JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, TUESDAY, FEBRUARY 25, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: The findings of this study indicate that higher adherence to the Mediterranean diet is associated with a modest reduction in the risk of obesity-related cancers, independent of adiposity measures. Further research is needed to clarify the mechanisms by which the Mediterranean diet may contribute to cancer prevention.

Corresponding Author: To contact the corresponding author, Inmaculada Aguilera-Buenosvinos, PhD, email iaguilerabuenosvinos@gmail.com.

(doi:10.1001/jamanetworkopen.2024.61031)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, MONDAY, FEBRUARY 24, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: The results of this study suggest that mRNA COVID-19 vaccination may be a protective factor against post–COVID-19 condition in children following SARS-CoV-2 infection. These findings suggest benefits of COVID-19 vaccination beyond those associated with protection against acute COVID-19 and may encourage increased pediatric uptake.

Corresponding Author: To contact the corresponding author, Anna R. Yousaf, MD, email pgy6@cdc.gov.

(doi:10.1001/jamanetworkopen.2024.59672)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, MONDAY, FEBRUARY 24, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: This cohort study found no increase in sudden cardiac arrest/sudden cardiac death in young competitive athletes in the U.S. during the COVID-19 pandemic, suggesting that reports asserting otherwise were overestimating the cardiovascular risk of COVID-19 infection, vaccination, and myocarditis. Many athlete cases shown in social media video montages occurred before the pandemic yet claimed COVID-19 infection or vaccination raised the risk of sudden cardiac arrest/sudden cardiac death.

Corresponding Author: To contact the corresponding author, Jonathan A. Drezner, MD, email jdrezner@uw.edu.

(doi:10.1001/jamanetworkopen.2024.61327)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, FRIDAY, FEBRUARY 21, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: In this cohort study using a target trial emulation, a higher proportion of weight loss after initiating anti-obesity medications within 1 year was associated with a lower risk of 5-year and 10-year revision among patients with obesity undergoing joint replacement. These results suggest that anti-obesity medication use, with relatively safe and sustainable weight loss, may be an effective strategy for improving implant survivorship of hip and knee replacements in the obese population.

Corresponding Author: To contact the corresponding authors, email Chao Zeng, MD, PhD (zengchao@csu.edu.cn) and Guanghua Lei, MD, PhD (lei_guanghua@csu.edu.cn).

(doi:10.1001/jamanetworkopen.2024.61200)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, FRIDAY, FEBRUARY 21, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: In this systematic review and dose-response meta-analysis, a daily 1-hour increment in digital screen time was associated with 21% higher odds of myopia (nearsightedness) and the dose-response pattern exhibited a sigmoidal shape, indicating a potential safety threshold of less than 1 hour per day of exposure, with an increase in odds up to 4 hours. These findings can offer guidance to clinicians and researchers regarding myopia risk.

Corresponding Author: To contact the corresponding author, Young Kook Kim, PhD, email md092@naver.com.

(doi:10.1001/jamanetworkopen.2024.60026)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, THURSDAY, FEBRUARY 20, 2025

Media advisory: The full study and commentary are linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.

About The Study: This cohort study found significant inequities in incidence of behavioral flags in the electronic health record among racially and socioeconomically marginalized pediatric patients. This finding was most pronounced for Black or African American patients younger than 8 years, suggesting that this phenomenon may be a response to Black families rather than specific patient behavior.

Corresponding Author: To contact the corresponding author, April Edwell, MD, MAEd, email April.edwell@ucsf.edu.

(doi:10.1001/jamanetworkopen.2024.61079)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, WEDNESDAY, FEBRUARY 19, 2025

Media advisory: The full study and commentary are linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: The U.S. has achieved a new post-pandemic hospital occupancy steady state 11 percentage points higher than it was pre-pandemic. This persistently elevated occupancy appears to be driven by a 16% reduction in the number of staffed U.S. hospital beds rather than by a change in the number of hospitalizations. Experts in developed countries have posited that a national hospital occupancy of 85% constitutes a hospital bed shortage (a conservative estimate). The findings of the current study show that the U.S. could reach this dangerous threshold as soon as 2032, with some states at much higher risk than others.

Corresponding Author: To contact the corresponding author, Richard K. Leuchter, MD, email rleuchter@mednet.ucla.edu.

(doi:10.1001/jamanetworkopen.2024.60645)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. (ET), TUESDAY, FEBRUARY 18, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.

About The Study: In this survey study, disparities in tobacco use existed across cumulative disabilities. Despite declines in tobacco use over time, differences in use across cumulative disabilities persisted or worsened, especially among those with 3 or more disabilities. Targeted prevention, screening, and cessation efforts inclusive of multiple products are needed.

Corresponding author: To contact the corresponding author, Michael J. Parks, Ph.D., email Michael.parks@nih.gov.

(doi: 10.1001/jamanetworkopen.2024.60471)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. (ET), TUESDAY, FEBRUARY 18, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication.

