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  • So my wife and I are at a friends wedding.

  • We just finished dinner and a tub of

  • vanilla ice cream is opened up in the room

  • next door, it’s about 500 feet away.

  • I have no idea this is happening.

  • My wife on the other hand is completely

  • overwhelmed by the smell of vanilla.

  • In her words it’s assaulting her senses

  • and I also notice, she hasn't touched her champagne.

  • When she bolts to ladies room after feeling

  • nauseous on the dance floor,

  • it hits me we're going to have a baby.

  • We had a beautiful baby girl

  • a few months later.

  • but ever since the wedding I wanted to

  • find out more about why pregnant women

  • get this super human sense of smell.

  • And what causes those 2 a.m. pickle cravings?

  • How does mom's diet influence

  • the baby's favorite foods?

  • On this Mother's Day addition of Reactions,

  • well explain these and other amazing

  • science facts about pregnancy.

  • Well like many things in pregnancy,

  • the changes that a woman's, um, that

  • occurred to a woman senses really

  • are largely related to hormones.

  • During pregnancy are levels of estrogen

  • increase quite a bit and as levels of

  • estrogen change we may note different

  • aspects of our senses and certainly

  • smell and taste are, are big ones.

  • Probably two-thirds of pregnant women will

  • report that they're very sensitive to odors.

  • But when it comes to the science that

  • tries to investigate this, there's

  • not a lot about evidence for it.

  • What may be changing as that what's the lowest

  • concentration of an odor can detect from

  • maybe the change in how much you like the odor.

  • That, what was once pleasant now is unpleasant.

  • There are a lot of hypotheses.

  • Unfortunately, that's mostly what they are,

  • about how these cravings occur.

  • Leptin is secreted by our fat cells.

  • Leptin is known to decrease our appetite

  • and increase your metabolism.

  • We know that that leptin changes during pregnancy.

  • Neuropeptide Y is another substance

  • that's out there that's considered an

  • appetite stimulant and has been shown

  • to rise as pregnancy continues.

  • There is evidence that there may be

  • heightened bitter sense taste sensitivity,

  • especially during the first trimester.

  • There's a whole host of hypothesis is

  • why that maybe the case, and actually

  • that this heightened sensitivity

  • may be protecting the fetus.

  • Because it's - one of the results,

  • is mothers are eating bitter tasting foods

  • that could contain toxins.

  • Just like they're learning about your voice,

  • about the language you speak, they're also

  • learning about the foods that you eat.

  • It's a really beautiful and elegant system

  • that is common to all mammals, is that

  • the first way in which we learn about

  • foods are through these flavors

  • they get transmitted from the diet

  • via the bloodstream into the amniotic

  • fluid and then mothers milk.

  • The baby has a well-developed sensory

  • system that can detect these flavors.

  • The baby we'll be learning and there

  • is research showing that if you eat

  • these foods, your baby is at an

  • advantage when you first offer

  • those foods and will like them.

  • The whole like neural and hormonal

  • interactions for mother baby or

  • parent baby are really quite powerful.

  • We know that oxytocin is a chemical messenger,

  • it's released in the brain and it's released

  • in response to a social contact,

  • particularly skin-to-skin contact.

  • What it then does insights desire for further contact.

  • So it’s part of the reason that

  • we place a baby immediately on

  • mommy's belly or up near her chest,

  • we want that skin-to-skin contact to begin.

  • High estrogen in pregnancy causes

  • an increased throughout

  • the pregnancy of the number of

  • oxytocin receptors in mommy's brain.

  • And then as oxytocin starts to surge

  • in labor, so baby and mom here then

  • exposed to that oxytocin and it's

  • literally would be like trying to set

  • them up to start craving each other.

  • In some ways if you think too much

  • about how all of these things work,

  • very important for your doctor

  • to be thinking about it,

  • but as the person who is going through it,

  • sometimes it's to try to recognize these

  • are changes that happen, theyre natural,

  • theyre important.

  • They probably have a role,

  • they're doing something good,

  • but not to the point where we

  • would become so obsessed that

  • we miss the miracle here,

  • because really indeed,

  • it certainly is.

So my wife and I are at a friends wedding.

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關於懷孕的4個驚人的科學事實--反應 (4 Amazing Science Facts about Pregnancy - Reactions)

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    Eating 發佈於 2021 年 01 月 14 日
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