Just to put this in perspective, the total sales of adult diapers in Japan is about to exceed that of baby diapers.

More stats about Japan's aging population here. As a footnote to my recent post on the underpopulation bomb, the article mentions a real life scenario that mirrors the fictional one from the anime film Roujin Z: to deal with the boom in Japan's elderly, the Health Ministry is recommending increased use of robots as nurses.