How songbirds' striking colors put them at risk

Association of mental distress with chronic diseases in 1.9 million individuals: A population-based cross-sectional study finds a dose-response gradient between mental distress levels and the risk of all chronic diseases except skin cancer.

Alzheimer’s Disease Risk 50–80% Higher in Older Adults Who Caught COVID-19

Second-hand smoke a possible asthma risk for future generations, study finds