One of the world´s most respected psychiatrists provides a much-needed new evolutionary framework for making sense of mental illness.

With his classic book Why We Get Sick, Randolph Nesse established the field of evolutionary medicine. Now he returns with a book that transforms our understanding of mental disorders by exploring a fundamentally new question. Instead of asking why certain people suffer from mental illness, Nesse asks why natural ѕelection has left us all with fragile minds.