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JAMA Network


New-onset nonarteritic anterior ischemic optic neuropathy and initiators of semaglutide in US veterans with type 2 diabetes

A nationwide cohort study found that semaglutide initiators had a significantly higher risk of developing nonarteritic anterior ischemic optic neuropathy compared to sodium-glucose cotransporter-2 inhibitor initiators. The absolute risk was low, but clinicians and patients should be aware of this rare but evident increased risk.

SourceJAMA Network·JournalJAMA Ophthalmology·DateFeb 12, 2026

Generative AI applications use among us youth

A cross-sectional study found that up to half of adolescents in the US were using generative AI apps, while a small subset engaged in heavy use. The study highlights the need for future research on individual differences in GenAI use and its impacts on adolescent development.

SourceJAMA Network·JournalJAMA Network Open·DateFeb 2, 2026

Sex and all-cause mortality in the US, 1999 to 2019

A cohort study of 47,000 adults found that males had a 63% greater risk of all-cause mortality compared to females after adjusting for demographic and behavioral factors. The study suggests intrinsic biological factors, such as sex hormones or immune response, may contribute to these sex differences in mortality.

SourceJAMA Network·JournalJAMA Network Open·DateJan 30, 2026

High-deductible health plans and mortality among cancer survivors

A cross-sectional analysis of nationwide population data reveals that high-deductible health plans are associated with worse overall and cancer-specific survival among cancer survivors. The study suggests that financial disincentives for medical care may lead to delayed or foregone necessary care, ultimately worsening cancer outcomes.

SourceJAMA Network·JournalJAMA Network Open·DateJan 29, 2026

Cancer incidence and mortality with aspirin in older adults

A recent study found that low-dose aspirin use was not associated with incident cancer incidence in older adults, contrary to previous findings. However, the study revealed a significant elevation in cancer mortality risk during the randomized clinical trial period, which did not persist after the trial ended.

SourceJAMA Network·JournalJAMA Oncology·DateJan 29, 2026

Leading cancer deaths in people younger than 50 years

Cancer mortality rates have decreased for breast cancer and leukemia, despite increasing incidence, while colorectal cancer has become the leading cause of death among US young adults. Colorectal cancer surpasses lung, breast, and prostate cancers as the leading cancer-related death in people under 50 years old.

SourceJAMA Network·JournalJAMA·DateJan 22, 2026

Pregnancy- and abortion-related mortality in the US, 2018-2021

A recent study published in JAMA Network Open found that abortion bans are associated with a significant increase in pregnancy-related mortality in the United States. The study suggests that restricting access to safe abortion care forces pregnant individuals to take on increased health risks, leading to higher mortality rates.

SourceJAMA Network·JournalJAMA Network Open·DateJan 21, 2026