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
crumb C crumb had spent years studying
the placebo effect and she figured that
food labels might work the same way and
so to test her idea crumb 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 basically when you have not
eaten anything gorillas in levels in the
stomach rise which signals to the brain
that it is time now to seek out food
[Music]
I like
[Music]
but after that rise so you have a big
meal ghrelin levels are gonna drop a lot
and what that does is it signals to the
mind you've had enough here you know and
I'm gonna start red revving up the
metabolism so we can burn the calories
that were just ingested but Crum
discovered that those who believed they
were drinking the indulgences shake
responded as if their bodies had eaten
three times more so what people believed
about their milk shake came true if they
thought it was fattening they felt
they'd eaten more and their digestion
was affected their gorillas and levels
dropped three times more so to summarize
you may be able to change your
metabolism with your mind so in theory
if you want to lose weight you could try
eating healthy food with an indulgent
mindset you'd feel fuller and your
metabolism would increase and if diet
products actually wanted to help you
lose weight
they'd advertise as fattening not
fat-free we have this very simple
metabolic science calories in calories
out and I don't I think that we haven't
given enough credit to the role of our
beliefs in determining our physiology or
reality
[Music]
you
[Music]
you