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October 2025

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Mental disorder transmission is known to be intergenerational but it remains unclear if the associations might be attributable to unmeasured shared familial factors (e.g., genetics, shared environments). In this issue, Mengping Zhou and colleagues investigate the associations between parental psychiatric conditions and offspring psychiatric, behavioral, and psychosocial outcomes, in 15,603 Swedish individuals (born to 7,742 monozigotic-twin parents), using a children-of-monozygotic-twins study design. They report that familial factors likely contribute substantially to the intergenerational transmission of parental psychiatric conditions to offspring psychiatric, behavioral, and psychosocial outcomes, but that nonshared factors or direct causal effects may also play a role. Zhou et al. 2025

Image Credit: Michael Coltman via Unsplash

Editorial

Research Articles

Changes in child mortality and population health following 10 years of health systems strengthening in rural Madagascar: A longitudinal cohort study

Andres Garchitorena, Ann C. Miller, Hobisoa L. Razanadranaivo, Luc Rakotonirina, Sarah-Anne Barriault, Benedicte Razafinjato, Jacques Aubin Kotchofa, Feno Rafenoarimalala, Rado J. L. Rakotonanahary, Felana A. Ihantamalala, Michelle V. Evans, Andoniaina Tojoharimanda Tolojananahary, Vero Ramanandraitsiory, Andriatiana Tsitinomen’nyaina, Fiainamirindra Anjaratiana Ralaivavikoa, Estelle M. Raza-Fanomezanjanahary, Marius Randriamanambintsoa, Samuel Andrianambinina, Lethicia Lydia Yasmine, Megan B. Murray, Michael L. Rich, Laura F. Cordier, Karen E. Finnegan, Matthew H. Bonds, Zely Arivelo Randriamanantany

Zinc as adjunct treatment for clinical severe infection in young infants: A randomized double-blind placebo-controlled trial in India and Nepal

Nitya Wadhwa, Antara Sinha, Sudha Basnet, Sugandha Arya, Raghvendra Singh, Mamta Jajoo, Ayushi, Dharmendra Sharma, Ajay Kumar, Harish K. Pemde, Varinder Singh, Ram H. Chapagain, Anuradha Govil, Debjani R. Purakayastha, Ganesh P. Shah, Medha Mittal, Laxman P. Shrestha, Harish Chellani, Halvor Sommerfelt, Tor A. Strand, Shinjini Bhatnagar, the Zinc Sepsis Study Group

Comparative risk of post-acute sequelae following SARS-CoV-2 or influenza virus infection: A retrospective cohort study among United States adults

Joseph A. Lewnard, Debbie E. Malden, Vennis Hong, Jessica Skela, Leora R. Feldstein, Sharon Saydah, Iris Anne C. Reyes, Rulin Hechter, Lina S. Sy, Bradley K. Ackerson, Sara Y. Tartof

Immunogenicity and safety of DS-5670d, an omicron XBB.1.5-targeting COVID-19 mRNA vaccine: A phase 3, randomized, active-controlled study

Ami Kawamoto, Masahiro Hashida, Katsuyasu Ishida, Kei Furihata, Aisaku Ota, Kaori Takahashi, Sachiko Sakakibara, Takashi Nakano, Fumihiko Takeshita

Prognostic significance of CD8+ T cell Spatial Biomarkers in ER+ and ER− breast cancer: A retrospective cohort study

Andrew E. Walker, Xiaohua Gao, Qichen Wang, Gabriela De la Cruz, Didong Li, Charles M. Perou, Joel Saltz, James Steve Marron, Katherine A. Hoadley, Melissa A. Troester

Association between parental psychiatric conditions and offspring psychiatric, behavioral, and psychosocial outcomes: A Swedish population-based children-of-monozygotic twins study

Mengping Zhou, Henrik Larsson, Brian M. D’Onofrio, Mikael Landén, Ralf Kuja-Halkola, Zheng Chang, Isabell Brikell, Paul Lichtenstein, Erik Pettersson

Impact of excessive social media use on adolescent depression and its consequences in France: An individual-based microsimulation model

Nicolas Hoertel, Mark Olfson, Carlos Blanco, Margot Biscond, Frédéric Limosin, Marina Sánchez-Rico, Martin Blachier, Henri Leleu

Parental opioid prescriptions and the risk of opioid use in adolescents and young adults: The HUNT Study linked with prescription registry data

Anna Marcuzzi, Paulo Ferreira, Paul Jarle Mork, Manuela L. Ferreira, Karoline Moe, Sigmund Gismervik, Anne Lovise Nordstoga, Tom Ivar Lund Nilsen

Estimating the effect on obesity of delaying tax-based interventions in Mexico: A modeling study

Martha Carnalla, Francisco Reyes-Sánchez, Alexis Alonso-Bastida, Alan Reyes-García, Alessio Hernández-Rojas, C. Gabriela García, Isabel Junquera-Badilla, Ana Basto-Abreu, Boyd Swimburn, Juan A. Rivera, Tonatiuh Barrientos-Gutiérrez

Differences in growth trajectories in breastfed HIV-exposed uninfected and HIV-unexposed infants in Kenya: An observational cohort study

Ruchi Tiwari, Benson O. Singa, Priscah Lihanda, Mame M. Diakhate, Eric Ochola, Lucy Bunyige, Christina Sherry, Barbra A. Richardson, Dalton Wamalwa, Donna M. Denno, Grace C. John-Stewart, Grace M. Aldrovandi, Christine J. McGrath

Effectiveness of a brief intervention and text-based booster in the emergency department to reduce harmful and hazardous alcohol use: A pragmatic randomized adaptive clinical trial in Moshi, Tanzania

Catherine A. Staton, Linda Minja, Joao Vitor Perez de Souza, John A. Gallis, Pollyana Coelho Pessoa Santos, Mia Buono, Francis Sakita, Kennedy Ngowi, Judith Boshe, Ashley J. Phillips, Joao Ricardo Nickenig Vissoci, Blandina T. Mmbaga

NT-proBNP testing for heart failure diagnosis in people with atrial fibrillation: A diagnostic accuracy study

Nicholas R. Jones, Kathryn S. Taylor, José M. Ordóñez-Mena, Clare R. Goyder, F. D. Richard Hobbs, Clare J. Taylor

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