This episode looks at the effects of modern life and ageing: how excessive cleanliness affects asthma and allergies, and how poverty gets under the skin to cause lifelong damage.
The Dunedin Study has identified a fundamental developmental mechanism that completely rewrites the Nature versus Nurture argument. It's a genetic switch which is thrown by life events.
What determines our personality, health, wealth and happiness? In 1972 the Otago University Medical School embarked on the ultimate nature/nurture test, to study 1037 babies for their entire lives.