Crank which is Amphetamine is mentally addicting but Methamphetamine is physically addicting just like herion and the Legal implications are the same. Problem is most people can't stop using either once they start. Addiction is Addiction.
I started noticing a big change in my taste for different foods in as little as 6 or 7 days. Thought it might be something else so worked back to find it was the HGH. Are you just using HGH?