Anyone familiar with the chemical in our bodies that triggers hunger.

I am pre-op and heard an interesting "factoid" at the pre-op informational meeting my dr. gave. He stated that there was a chemical that our bodies produced that triggers hunger. The level increases as you move towards a meal, peaks at meal time and then significantly drops after you eat. He also stated that this chemical no longer rises and falls after WLS and that it is steady at a much lower level than the "after meal" level pre-op. He said the name of the chemical was ghitlin or ghitin or something very similar to that (I did not spell it very clearly in my notes). I had never heard about that chemical before so I was off to the Web to learn more about. I cannot find any reference to it even with 4 different spelling variation. Anyone heard about this or know where to get additional information about it. It is not that I don't trust my dr but I like to double check info I am given. Any heal is greatly appreciated. ~~Hugs~~

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