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JAMA Network


Long-term obesity and biological aging in young adults

Chronic health issues may emerge from long-term obesity in young adults, leading to epigenetic alterations, telomere attrition, and impaired nutrient sensing. The study found a significant association between long-term obesity and accelerated biological aging, highlighting the importance of addressing obesity early on.

SourceJAMA Network·JournalJAMA Network Open·DateJul 11, 2025

Hepatitis C screening in emergency departments

A new study found that a nontargeted screening approach can identify more patients with hepatitis C virus infections than traditional targeted screening methods. The results highlight the need for improved treatment models, as patients who went from diagnosis to sustained virologic response increased significantly.

SourceJAMA Network·JournalJAMA·DateJul 9, 2025

Cannabidiol and liver enzyme level elevations in healthy adults

A randomized clinical trial found that cannabidiol (CBD) administration led to liver enzyme level elevations in 5.6% of participants and potential drug-induced liver injury in 4.9%. Hepatic enzymes returned to normal within weeks after discontinuation. Further research is needed on CBD's long-term effects and safety.

SourceJAMA Network·JournalJAMA Internal Medicine·DateJul 7, 2025

Social outcomes among adults with hearing aids and cochlear implants

A systematic review and meta-analysis reveals that adults with hearing loss can enhance social engagement and functional outcomes by using hearing aids or cochlear implants. The study suggests that these devices should be encouraged for individuals with hearing loss to potentially improve their quality of life.

SourceJAMA Network·JournalJAMA Otolaryngology–Head & Neck Surgery·DateJul 3, 2025

Racial inequities and access to COVID-19 treatment

A cross-sectional study revealed racial disparities in COVID-19 treatment, with targeted interventions like expanding rapid test access and virtual care potentially improving equity. The findings suggest that encounter-level factors, such as differences in diagnostic test type and site of care, contribute to these inequities.

SourceJAMA Network·JournalJAMA Network Open·DateJul 1, 2025

Insurance churn and the COVID-19 pandemic

The Families First Coronavirus Response Act led to a significant decrease in Medicaid health insurance loss. The study found that the Act reduced the risk of losing health insurance for individuals enrolled in the Medicaid program.

SourceJAMA Network·JournalJAMA Health Forum·DateJun 27, 2025

U.S. neonatal mortality from perinatal causes

Mortality from slow fetal growth and malnutrition has increased nearly 2% annually, potentially linked to impaired prenatal nutrition. Medical advancements, improved prenatal care, and neonatal intensive care interventions may have contributed to the overall decline in U.S. neonatal mortality.

SourceJAMA Network·JournalJAMA Pediatrics·DateJun 23, 2025

Food insecurity in US surgical patients

Surgical patients in the US are at a significant risk of experiencing food insecurity, according to a recent study published in JAMA Surgery. The research highlights the need for interventions such as food insecurity screening to improve food access and overall health outcomes for this vulnerable population.

SourceJAMA Network·JournalJAMA Surgery·DateJun 18, 2025

Alcohol-associated liver disease mortality

This cross-sectional study reveals a substantial rise in alcohol-associated liver disease mortality, particularly among women and younger adults. The findings highlight the importance of targeted public health initiatives to address this growing health concern.

SourceJAMA Network·JournalJAMA Network Open·DateJun 11, 2025