WEBVTT

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Here's an intriguing fact.

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In the developed world,

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everywhere, women live an average
of six to eight years longer than men do.

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Six to eight years longer.

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That's, like, a huge gap.

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In 2015, the Lancet published an article

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showing that men in rich countries

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are twice as likely to die as women are

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at any age.

NOTE Paragraph

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But there is one place in the world

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where men live as long as women.

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It's a remote, mountainous zone,

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a blue zone,

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where super longevity

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is common to both sexes.

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This is the blue zone in Sardinia,

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an Italian island in the Mediterranean,

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between Corsica and Tunisia,

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where there are six times
as many centenarians

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as on the Italian mainland,

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less than 200 miles away.

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There are 10 times as many centenarians

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as there are in North America.

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It's the only place where men
live as long as women.

NOTE Paragraph

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But why?

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My curiosity was piqued.

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I decided to research the science
and the habits of the place,

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and I started with the genetic profile.

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I discovered soon enough

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that genes account for just
25 percent of their longevity.

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The other 75 percent is lifestyle.

NOTE Paragraph

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So what does it take to live
to 100 or beyond?

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What are they doing right?

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What you're looking at
is an aerial view of Villagrande.

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It's a village at the epicenter
of the blue zone

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where I went to investigate this,

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and as you can see, architectural beauty

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is not its main virtue,

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density is:

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tightly spaced houses,

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interwoven alleys and streets.

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It means that the villagers' lives
constantly intersect.

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And as I walked through the village,

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I could feel hundreds
of pairs of eyes watching me

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from behind doorways and curtains,

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from behind shutters.

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Because like all ancient villages,

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Villagrande couldn't have survived

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without this structure,
without its walls, without its cathedral,

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without its village square,

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because defense and social cohesion
defined its design.

NOTE Paragraph

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Urban priorities changed as we moved
towards the Industrial Revolution

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because infectious disease
became the risk of the day.

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But what about now?

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Now, social isolation

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is the public health risk of our time.

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Now, a third of the population says

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they have two or fewer
people to lean on.

NOTE Paragraph

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But let's go to Villagrande
now as a contrast

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to meet some centenarians.

NOTE Paragraph

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Meet Giussepe Marino. He's 102,
a supercentenerian

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and a lifelong restaurant
of the village of Villagrande.

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He was a gregarious man.

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He loved to recount stories

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such as how he lived like a bird
from what he could find

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on the forest floor

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during not but two world wars,

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how he and his wife,
who also lived past 100,

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raised six children
in his small, homey kitchen

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where I interviewed him.

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Here he is with his sons
Angelo and Domenico,

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both in their 70s and looking
after their father,

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and who were quite frankly

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very suspicious of me and my daughter

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who came along with me
on this research trip,

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because the flip side of social cohesion

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is a wariness of strangers and outsiders.

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But Giuseppe, he wasn't suspicious at all.

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He was a happy-go-lucky guy,

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very outgoing with a positive outlook.

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And I wondered: so is that what it takes

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to live to be 100 or beyond,

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thinking positively?

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Actually, no.

NOTE Paragraph

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(Laughter)

NOTE Paragraph

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Meet Giovanni Coreas. He's 101,

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the grumpiest person I have ever met,

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and he put a lie to the notion
that you have to be positive

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to live a long life.

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And there is evidence for this.

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When I asked him why he lived so long,

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he kind of looked at me
under hooded eyelids, and he growled,

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"Nobody has to know my secrets."

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(Laughter)

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But despite being a sourpuss,

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the niece who lived with him
and looked after him called him

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"Il Tesoro," "my treasure."

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And she respected him and loved him,

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and she told me, when I questioned

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this obvious loss of her freedom,

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"You just don't understand, do you.

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Looking after this man is a pleasure.

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It's a huge privilege for me.

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This is my heritage."

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And indeed, wherever I went
to interview these centenarians,

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I found a kitchen party.

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Here's Giovanni with his two nieces,
Maria above him

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and beside him his great-niece Sara,

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who came when I was there
to bring fresh fruits and vegetables.

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And I quickly discovered by being there

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that in the blue zone, as people age,

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and indeed across their lifespans,

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they're always surrounded

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by extended family, by friends,
by neighbors, the priest,

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the barkeeper, the grocer.

