More on how the Atkins diet works, and the relationship with peptide YY
This article from aldoushuxley came from The Economist print edition and discusses how the peptide YY may play a role in the effectiveness of the Atkins diet. The article points out in its outset that the main reason Atkins works is due to appetite suppression and not ketosis, which I already knew from a medical journal article my wife, who is a doctor, gave me last year.
But this peptide YY thing sounds interesting. Apparently it's a hunger-regulating hormone that is released in higher concentrations after a meal high in protein, and the study quoted in the linked article appears to demonstrate that hunger is suppressed with the introduction of this peptide YY.