There have been studies that suggest that cannabis might have a negative influence on male fertility.

This may probably be an old wives' tale, but have you come across any research or mention on cannabis use having a hand in the gender of children from a user?

I've seen several guys say if you use cannabis a lot that there is the high tendency that your children (if you have any) would be female.

As a student of science I do not believe things unless proven somehow. Ever heard such?

I'm glad you cleared the air on cannabis being "harmless". I had always known that it is not.