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1 Ghrelin is secreted by endocrine cells in the stomach, especially when one is hungry and. 2  acts on the hypothalamus to stimulate feeding. 3  This action counteracts the inhibition of feeding by leptin and PYY3-36. Ghrelin is secreted by endocrine cells in the stomach, especially when one is hungry and. 2  acts on the hypothalamus to stimulate feeding. 3  This action counteracts the inhibition of feeding by leptin and PYY3-36.
These hormones exert short term and long term effects and are vital to control the body weight. The following hormones regulate appetite and hunger in the body: Ghrelin: Ghrelin is a peptide-hormone secreted by the stomach that stimulates the appetite by activating the NPY/AgRP neurons of the appetite center.The hormone is secreted from an empty stomach and release of the hormone stops following food intake.hese hormones exert short term and long term effects and are vital to control the body weight. The following hormones regulate appetite and hunger in the body: Ghrelin: Ghrelin is a peptide-hormone secreted by the stomach that stimulates the appetite by activating the NPY/AgRP neurons of the appetite center.