From Edward Lear's The Book of NonsenseGhrelin, A New Gastrointestinal Endocrine Peptide that Stimulates Insulin Secretion: Enteric Distribution, Ontogeny, Influence of Endocrine, and Dietary Manipulations -- Lee et al. 143 (1): 185 -- Endocrinology
One of the popular claims of the low-carb diet craze is that there is no hunger. For a long time people accepted that hunger was just a part of weight reduction--it turns out that it may only be a part of weight reduction that involves inadequate fat and protein.
Ghrelin, one of the hormones involved in regulation of appetite, is decreased by a high-fat diet, and increased in the presence of a low-protein diet. Furthermore, intravenous gherlin stimulates insulin secretion.
All of which supports the popular claim that low-carbohydrate eating actually suppresses your appetite. Or rather than suppressing it, it likely returns your appetite to its natural state.