If we look at each dietary change as a therebo [a potential therapy that could also be a placebo], it is not surprising that so many foods give good results, at least for a while.

The Huffington Post reports [1], based on [2] and [3], that 10kg of eggplant has the same amount of nicotine as 1 cigarette.

References:

[1] http://www.huffingtonpost.com/2012/0...n_1597087.html

[2] http://www.nejm.org/doi/full/10.1056...93fd3cd0100cee

[3] http://www.nejm.org/doi/full/10.1056...99311183292118

John