The easiest link to the "Serotonin Story" (as well as the
"Beta-endorphin story," btw) is:

http://www.radiantrecovery.com

This is Kathleen DesMaisons' website. Click on to the bookstore, which
will take you to her recommended reading list, linked to Amazon.

Not on that list, but also recommended are: Naturally Slim and Powerful
by Philip Lipetz,PhD
Revolutionary Weight Control by Bob Arnot,MD