Peter Gotzsche, a campaigner against antidepressants, says they have more risks than benefits. Sometimes though, the search for a pill leads us back to health.

Patients with advanced cancer die, thinking remorsefully that if they had only held out, a cure for cancer may have appeared. In the face of current evidence, we owe them betterShe was 49 years old, a mother of two. Our one and only conversation, on...