About The Study: This cross-sectional study found a statistically significant increase in abortions for Colorado residents in association with the implementation of Texas SB8. This aligns with reports from area clinicians who experienced dramatic increases in patient demand after SB8, also reported by the media, resulting in delayed appointments for everyone.

Corresponding author: To contact the corresponding author, Kelly A. DeBie, J.D., email kelly.debie@colostate.edu.

(doi: 10.1001/jamanetworkopen.2024.60460)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, FRIDAY, FEBRUARY 14, 2025

Media advisory: The full study and commentary are linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: The findings of this cross-sectional study of Black and white women with breast cancer suggest that perceived stress, perceived inadequate social support, perceived racial and ethnic discrimination, and neighborhood deprivation were associated with deleterious alterations to the systemic and tumor immune environment, particularly for Black women. Understanding biology as a possible mediator of cancer health disparities may inform prevention and public health interventions.

Corresponding Author: To contact the corresponding author, Stefan Ambs, PhD, MPH, email ambss@mail.nih.gov.

(doi:10.1001/jamanetworkopen.2024.59754)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, FRIDAY, FEBRUARY 14, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: This cohort study of Finnish children and adolescents found that higher physical activity and lower screen time from childhood were associated with perceived stress and depressive symptoms in adolescence. These findings emphasize reducing screen time and increasing physical activity to promote mental health in youth.

Corresponding Author: To contact the corresponding author, Eero A. Haapala, PhD, email eero.a.haapala@jyu.fi.

(doi:10.1001/jamanetworkopen.2024.60012)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, WEDNESDAY, FEBRUARY 12, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: Medicare Advantage-enrolled and commercially insured individuals were disproportionately more likely to use telehealth, with overall substance use disorder treatment (SUDT) increasing over time. Medicaid-covered individuals were underrepresented within telehealth SUDT utilization, with overall SUDT declining. This finding raises equity concerns for Medicaid populations. For rural individuals, telehealth may be reducing disparities, with overall SUDT increasing throughout the public health emergency to a greater extent than for urban individuals.

Corresponding Author: To contact the corresponding author, Lauryn Saxe Walker, PhD, MPH, email lauryn@vahealthinnovation.org.

(doi:10.1001/jamanetworkopen.2024.59606)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, TUESDAY, FEBRUARY 11, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: This study has 3 findings in a prepandemic context. First, approximately 1 in 9 U.S. residents used a dietary supplement for perceived immune benefits (supplements to prevent colds or boost the immune system), and such usage varied by several sociodemographic and health characteristics. Second, label claims related to immune benefits consistently appeared on over half of dietary supplements taken for perceived immune benefits. Lastly, the prevalence of dietary supplement use for perceived immune benefits due to a doctor recommendation and dietary supplement use exclusively for perceived immune benefits were both generally low, but both increased among older adults and individuals in poorer health.

Corresponding Author: To contact the corresponding author, Jaime J. Gahche, PhD, MPH, email jaime.gahche@nih.gov.

(doi:10.1001/jamanetworkopen.2024.59291)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

#  #  #

For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, TUESDAY, FEBRUARY 11, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: In this cohort study of U.S. youths, attention-deficit/hyperactivity disorder (ADHD) symptoms were associated with the onset of nicotine and tobacco use. The findings highlight the importance of early diagnosis and effective treatment of ADHD to alleviate symptoms and reduce the risk of later nicotine and tobacco use.

Corresponding Author: To contact the corresponding author, Sean Esteban McCabe, PhD, email plius@umich.edu.

(doi:10.1001/jamanetworkopen.2024.58834)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

#  #  #

For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, FRIDAY, FEBRUARY 7, 2025

Media advisory: The full study is linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: In this study of older individuals, decline in body mass index, waist circumference, and high-density lipoprotein (HDL) occurred up to a decade before dementia diagnosis. These findings provide insights into cardiometabolic changes preceding dementia and the potential for early monitoring and intervention.

Corresponding Author: To contact the corresponding author, Zimu Wu, PhD, email zimu.wu1@monash.edu.

(doi:10.1001/jamanetworkopen.2024.58591)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

#  #  #

For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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JAMA Network Open

EMBARGOED FOR RELEASE: 11 A.M. ET, THURSDAY, FEBRUARY 6, 2025

Media advisory: The full study and commentary are linked to this news release.

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About JAMA Network Open: JAMA Network Open is an online-only open access general medical journal from the JAMA Network. On weekdays, the journal publishes peer-reviewed clinical research and commentary in more than 40 medical and health subject areas. Every article is free online from the day of publication. 

About The Study: In this cohort study of all residents of Ontario, Canada, individuals with incident hospital-based cannabis use disorder care were at markedly increased risk of death compared with the general population. These findings suggest important clinical and policy implications, given global trends toward cannabis legalization and market commercialization accompanied by increasing cannabis use and cannabis use disorders. 

Corresponding Author: To contact the corresponding author, Daniel T. Myran, MD, MPH, email dmyran@ohri.ca.

(doi:10.1001/jamanetworkopen.2024.57852)

Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.

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For more information, contact JAMA Network Media Relations at 312-464-JAMA (5262) or email media relations.

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