Like quite a few people I know, I had my first child in my late thirties–39 to be exact. My maternal grandmother had a child at 39, too, but that girl was her eighth baby and her last.

This difference summed up for me the change that had occurred in two generations, when I started writing a book about the new later motherhood–its causes and effects, personal and social. Where 1 in 12 first babies these days is born to a mom 35 or over, it was 1 in 100 in 1970. Add in the adoptive moms, and you’ve got a big group. […]