Thanks, I will look there on youtube. I was just getting off the computer and I saw this post…Personal Experience with HCG Induced Leydig Cell Desensitization - #20 by nibble . Two people here are saying they Leydig cells got desensitized to hcg. The first person had lots of other factors involved, but " nibble" said his was shut down for months and at first he didnt seem like he thought it was permanent… So apparently its not so simple as “stop taking it and everything goes back to normal” . I guess they were taking larger doses than someone just taking it like I would though.