So after some reading (http://www.blackwell-synergy.com/doi...01-1-1150928.x) I learned that anavar causes levels of shbg to be depressed for a fairly long time after use. I tried to do a little research but all I could find was that low shbg was an indicator of diabetes. What exactly does shbg do and should I be concerned about low shbg levels caused by aas?