortion, Miscarriage, and Stillbirth in Mexico. Info & sign-up: femquant.wordpress.com/seminar-seri...

Foto of speaker and seminar details on blue background. Exposure to local violent crime and abortion, miscarriage and stillbirth in Mexico. Dr. Signe Svallfors, Stockholm University. Tuesday 29 September 2026, 8:00 ET/ 13:00 BST/ 14:00 CEST. Link to more information in post

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FLUX @flux-consortium.bsky.social · 11/09/2026

Väestöennusteet ovat perusta yhteiskunnalliselle päätöksenteolle. Ne tukevat oikea-aikaista ja tarkoituksenmukaista päätöksentekoa. Mutta miksi ennustaminen on vaikeaa? Miten väestöennusteita voidaan tulkita? Tervetuloa webinaariin 22.9.26 klo 14-15. Ilmoittaudu: fluxconsortium.fi/fi/news/demo...

fluxconsortium.fi

DEMOGRAPHY Talks 22.09.2026: Mitä hyötyä on väestöennusteista? - Flux Consortium

Aika: 22.09.2026 14.00 – 15.00 Tapahtumatyyppi: Teams-webinaari Ilmoittaudu webinaariin Webropolissa Väestöennusteet ovat perusta yhteiskunnalliselle päätöksenteolle. Ne tarjoavat tietoa tulevista keh...

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Suomen Väestötieteen Yhdistys ry @svyry.bsky.social · 04/09/2026

SVY:n 50. jatko- ja täydennyskoulutusseminaari 29.–30.10.2026 Tvärminnessä! Luvassa puheenvuoroja mm. kaupungistumisesta, väestöennusteista ja nuorten tulevaisuususkosta. Ilmoittautuminen alkaa 11.9. Lisätietoja: blogs.helsinki.fi/svy-ry/vaest... Tervetuloa!

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University of Helsinki @helsinki.fi · 26/08/2026

Muistisairautta sairastavien kokonaismäärä kasvaa merkittävästi tulevina vuosina, ja kotona asuvien määrä voi jopa yli kaksinkertaistua vuoden 2018 tasosta. #[www.helsinki.fi/fi/uutiset/y...

helsinki.fi

Kotona asuvien muistisairaiden määrä voi kaksinkertaistua vuoteen 2040 mennessä | Helsingin yliopisto

Muistisairautta sairastavien kokonaismäärä kasvaa merkittävästi tulevina vuosina, ja kotona asuvien määrä voi jopa yli kaksinkertaistua vuoden 2018 tasosta, ilmenee Helsingin yliopiston tutkimuksesta.

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FLUX @flux-consortium.bsky.social · 03/08/2026

ADHD ei ole yhteydessä vain siihen, saavatko ihmiset lapsia, vaan myös siihen, milloin vanhemmaksi tullaan. Tuore tutkimus on toteutettu Helsingin yliopistossa @helsinki.fi osana Flux-konsortion tutkimusta @kailaheimosanna.bsky.social et al. fluxconsortium.fi/fi/news/adhd...

fluxconsortium.fi

ADHD-diagnoosin saaneet tulevat vanhemmiksi keskimäärin muita nuorempina – mutta ovat myös useammin lapsettomia - Flux Consortium

ADHD-diagnoosin saaneet saavat ensimmäisen lapsensa muita todennäköisemmin nuorena aikuisena, mutta myöhemmin aikuisuudessa ensimmäisen lapsen saaminen on heillä muita epätodennäköisempää. ADHD-diagno...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 03/06/2026

🎉 We're attending #EPC2026 in Bologna this week! The PopHel team has a packed programme across three days. Come say hi or catch our talks 👇 #demography #populationhealth #EPC2026 1/5

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 04/05/2026

👩‍🎓 Maria Ponkilainen successfully defended her PhD thesis "Childbearing and Divorce among Same-Sex and Different-Sex Couples in the Nordic Context : A Register-Based Analysis" at the University of Helsinki in March 2026. Her thesis can be read here: hdl.handle.net/10138/627822 🥳🌈

