Answers

2014-08-31T12:26:50+05:30
Hunger contractions start to occur in the stomach due to hunger generating signals that reach the brain from the stomach due to secretion of the harmone (ghrelin),hunger pangs continue up to 30-45 min.Increase in ghrelin levels result in sensation of hunger and motivation to consume food
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2014-08-31T16:15:16+05:30
A major cause for feeling hungry lies in the psychology of the blood circulation.levels of different substances are generally maintained in the blood mainly by our digestive system.when the levels in the blood falls we get hunger pangs in our stomach.
hunger contraction start to occur in the stomach due to hunger generating signals that reach brain from stomach due to the secretion of ghrelin harmone.these hunger pangs remain upto 30 to 45 minutes.
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