Also a scientist studying (real) addiction and neuroscience, among other things. Yes, the title of that book is bull****. Low-carb may help some people manage their weight, but that’s for physiological reasons unrelated to addiction. If someone has perfectly effect insulin responses, carbs are probably not a big deal. For those of us who do not, carbs are likely to result in more variability in blood sugars, and those rises and (especially) drops may indeed increase subsequent diet. Has nothing to do with the types of processes underlying real physiological addiction though, that a nicotine patch addresses (i.e., withdrawal).
There’s a trend in neuroscience right now to do the following: show that X activates the nucleus accumbens/ventral striatum (aka “reward center” of the brain) and then proclaim X “addictive, just like using drugs!” While it’s true drugs activate those regions, so do loads of other neural processes unrelated to addiction—scientific reasoning around the brain just doesn’t work how pop psych coverage of these types of findings wants to pretend it does.