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 27/04/2026

🧑‍🎓 @xuzong.bsky.social successfully defended his PhD thesis at the University of Helsinki in March 2026. His thesis "Early-life determinants of socioeconomic health inequalities in Europe, Israel, and China : A machine learning approach" can be read here: hdl.handle.net/10138/628682 🥳

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Juha Luukkonen @sammalmaetaes.bsky.social · 13/04/2026

Los Pollos Hermanos! 🐓 Our new cohort study published in JECH: Parental death is linked to increased psychotropic medication use in adults (ages 35–55), especially among those with fewer siblings, highlighting the role of family as a support network. jech.bmj.com/content/earl...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 10/04/2026

PopHel Talks: Next Monday, 13th of April, @joandamiens.bsky.social presents with title: Housing pathways and mental health across the life course - evidence from Finnish registers 13th of April, 02:00-02:45 PM (UTC+2) Please register for a Zoom link: elomake.helsinki.fi/lomakkeet/13...

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JAMA Psychiatry @jamapsychiatry.com · 08/04/2026

Earlier #ADHD diagnosis was associated with higher school performance, more academic educational track selection, and reduced risk of school dropout, while later diagnosis indicated greater dropout risk. ja.ma/4sTLI5f

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 09/04/2026

📢 PopHel Newsletter for October 2025 - March 2026 is out! 📰 To receive our newsletter you can subscribe to our mailing list by sending an email to mila.lyytinen@helsinki.fi 📩 You will also receive information on upcoming public talks 👩‍🏫 and open positions at PopHel. www.helsinki.fi/en/helsinki-...

helsinki.fi

PopHel Newsletter: October 2025 - March 2026 | Helsinki Institute for Demography and Population Health | University of Helsinki

This newsletter shares our research activities at the Helsinki Institute for Demography and Population Health (PopHel).

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Sanna Kailaheimo-Björkqvist @kailaheimosanna.bsky.social · 23/03/2026

New paper out! We found that severe mental disorders are more strongly related to childlessness than common mental health disorders, and that accounting for partnership and partner's mental health partly explains the association. @flux-consortium.bsky.social @pophel.bsky.social

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Eugenio Paglino @eugeniopaglino.bsky.social · 06/03/2026

🚨New paper out in Demographic Research🚨 and my first foray into demographic methods. It develops a new method to quantify how specific subpopulations drive demographic gaps. www.demographic-research.org/articles/vol... @demresjournal.bsky.social @pophel.bsky.social #demography #methods

demographic-research.org

Demographic Research - The groupwise decomposition: Estimating group-specific contributions to differences between demographic measures (Volume 54 - Article 14 | Pages 441–470)

Volume 54 - Article 14 | Pages 441–470

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Demography - the flagship journal of PAA @readdemography.bsky.social · 20/02/2026

“More Education & Fewer Children?”: Beck @juliahellstrand.bsky.social & Myrskyla assess how educ. enrollment/attainment contributed to fertility in Norway, finding that fertility decline is mainly linked to behavioral change. @pophel.bsky.social @mpidr.bsky.social read.dukeupress.edu/demography/a...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 13/02/2026

A new study providing a comprehensive assesment of different behavioral, psychological and social polygenic indices on mortality by @pophel.bsky.social researchers @hlaht.bsky.social, Kaarina Korhonen, Karri Silventoinen and Pekka Martikainen, among others, out in @elife.bsky.social .

