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  • Who among us has not had this moment,

  • that kind of intimate tete-a-tete with the nutritional label,

  • trying to discern are you good or are you bad.

  • But here's the thing you probably haven't considered.

  • "Labels are not just labels. They evoke a set of beliefs."

  • That's Alia Crum. (Psychologist at Columbia University)

  • See Crum has spent years studying the "placebo effect,"

  • and she figured that food labels might work the same way and so to test her idea,

  • Crum created a huge batch of milkshakes,

  • and then labeled it in two very different ways.

  • Then, as people drank the milkshakes,

  • she had nurses monitor their levels of this hormone called "ghrelin."

  • People in the medical field call it the "hunger hormone."

  • Physically, when you have not eaten anything,

  • ghrelin levels in the stomach rise which signals to the brain that "it is time now to seek out food."

  • (food seeking)

  • But after that rise, say you have a big meal,

  • ghrelin levels are gonna drop a lot, and when that does, it signals to the mind:

  • "You've had enough here, you know, and I'm gonna start revving up the metabolisms, we can burn the calories that we had just ingested."

  • But Crum discovered that those who believed they were drinking the "indulgent shake", responded as if their bodies had eaten three times more.

  • So what people believed about their milkshake came true.

  • If they thought it was fattening, they felt they've eaten more, and their digestion was affected.

  • Their ghrelin levels dropped three times more.

  • So to summarize, you may be able to change your metabolism with your mind.

  • So in theory, if you wanna lose weight, you can try eating healthy food with an indulgent mindset.

  • You feel fuller and your metabolism would increase.

  • And if diet products actually wanted to help you lose weight, they advertises "fattening" not "fat-free."

  • We have this very simple metabolic science: calories in calories out,

  • and I don'... I think that we haven't given enough credits to the role of our beliefs in determining our physiology, our reality.

Who among us has not had this moment,

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