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JAMA Network


Early metformin in gestational diabetes

A randomized clinical trial found that early metformin treatment did not improve insulin initiation or fasting glucose levels in pregnant women with gestational diabetes. Further investigation into larger trials is warranted based on prespecified secondary outcome data.

SourceJAMA Network·JournalJAMA·DateOct 3, 2023

Loneliness and risk of Parkinson disease

A large study of 491,000 participants found that loneliness was associated with an increased risk of developing Parkinson's disease. The findings suggest that loneliness is a significant psychosocial determinant of health and may contribute to the development of the neurodegenerative disorder.

SourceJAMA Network·JournalJAMA Neurology·DateOct 2, 2023

Suicide risks of health care workers in the US

A study of 1.84 million US adults from 2008 to 2019 found registered nurses and healthcare support workers were more likely to attempt or die by suicide than non-healthcare workers. The findings highlight the need for improved mental health protections for these workers.

SourceJAMA Network·JournalJAMA·DateSep 26, 2023

Consumption of ultraprocessed food and risk of depression

A recent study suggests that higher intake of ultraprocessed foods, particularly those with artificial sweeteners, may be associated with an increased risk of depression. The exact mechanism is unknown, but researchers believe that artificial sweeteners could play a role in the development of depression.

SourceJAMA Network·JournalJAMA Network Open·DateSep 20, 2023

Surrogate adiposity markers and mortality

A large UK-based study found that waist-to-hip ratio was the strongest predictor of mortality, regardless of body mass index. The study's findings suggest that focusing on adiposity distribution rather than overall weight may be a more effective approach to reducing mortality risk.

SourceJAMA Network·JournalJAMA Network Open·DateSep 20, 2023

Economic burden of US youth violence injuries

The economic burden of youth violence in the US has reached $122 billion, driven primarily by medical care, lost productivity, and avoidable mortality from male firearm homicides. Prevention strategies can help mitigate this substantial economic burden.

SourceJAMA Network·JournalJAMA Pediatrics·DateSep 18, 2023

Cost of public health insurance for US-born and immigrant adults

A study of 44,000 low-income adults found that providing public health insurance to immigrants has a lower direct cost than for US-born individuals. Upon coverage, immigrants' healthcare utilization remains relatively modest, contradicting the assumption that offering insurance would significantly impact healthcare expenses.

SourceJAMA Network·JournalJAMA Network Open·DateSep 15, 2023