Big Pharma pays billions for direct-to-consumer TV drug ads—is it time to ban them? Focused ultrasound obliterates liver tumors with minimal side effects; Nurse tricks woman into believing she’s dying of cancer to cash in on her $1.5 million life insurance policy; Arizona bans insurance denial by AI automated systems; Study overturns view that very low-carb diets are bad for kidney disease patients; Strategies for reviving a lagging thyroid.