A fall sent a man to the ER, bleeding. Scans revealed three fused kidneys on his right side, no left kidney, and a congenital fistula.

A clinical trial found a ketogenic diet cut liver fat by 67%, despite similar weight loss among people following three different diets.

Surgeons in Baku removed a giant keratin horn from a man's right cheek. Pathology then found squamous cell carcinoma sitting at its base.

A genetically modified pig kidney kept a man with kidney failure off dialysis for nine months before he received a human donor kidney.

A 43 mm sewing needle pierced a woman's larynx after she held it between her lips while sewing. She ate dinner with no symptoms at all.

A new Holmes documentary premiered at Telluride. The patient-harm side of Theranos and the lab-oversight question remain unresolved.

Smokers reported more loneliness than nonsmokers across 15 countries, and loneliness rose faster over two years. The study cannot prove causation.

In a 63-person randomized trial, laughter therapy eased COPD breathlessness about as well as pursed-lip breathing. Neither reduced care dependence.

Microplastics were found more often in the lungs of cancer patients than in patients without cancer. The direction of causation remains unresolved.

Austrian smoking fell from 24% to 16%, but alternative nicotine use climbed to 17%. Researchers say the epidemic changed shape rather than shrinking.