We think of the modern woman as sexually liberated – if anything, we’re told we’re oversexed. Yet a striking number of women are dissatisfied with their sex lives. Over half of women report having a sexual complaint, whether that’s lack of desire or difficulty reaching orgasm. But this issue doesn’t get much press; the urge is to ignore or medicalize it (witness the quest for ‘pink Viagra’). If so many ordinary women suffer from...