Okay. You like the NIH when they say something that confirms your preconceived notions. How about when they say something with which you disagree?
Personally, I don’t trust the NIH at all.
Here is a recent example of some of the crap the NIH is funding:
https://grants.nih.gov/grants/guide/pa-files/PA-17-478.html
The NIH isn’t the only resource which confirms those findings....addiction centers and various other chemical addiction science attests to this. Try google and you;ll find plenty. Though all agree there is a difference between dependency and addiction and important to understand that difference.
Either way one looks at it.....Substance abuse of any kind starts with dependency in one form or another.