Oldest woman alive?

Read an article in the paper today in which a doctor said having a baby added 10 years to a woman.

Now, while I don't deny that it is an unbelievable hardship to give birth, surely it couldn't be that hard on the female body? If so, my granny must surely be one of the oldest people alive. At 95 and having had (and not having had had any, Mrs Stalker!) 15 children, that gives her an effective age of 245!

Outside of the Old Testament, that's impressive!