[preciousjeni]

Maybe the better question (as suggested by honeychile) is what does elderly mean?

When I think of elderly, I think of a person who has decreased mobility, trouble eating, etc. It's someone who kinda needs some assistance with tasks that would have been easy earlier in the person's life.

So, with the way we're pampered in the west, I don't see people's abilities faltering en masse until the 80s. Of course there are always exceptions. But, overall...