Gina,
Sorry, but I just have to ask this: why is it your responsibility to gather information to help your 45-yr. old mother? Can't she take care of herself? If she doesn't exercise, eat right or take care of herself, that's her problem. Let her go on the internet and find suggestions for dealing with hot flashes. Sounds like you've had a reversal of the parent/child relationship here and, trust me, it's not going to do either one of you any good.
I know I sound critical and hearing this may make you angry, but it really is meant to help.
-Nancy