This may seem like a strange answer to your question.
I take GABA (gamma-animobutyric acid). It is a precursor for serotonin. Serotonin is a natural neurotransmittor in the brain that is used by the brain in times of strees to calm itself.
...is an interest look at using the precurors (amino acids) to manipulate the neurotransmittors of the brain in order to affect mood and cravings.
There are several short surveys at the beginning for you to determine what your deficiency (-ies) are and then you can take the appropriate amino acid to get the results you need.
Example, for me, I needed to ameliorate depression. GABA is the precursor for serotonin that effects mood. So I tried taking GABA tablets. OMFG! WHAT A DIFFERENCE! Even the anti-depressants that the doc gave me didnt do this! Actually, it was the combination of anti-depressants and GABA that made me feel total human again.
Well, depression is an extreme case of the brain under stress. I have also used it for just feeling stressed in the afternoon during work. Within 20 minutes or so, I feel calm...and it's just the working of the brain's natural neurotranmittor which makes me feel good about taking it...no artificial chemical sloshing around in the brain.
The reason the book is called The Diet Cure is because the author is presenting this technique as a method to suppress eating craving so one doesnt feel the desire to eat...hence dieting is not necessary...hence the dieting is cured