He might have asked his girlfriend to try it out.

Or maybe he just talked to some women or doctors? He could have also asked women to use it and compare it to their experience...all of these seem like feasible options.

Erm . . . I'm sure he or she is aware of the difference. Acutelyaware is just saying that we probably shouldn't turn off natural processes, as has already been done with anti-perspirants, and has also been done where some birth control pills eliminate periods. Don't mess with nature too much . . .

YES! This! Today I had cramps that were so bad that I almost threw up and then had to hide in our conference room, put my feet up and use my laptop as a heating pad.