Ghrelin's appetite effects are partly mediated through dopamine reward pathways, with peripheral ghrelin activating VTA dopamine neurons — connecting the hunger hormone to food reward and potentially addiction.
Key findingPeripheral ghrelin activates mesolimbic dopamine reward pathways (VTA → nucleus accumbens), linking the hunger hormone to food reward and hedonic eati
What the researchers found
Peripheral ghrelin activates mesolimbic dopamine reward pathways (VTA → nucleus accumbens), linking the hunger hormone to food reward and hedonic eating — a gut-brain-dopamine axis connecting appetite to pleasure and potentially to addictive eating behavior.
Why it matters
Relevant for neuropeptides, weight-loss, addiction.
How the study worked
review study.
What this study cannot tell us
See abstract.
How to read the evidence
moderate evidence.
When this study was published
Published in 2009.
The bigger picture
Advances peptide research.
Questions still open
- Further research needed.
- Clinical translation to evaluate.
Common questions
What was studied?
What was found?
Read the original research
Ghrelin and dopamine: new insights on the peripheral regulation of appetite.
Journal of neuroendocrinology, 21(9), 787-93
Citation
Abizaid, Alfonso. (2009). Ghrelin and dopamine: new insights on the peripheral regulation of appetite.. Journal of neuroendocrinology, 21(9), 787-93. https://doi.org/10.1111/j.1365-2826.2009.01896.x