Feeling 40 at 80, your body still bouncy, your risk of disease no higher, and your zest for life intact… the longevity dream has its appeal. But for some of those spending the most on it, it’s become ...

Leo Tolstoy famously opens his novel Anna Karenina with the words, "All happy families are alike; each unhappy family is unhappy in its own way." Statisticians have derived from here something they've ...

Diagnostic errors crop up in all kinds of settings, often with very serious consequences. What might cause them? The Institute of Medicine report “Improving Diagnosis in Health Care” (Balogh et al., ...