Rag Week

Has anybody noticed how in CSI and the Mentalist, and programs such as these that appear regularly on channel five, none of the female victims are on their period?

Now you can tell these programs are meant for women because half the adverts in the one hour show are for tampax and other such sanitary items but none of the victims, or other characters for that matter, appear to ever need them. Obviously you get copious amounts of unborn babies which I guess could explain this phenomenon but I have two other explanations:

1) When America was saved from the Blob they were a bit too thorough

or

2) There are just no fully functioning women in America.