Again, what do you think it is? I don't see anything it could be besides what was written. You could call it endocrine imbalance or disrupted hormone household if you wanted to be less precise and skirt around the actual biological problem, but it still doesn't change anything.
I don't know what it is, thats why I asked. Is the assertion that you're trying to make that drugs and gambling being addictive is a result of hormone imbalance in the addicts, rather than the addictive nature of those things?