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 28/01/2026

PopHel Talks: Next Monday, 2nd of February, @xuzong.bsky.social presents with title: AI in Health Inequality Research - Promises, Challenges, and an Agenda. 2nd of February, 02:00-02:45 PM (UTC+2) Please register for a Zoom link: elomake.helsinki.fi/lomakkeet/13...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 15/01/2026

We led an international effort to analyse changes in the parental socioeconomic composition of babies conceived during the COVID-19 pandemic across 15 countries. The results may have long-term implications for these birth cohorts. Read more here -> doi.org/10.1038/s414...

doi.org

Parental socioeconomic composition of birth cohorts changed during the COVID-19 pandemic - Nature Communications

The authors show that babies conceived during the COVID-19 pandemic have a different parental socioeconomic composition than expected had the pandemic not occurred.

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 03/12/2025

PopHel Talks: Next Monday, Elina Einiö will be presenting with title: Gendered housing consequences of divorce - An analysis of marital dyads from different-sex and female same-sex couples 🌈 8th December, 02:00-02:45 PM (UTC+2) Please register for a Zoom link: elomake.helsinki.fi/lomakkeet/13...

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Max Planck Institute for Demographic Research (MPIDR) @mpidr.bsky.social · 27/11/2025

🎓🎓🎓Congratulations, @philippdierker.bsky.social🎉🎉🎉 He successfully defended his doctoral thesis “Partnership Dynamics and Changes in Health and Well-Being: A Bidirectional Relationship”. His findings are relevant to family sociology, public health, social policy. www.demogr.mpg.de/en/news_even...

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Heini Väisänen @heinivaisanen.bsky.social · 17/11/2025

A new pre-print from @soc-misc.bsky.social project! We compare the number of self-reported miscarriages to healthcare records in Finland to better understand the quality of #miscarriage data. More info 👇 My co-authors: Hanna Remes, Lara Lehtoranta, @mccompans.bsky.social, Pekka Martikainen

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Xu Zong @xuzong.bsky.social · 11/11/2025

♻️🧠Thrilled to publish my first sole-authored paper in Socail Science & Medicine. This study revealed the link of childhood indoor air pollution with later-life cognitive health and its mechanisms, using national data and a machine learning approach. @pophel.bsky.social @helsinki.fi

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Hannu Lahtinen @hlaht.bsky.social · 05/11/2025

Our new study finds a strong association between voting in elections and subsequent mortality risk. Not formally open access, unfortunately but the publisher has generously made this (temporarily?) free to read! doi.org/10.1136/jech...

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Xu Zong @xuzong.bsky.social · 21/10/2025

✝️ Our study found: While religion may help those raised in difficult family environments to cope, it cannot fully offset the health risks associated with childhood adversity (e.g,parental mental health issues). @pophel.bsky.social @helsinki.fi @share-eric.bsky.social www.helsinki.fi/en/news/fair...

helsinki.fi

Religious upbringing linked to better physical health in old age | University of Helsinki

Could a religious upbringing offer a path to healthier ageing? While religion may help those raised in difficult family environments to cope, it cannot fully offset the health risks associated with po...

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Margherita Moretti @morettimarg.bsky.social · 16/10/2025

📣Excited to share that our paper on widowhood, its gender and educational inequalities, and evolution over time in Finland is out now in @readdemography.bsky.social !✨

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Demography - the flagship journal of PAA @readdemography.bsky.social · 16/10/2025

In “Evolution of Widowhood Lifespan," @morettimarg.bsky.social K Korhonen, @alysonvanraalte.bsky.social @timriffe1.bsky.social & P Martikainen find widowhood is less common & occurs later in life. @pophel.bsky.social @mpidr.bsky.social @opik-ikerketa.bsky.social read.dukeupress.edu/demography/a...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 15/10/2025

📢Doctoral Defence: Ulla Suulamo - "Long-term trends in mortality differences - Register-based studies in Finland, 1970–2020" 16 October 2025 at 12:00 Address: Porthania, PIII, Yliopistonkatu 3, Helsinki

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 10/10/2025

PopHel Talks: Next Monday, 13th October, Joonas Pitkänen will be presenting at PopHel Talks on family-based designs in childhood adversity research. 13th October, 02:00-02:45 PM (UTC+2) Please register for a Zoom link: elomake.helsinki.fi/lomakkeet/13...

