Ghrelin Activates Orexigenic NPY Neurons in the Arcuate Nucleus
Ghrelin, the hunger peptide hormone, exerts its appetite-stimulating effects by activating orexigenic neuropeptide Y (NPY) neurons located in the arcuate nucleus of the hypothalamus. This represents the mechanistic pathway through which ghrelin drives hunger signaling centrally. No dosages, study citations, or specific evidence sources are provided in the transcript.
Ketone Esters Reduce Ghrelin (Hunger Hormone) Levels
Ketone esters have been shown to reduce circulating levels of ghrelin, the primary hunger-signaling peptide hormone. By suppressing ghrelin, ketones may blunt appetite drive. No specific dosage, study citation, or evidence tier is explicitly stated by the speaker — the claim is presented as established fact without referencing a specific trial or study design.