In “The Age of Diagnosis,” Suzanne O’Sullivan challenges some common assumptions about how we detect and treat disease.

In “Doctored,” Charles Piller uncovers evidence that many important Alzheimer’s studies are based on faulty data.

The current system of supervised release in lieu of imprisonment may do more harm than good, some experts say. How can society do a better job of rehabilitating law-breakers while keeping them from re-offending?

Two new books chronicle the shortcomings of the nation's overwhelmed and often chaotic medical care system.

Doctors are experimenting with health-care reminders to promote vaccination, mammograms, and more.

Even for 60ish youngsters, researchers reaffirm that exercise is essential. But just walking won’t cut it — break out the weights and go for strength training too.

Physicians say the process to get approval from insurance companies before treating patients has gotten absurd

Every state recognizes brain death. But rules vary, and the true line separating life from death is ambiguous

TIMELINE: From colonial efforts to control smallpox outbreaks to antimalarial campaigns targeting mosquitoes, the American effort grew for centuries. But cutbacks have weakened it in the past decades.

The quality-adjusted life year seeks to determine the value of health care treatments. Some patients are wary.

Not all surgeons are equally skilled with a scalpel. Doctors are developing new ways to test — and improve — operating room performance.

The lack of a standard labeling system can lead to confused doctors and worse care.