Abietite n. : A substance resembling mannite, found in the needles of the common silver fir of Europe (Abies pectinata).

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Taxonomy
appetite, appetite regulation, hypothalamus, free encyclopedia, excessive appetite, Poor appetite, mechanisms, desire, hunger, energy intake, the brain, Dysregulation, hormones, hypothalamic, obesity, mental disorders, Bloom, hyperphagia.

Defination from the web:
Appetite exists in all higher life-forms, and serves to regulate adequate energy intake to maintain metabolic needs. ... The neurons that regulate appetite appear to be mainly serotonergic, although neuropeptide Y (NPY) and Agouti-related peptide (AGRP) also play a vital role. ...