I was speaking to my aunt yesterday about having babies late in life. She had her last baby at 44. Her mother (my grandmother) had her last at 44 too. My mother had her last at 39 and her mother at 44. I had my last (I assume it is my last) at 41.
My aunt said (in that way that women of a certain age talk - with such certainty) that having a baby late in life gives you a real hormonal boost that lasts even having an impact on the menopause. My two grandmothers lived to an old age the oldest being 98 so maybe there is something in this old wives tale. I thought it was interesting to talk to someone from a different generation where having lots of kids and as a consequence you could well be quite old having the last. I wondered if there was any research to back this up.