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Ghrelin has been dubbed the “hunger hormone” because in previous studies people given the hormone became so ravenous, they ate markedly more than their usual food intake.
Ghrelin may act on your brain’s “pleasure centers,” driving you to reach for another slice of cheesecake simply because you remember how good the first one tasted and made you feel (at least in that moment). In short, one of the forces driving you to eat (and overeat a second helping or an extra dessert even though you’re full) is, without a doubt, ghrelin.
What influences levels of this hormone in your body is another matter entirely — a rather complex one at that. One of the most intriguing findings to date, however, is the power of your mind to fool your stomach in a sense, resulting in dramatic declines in ghrelin even in the absence of an indulgent meal.