my friend is going to the doctors soon, but I couldnt wait to know some more info.. over the past 6 months she has been getting into great shape. was already in pretty good shape but changed her diet plan etc...she is now 9.2% bf according to the hydrostatic she had done a few days ago..question is- she has not gotten her menstrual cycle for two almost three months now. No! she is not pregnant...can body fat % effect this??? thanks all