I don't want to get shot by arrows, but regarding a previous subthread here about gerontology and demographics:

Growing Old the Hard Way: China, Russia, India
By Nicholas Eberstadt
Nicholas Eberstadt holds the Henry Wendt chair in political economy at the American Enterprise Institute. This essay extends and updates a study from the 2005/2006 edition of the World Economic Forum's Global Competitiveness Report. [Hoover Institution]

"Over the past decade and a half, the phenomenon of population aging in the 'traditional' or already affluent oecd societies has become a topic of sustained policy analysis and concern.1 The reasons for this growing attention — and apprehension — are clear enough."

"By such metrics as median age or proportion of total population above the age of 65, virtually every developed society today is more elderly than practically any human society ever surveyed before the year 1950 — and every single currently developed society is slated to experience considerable further population aging in the decades immediately ahead. In all of the affluent oecd societies, the proportion of what is customarily called the 'retirement age population' (65 years of age or older) will steadily swell, with the most rapid expansion occurring among those aged 80 or more. Simultaneously, the ratio of people of 'working age' (the cohort, by arbitrary though not entirely unreasonable custom, designated at 15–64 years) to those of retirement age will relentlessly shrink — and within the working age grouping, more youthful adults will account for a steadily dwindling share of overall manpower."

"Whether these impending revolutionary transformations of national population structure actually constitute a crisis for the economies and societies in the industrialized world is — let us emphasize — still a matter of dispute...."