Read today it was a human growth substance he used, human and Terry Newton in the same sentence seems odd
The report also says it is called HGH, which apparently stays in the body only for a short while so it makes me wonder if he used it previously. If as he says he hopes others learn from his mistakes then something good can come out of it.
The fact he knew what he was doing means this was not a mistake but deliberate, I hope he says when he started taking it.