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Xu Zong @xuzong.bsky.social · 08/10/2025

📣 Our new preprint used machine learning across 30 countries to reveal key life-course social determinants of loneliness among older adults. We also developed a Streamlined Loneliness Predictive Model for future applications. @pophel.bsky.social @share-eric.bsky.social doi.org/10.1101/2025...

doi.org

Machine Learning to Investigate Life-Course Social Determinants of Loneliness among Older Adults in the US, England, Israel, and 27 European Countries during the Pandemic

Background: Loneliness in later life is common and shaped by social determinants, with the COVID-19 pandemic and regional contexts further influencing disparities. Yet the role of life-course social d...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 07/10/2025

🚨Job alert!🚨 Helsinki Institute for Demography and Population Health is recruiting 2 postdocs. Join our team and investigate social inequalities in health! jobs.helsinki.fi/job/Helsinki... #postdoc #demography #socialsciences #socialdata

jobs.helsinki.fi

Two Postdoctoral Researchers on Health Inequalities

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 07/10/2025

📢 PopHel Newsletter for March - September 2025 is out!! 📰 To receive our newsletter you can subscribe to our mailing list by sending an email to mila.lyytinen@helsinki.fi 📩 You will also receive information on upcoming public talks 👩‍🏫 and open positions at PopHel‼️ www.helsinki.fi/en/helsinki-...

helsinki.fi

PopHel Newsletter | Helsinki Institute for Demography and Population Health | University of Helsinki

This newsletter shares our research activities at the Helsinki Institute for Demography and Population Health (PopHel).

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Xu Zong @xuzong.bsky.social · 01/10/2025

🚆🚀 Thrilled to share our paper has been published in Social Science & Medicine, as well as my second paper in this journal. We first reveal the olders' cognitive health externalities of high-speed rail and related mechanisms using ML causal approach and national data. @pophel.bsky.social

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 23/09/2025

📢Doctoral Defence: Juha Luukkonen: Alcohol Reforms and Health - Register studies about exposure to changing alcohol policies in adolescence and pregnancy 26 September 2025 at 12:00 University Main Building, room 3003 (Tekla Hultin), Fabianinkatu 33.

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University of Helsinki @helsinki.fi · 19/09/2025

Nuorempana alkoholia laillisesti ostaneet henkilöt ovat sairastuneet ja kuolleet kroonisiin alkoholiperäisiin sairauksiin useammin kuin henkilöt, jotka saivat laillisesti ostaa alkoholia 21–vuotiaana.

helsinki.fi

Nuoruudessa koettu alkoholipolitiikka yhteydessä myöhempään terveyteen | Helsingin yliopisto

Vapaammalle alkoholipolitiikalle nuoruudessaan altistuneet henkilöt olivat keski-ikään mennessä sairastuneet ja kuolleet alkoholiperäisiin sairauksiin useammin kuin tiukemmalle alkoholipolitiikalle nu...

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 19/09/2025

New study in European Child & Adolescent Psychiatry by Lotta Volotinen, Hanna Remes, Pekka Martikainen and Niina Metsä-Simola found that low parental education is more strongly associated with increased ADHD diagnosis only in families without identified history of ADHD. Read more: rdcu.be/eG9eY

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Olivia McEvoy @olivia-mcevoy.bsky.social · 17/09/2025

Co-convenor of my first symposium at #SLLS2025 @sllshome.bsky.social "Leveraging Nordic Register Data to Study Health Inequalities" with my colleagues at @pophel.bsky.social and presented forthcoming research on peer influence on substance use, which uses the biological linking within registry data.

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 17/09/2025

Our symposium from #SLLS2025 @sllshome.bsky.social consisted of research from Shubh Sharma @eugeniopaglino.bsky.social @olivia-mcevoy.bsky.social mcevoy.bsky.social @moberndorfer.bsky.social orfer.bsky.social Lauren Bishop and registry data expertise from Hanna Remes. Thanks to all who attended!

