I wonder how geographically broad their menopause survey was? Does this mean that women born the Southern hemisphere reach menopause earlier the other way around? (As they watch the water spiral down the drain the other way around)*
Also, what about women born close to the equator? Do they all reach menopause at the same time, and is 48, 50 or 49 as the average of both?
*Yes, I know this doesn't really happen.