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People are always there or dropping by.

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They are never left
to live solitary lives.

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This is unlike the rest
of the developed world,

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where as George Burns quipped,
"Happiness is having a large,

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loving, caring family

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in another city."

NOTE Paragraph

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(Laughter)

NOTE Paragraph

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Now, so far we've only met men,

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long-living men, but I met women too,

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and here you see Tzia Teresa.

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She, at over 100, taught me how
to make the local specialty,

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which is called [[?]],

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which are these large pasta pockets

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like ravioli about this size,

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this size,

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and they're filled with high-fat
ricotta and mint

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and drenched in tomato sauce.

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And she showed me how to make
just the right crimp

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so they wouldn't open,

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and she makes them with her daughters

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every Sunday and distributes them

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by the dozens to neighbors and friends.

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And that's when I discovered
a low-fat, gluten-free diet

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is not what it takes to live
to 100 in the blue zone.

NOTE Paragraph

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(Applause)

NOTE Paragraph

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Now, these centenarians' stories
along with the science that underpins them

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prompted me to ask myself
some questions too,

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such as, when am I going to die

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and how can I put that day off?

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And as you will see,

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the answer is not what we expect.

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Julianne Holt-Lunstad is a researcher
at Brigham Young University

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and she addressed this very question

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in a series of studies

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of tens of thousands
of middle aged people

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much like this audience here.

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And she looked at every
aspect of their lifestyle:

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their diet, their exercise,

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their marital status,

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how often they went to the doctor,

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whether they smoked or drank, etc.

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She recorded all of this,

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and then she and her colleagues
sat tight and waited for seven years

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to see who would still be breathing.

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And of the people left standing,

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what reduced their chances
of dying the most?

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That was her question.

NOTE Paragraph

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So let's now look at her data

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in summary, going from
the least powerful predictor

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to the strongest. Okay?

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So clean air, which is great,

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it doesn't predict how long you will live.

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Whether you had your hypertension treated

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is good.

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Still not a strong predictor.

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Whether you're lean or overweight,
you can stop feeling guilty about this,

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because it's only in third place.

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How much exercise you get is next,

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still only a moderate predictor.

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Whether you've had a cardiac event
and you're in rehab and exercising,

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getting higher now.

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Whether you've had a flu vaccine.

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Did anybody here know
that having a flu vaccine

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protects you more than doing exercise?

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Whether you were drinking and quit,

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or whether you're a moderate drinker,

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whether you don't smoke,
or if you did, whether you quit,

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and getting towards the top predictors

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are two features of your social life.

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First, your close relationships.

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These are the people that you
can call on for a loan

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if you need money suddenly,

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who will call the doctor
if you're not feeling well

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or who will take you to the hospital,

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or who will sit with you

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if you're having an existential crisis,

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if you're in despair.

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Those people, that little clutch of people

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are a strong predictor if you have them
of how long you'll live.

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And then something that surprised me,

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something that's called
social integration.

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This means how much

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you interact with people
as you move through your day.

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How many people do you talk to?

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And these mean both your weak
and your strong bonds,

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so not just the people
you're really close to,

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who mean a lot to you,

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but, like, do you talk to the guy

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who every day makes you your coffee?

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Do you talk to the postman?

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Do you talk to the woman who walks
by your house every day with her dog?

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Do you play bridge or poker,
have a book club?

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Those interactions are one
of the strongest predictors

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of how long you'll live.

NOTE Paragraph

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Now this leads me to the next question:

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if we now spend more time

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online than on any other activity,

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including sleeping,

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we're now up to 11 hours a day,

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one hour more than last year, by the way,

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does it make a difference?

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Why distinguish between
interacting in person

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and interacting via social media?

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Is it the same thing as being there

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if you're in contact constantly
with your kids through text, for example?

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Well, the short answer
to the question is no,

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it's not the same thing.

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Face-to-face contact releases
a whole cascade of neurotransmitters,

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and like a vaccine, they protect you
now in the present

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and well into the future.

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So simply making
eye contact with somebody,

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shaking hands, giving somebody a high-five

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is enough to release oxytocin,

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which increases your level of trust

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and it lowers your cortisol levels.

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So it lowers your stress.

