I saw a show on the BBC recently about aging in the UK. There were several very interesting aspects to the story. First, the population in nursing homes has changed dramatically in the past 20 years: previously, most residents were in their 70s and today most are in their 90s. And most are women—not surprising given World War II and life expectancy trends.

The consensus of experts here is that a combination of healthier habits and lifestyles, better medical technologies, and increasing access