Answered By: Dr. Jason Schiffman

Answer: There have been some reports that amphetamine use may increase the length of your period and increase the amount of cramping, but there is disagreement about this effect. However, your body will stop your period if your body fat decreases below a certain point. Because methamphetamine abuse often causes significant weight loss, it is possible that it will indirectly cause your period to stop.

Answered on: November 14, 2008