Golden Cohort effect
\ˈgoʊldən\ \ˈkoʊhɔrt\ \ɪˈfɛkt\
The effect that UK retirees born around 1926 live longer lives than those born earlier or (immediately) later.
Possible reasons include reductions in smoking, NHS and welfare reform, improvements in medical treatment and the effect of World War II on those who survived. Each of these factors may have had a greater impact on retirees born around 1926 (the ‘golden cohort’) than those born earlier or later.