You mention babies born to "Rachel Weisz at 48 and Laura Linney at 49." There are plenty of women who naturally give birth at 40, such as yourself and my own mother, but it is extremely rare for anyone to give birth at 48 or 49 without frozen or donor eggs or IVF. Hollywood has to stop propagating this myth that 51 year old Janet Jackson, as well as Weisz and Linney, etc. just happened to get pregnant. Women need to be informed that is very very rare to give birth naturally after the age of 45. It doesn't matter how old or young anyone looks, reproductive parts don't lie.