A non-hormonal, reversible and non-toxic male birth control could be a step closer, with scientists successfully targeting a protein that's crucial in making fertile sperm. Knocking this protein out for a period of time would give men control over their protection window, much like oral…
Periods going away or getting lighter is a side affect of hormonal IUDs. Copper IUDs have no mechanism to make them go away, and seem to pretty commonly make cramps and bleeding worse. .