you would have to run long acting slin and keep it active in your system long enough to keep youyr own production shut down long enough make you dependant. thats why i said it is extremely unlikely most become dependant because they dont even keep there production shut down for more than 12 hours but let alone months at a time. im guessing the pros that became dependant were running humalin n twice a day and log post workout or a similar program where there was exogenous slin in there system through out the day keeping them shut down for long periods. and they also probubly had diabetes in there family. the reason there is no medical proof is no one is going to do a study on human atheletes using slin in these dosages knowing that they could become dependant. why would bk lie? like she said some pros are becoming dependant, why wouldnt you believe her? how are you taking that 60 iu's, what type and how are you cycling it?