Every week, we ask readers to think like an advice columnist and submit their advice to a question Carolyn Hax hasn’t answered. Their daughter called her “judgmental” and left at 18 ...

Carolyn Johnson is a science reporter. She previously covered the business of health, the pharmaceutical industry and the affordability of health care to consumers. Before coming to the Post, she ...

A clinical trial is defined by NIH as a research study in which one or more human subjects are prospectively assigned to one or more interventions (which may include placebo or other control) to ...