"hGH deficient" is the key term.
"hGH deficient" is just a fancy way of saying "over the hill" that kicks in around 30something. When one's body slows down hGH production the aging process kicks in.
IMHO - In the future, synthetic hGH will be fully embraced by the sporting and medical communities in controlled circumstances.
I take a synthetic HGH. You spray it under the tongue and it is sold over the counter.
I'm a competitive bodybuilder and have never used steroids... until they started making OTC supplements illegal.
So now I, who have never taken steroids, would fail a drug test.
Go figure.