By the middle of this century, fully a third of China's population will be age 60 or older, compared with 26% in the United States.
China's projected 438 million senior citizens will outnumber the entire U.S. population.
With fewer workers to support an aging society in need of care, China faces the same demographic squeeze confronting Western nations.
The difference: China's family-tinkering policy has accelerated a shift that the country is ill-prepared to manage and finance.