Why Minds Break · Ian Pitchford · Chapter 8 of 10

Distress, Defence and Dysregulation

Name: Why Minds Break
Author: Ian Pitchford

The chapter separates descriptions of common mood and anxiety problems from explanations of them, and uses premenstrual distress to show an adaptive story failing while a hormonal finding holds.

The chapter starts from Oliver James's Britain on the Couch, which blamed a supposed epidemic of depression and anxiety on modern capitalism failing needs that humans evolved to have. The best global models find age-standardised prevalence flat over the period examined, which weakens that claim without proving modern life harmless. Adolescent distress is different: surveys in the United States and England recorded marked rises, especially among girls, and one American series later fell. Social media is a leading suspect, but correlations are small and experiments show modest average effects, so Jonathan Haidt's causal case is judged to outrun the evidence.

It then examines the idea that distress is a defence. Randolph Nesse's smoke detector principle explains why cheap protective responses may fire often, though this does not make every episode of anxiety or depression protective. Work following John Price and Paul Gilbert links depression to social defeat; feeling defeated or trapped is strongly correlated with distress, but the data are cross-sectional and not specific to depression. Bargaining, rumination and infection-defence accounts of low mood all have limited support. A meta-analysis found only a small link between depressive symptoms and reduced learning from good news. Steven Maier and Martin Seligman's revision of learned helplessness, in which passivity is the default and control is learned, changes the animal mechanism without settling human depression. Stress hormones, the hippocampus and inflammation offer leads of uneven causal strength. Prepared fear learning, seen in Cook and Mineka's monkey experiments, fits the pattern of common phobias without showing that modern dangers cannot be feared.

The central worked case is the author's own 2001 hypothesis that premenstrual changes promoted mating outside the pair with genetically suitable men. The chapter tests it link by link. Large hormone-tracked studies do not support the predicted cycle shifts in mate preference, although desire itself appears to rise around the estimated fertile window. Preference for immune-dissimilar partners has not replicated reliably. Most cited estimates of extra-pair paternity are low, and few prospective studies find a specifically premenstrual mood pattern. The hypothesis is therefore retired.

Something survives. When the ovarian cycle is suppressed and hormones are then restored, symptoms of premenstrual dysphoric disorder return in a selected group of susceptible women; in one small study they rose mainly in the first month of restored hormones. No computation was measured, so the chapter records a hormone-sensitive dependency, not a fault in precision weighting. It closes by setting out what a cognitive explanation would need: specified quantities, rival models, prospective prediction and interventions on the proposed process. Open questions remain, among them the higher rate of diagnosed depression in women.

Questions the chapter asks

Is depression really becoming more common, and is modern life to blame?
Could low mood or anxiety be a defence shaped by evolution rather than a fault?
What do hormone experiments show about premenstrual dysphoric disorder, and what do they leave unexplained?

This is a summary of the chapter, written for this site; it is not an extract from the book. Coming soon from Amazon in Kindle, paperback and hardback editions.