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Lotta Lintunen @lintuslotta.bsky.social · 05/09/2025

New winds are blowing 🌬⛵️ After submitting my PhD at @eui-sps.bsky.social this summer, I've started working at the MaxHel @pophel.bsky.social. Grateful for my new colleagues who make every lunch break memorable—like sailing together yesterday! Ready to embrace new horizons in my academic journey.

A photo from a sailing boat with Helsinki in sight.

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Xu Zong @xuzong.bsky.social · 03/09/2025

👶➡️🧑‍🦳 Our study shows that adverse childhood circumstances such as lack of friendships, poor housing, increase the risk of 💔 suicidal thoughts in later life, highlighting the need for a lifespan approach to suicide prevention. @pophel.bsky.social @share-eric.bsky.social www.helsinki.fi/en/news/fair...

helsinki.fi

Lack of childhood friendships linked to suicidal thoughts in over-50s | University of Helsinki

An international University of Helsinki study has found that adverse childhood circumstances increase the risk of suicidal ideation in later life.

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FLUX @flux-consortium.bsky.social · 01/09/2025

❔ Miten perhevapaiden käyttö jakautuu? ❔ Miten ne vaikuttavat äitien työmarkkina-asemaan? Entä vanhempien, lasten ja perheiden hyvinvointiin? ❔ Miten perhevapaita pitäisi uudistaa? 📅 to 18.9. klo 12-16 🗺️ Helsingin yliopisto, Juhlasali 303 #perhevapaat #syntyvyys fluxconsortium.fi/fi/news/perh...

fluxconsortium.fi

Perhevapaat 2020-luvulla: vaikutukset ja uudistustarpeet - Flux Consortium

Torstaina 18.9.2025 klo 12.00–16.00 Helsingin yliopisto, Juhlasali 303 (Unioninkatu 33, Helsinki) Suomessa perhevapaat jakautuvat yhä epätasaisesti, ja järjestelmä kaipaa uudistamista....

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 27/08/2025

📢Doctoral Defence: Philipp Christian Dierker: Partnership dynamics and changes in health and well-being - A bidirectional relationship 29 August 2025 at 13:00 tapahtumat.helsinki.fi/en-FI/page/6...

tapahtumat.helsinki.fi

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University of Helsinki Event calendar

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Helsinki Institute for Demography and Population Health @pophel.bsky.social · 26/08/2025

Parental education and income strongly predicted adolescents' COVID-19 vaccine uptake 💉 A new study by Sanni Variskallio et al. out now in Vaccine: doi.org/10.1016/j.va...

Odds ratios of having received at least one dose of the COVID-19 vaccine among adolescents aged 12–17 years by parental education, 1 January 2021 to 31 December 2022.

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Eugenio Paglino @eugeniopaglino.bsky.social · 11/08/2025

New study 🚨 out in @jama.com! We find that California wildfires🔥in January may have contributed 440 excess deaths in Los Angeles County. This estimate significantly exceeds the 30 direct fatalities linked to these events jamanetwork.com/journals/jam... @pophel.bsky.social @helsinki.fi

jamanetwork.com

Excess Deaths Attributable to the Los Angeles Wildfires From January 5 to February 1, 2025

This study aims to estimate the number of excess deaths attributable to the Los Angeles wildfires using an interrupted time series design.

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Max Planck Institute for Demographic Research (MPIDR) @mpidr.bsky.social · 25/08/2025

Out-of-Home Care for Children in Finland Has Doubled Since 1993! Scientists @mpidr.bsky.social & @helsinki.fi analyzed how the risk of Finnish children being placed in out-of-home care has evolved. www.demogr.mpg.de/go/ohc ‪A.Hiilamo, J.Pitkänen, @morettimarg.bsky.social P.Martikainen, M.Myrskylä

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