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GLP-1 drugs could lead to cost savings for workers and their employers by reducing employee sick leave, a new economic study finds. (Cerullo, 7/21)

The weight-loss drug wars reached a new level of intensity Tuesday as Novo Nordisk sued Eli Lilly, accusing its arch-rival of misleading advertising. Lilly and Novo are the market leaders in GLP-1 drug sales, controlling the lion's share of the surging segment. (Bomey, 7/21)

Long-term exposure to residential road traffic noise was associated with an increased risk of Parkinson's disease, a study of more than 3 million adults in Denmark showed. (George, 7/21)

People who frequently watch television in midlife may be more likely to develop brain changes associated with memory problems, cognitive decline and dementia later in life, according to new research. The study, published in Alzheimer’s & Dementia: The Journal of the Alzheimer’s Association, suggests that what people do while sitting may matter just as much as how long they spend sitting. (Azzurra Volpe, 7/21)

A University of Florida study is shedding new light on the biological changes linked to adolescent idiopathic scoliosis, an abnormal curvature of spine found in many children. (Mayer, 7/21)

Peptide researcher Joshua Kritzer explains why mouse studies and online testimonials aren't enough to prove a treatment is safe or effective. (Talpos, 7/21)

Sanae Takaichi has said she gets just “zero to three hours” of sleep a night, prompting a debate in the country over work-life balance and the hazards of sleep deprivation. (Hernández and Ueno, 7/22)