You're probably right. It seems like there's not a hard line between behavior and chemical addiction, because of how the chemicals create reward signals to reinforce certain behavior.
From the article:
> Basic science models show that liquid sugar concentrations around 10% by weight—comparable with Coca-Cola, Pepsi, and Mountain Dew—can reliably trigger addictive behaviors in animals, including bingelike consumption, withdrawal, and dopamine system alterations.
But yeah, it's obviously nothing close to a nicotine.
From the article:
> Basic science models show that liquid sugar concentrations around 10% by weight—comparable with Coca-Cola, Pepsi, and Mountain Dew—can reliably trigger addictive behaviors in animals, including bingelike consumption, withdrawal, and dopamine system alterations.
But yeah, it's obviously nothing close to a nicotine.