A good point is that the ratio of AMWA members is greater on the female side (see the article here). This is a similar trend I've seen in some other writers associations I'm part of. So, are there really more women medical writers or are women simply more likely to join a professional association?
I don't know and I think it doesn't really matter. If they can write, have the passion and time to do it, then they should just do it. Men too. What do you think?