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And dopamine is generated,
which gives us a little high

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and it kills pain.

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It's like a naturally produced morphine.

NOTE Paragraph

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Now all of this passes
under our conscious radar,

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which is why we conflate
online activity with the real thing.

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But we do have evidence now, fresh
evidence, that there is a difference.

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So let's look at some of the neuroscience.

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Elizabeth Redcay, a neuroscientist
at the University of Maryland,

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tried to map the difference

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between what goes on in our brains

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when we interact in person

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versus when we're watching
something that's static.

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And what she did was she
compared the brain function

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of two groups of people,

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those interacting live with her

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or with one of her research associates

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in a dynamic conversation,

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and she compared that
to the brain activity of people

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who were watching her talk about

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the same subject but in a canned video,

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like on YouTube.

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And by the way, if you want to know
how she fit two people

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in an MRI scanner at the same time,

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talk to me later.

NOTE Paragraph

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So what's the difference?

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This is your brain
on real social interaction.

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What you're seeing is the difference

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in brain activity between
interacting in person

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and taking in static content.

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In orange, you see the brain areas

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that are associated with attention,

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social intelligence --

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that means anticipating what
somebody else is thinking

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and feeling and planning --

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and emotional reward.

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And these areas become much more engaged

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when we're interacting
with a live partner.

NOTE Paragraph

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Now, these richer brain signatures

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might be why recruiters
from Fortune 500 companies

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evaluating candidates

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thought that the candidates were smarter

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when they heard their voices

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compared to when they just
read their pitches in a text, for example,

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or an email or a letter.

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Now, our voices and body language
convey a rich signal.

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It shows that we're thinking, feeling,

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sentient human beings

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who are much more than an algorithm.

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Now, this research by Nicholas Epley at
the University of Chicago Business School

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is quite amazing because
it tells us a simple thing.

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If somebody hears your voice,

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they think you're smarter.

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I mean, that's quite a simple thing.

NOTE Paragraph

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Now to return to the beginning,

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why do women live longer than men?

00:12:40.467 --> 00:12:43.550
And one major reason is that women
are more likely to prioritize

00:12:43.550 --> 00:12:45.862
and groom their face-to-face relationships

00:12:45.862 --> 00:12:48.014
over their lifespans.

00:12:48.014 --> 00:12:50.064
Fresh evidence shows

00:12:50.064 --> 00:12:51.365
that these in-person friendships

00:12:51.365 --> 00:12:55.131
create a biological force field
against disease and decline.

00:12:55.131 --> 00:12:57.974
And it's not just true of humans

00:12:57.974 --> 00:13:00.575
but their primate relations,
our primate relations as well.

00:13:00.575 --> 00:13:04.057
Anthropologist Joan Silswork
shows that female baboons

00:13:04.057 --> 00:13:07.239
who have a core of female friends

00:13:07.239 --> 00:13:10.556
show lower levels of stress
via their cortisol levels,

00:13:10.556 --> 00:13:14.939
they live longer and they have
more surviving offspring.

00:13:14.939 --> 00:13:18.772
At least three stable relationships.
That was the the magic number.

00:13:18.772 --> 00:13:20.056
Think about it.

00:13:20.056 --> 00:13:22.688
I hope you guys have three.

NOTE Paragraph

00:13:22.688 --> 00:13:26.055
The power of such face-to-face contact

00:13:26.055 --> 00:13:30.755
is really why they're the lowest
rates of dementia among people

00:13:30.755 --> 00:13:32.553
who are socially engaged.

00:13:32.553 --> 00:13:34.338
It's why women who have breast cancer

00:13:34.338 --> 00:13:38.153
are four times more likely
to survive their disease

00:13:38.153 --> 00:13:39.621
than loners are,

00:13:39.621 --> 00:13:43.602
why men who've had a stroke
who meet regularly to play poker

00:13:43.602 --> 00:13:45.733
or to have coffee

00:13:45.733 --> 00:13:47.792
or to play old-timer's hockey --

00:13:47.792 --> 00:13:50.037
I'm Canadian, after all --

00:13:50.037 --> 00:13:52.902
are better protected
by that social contact

00:13:52.902 --> 00:13:54.618
than they are by medication,

00:13:54.618 --> 00:13:57.751
why men who've had a stroke
who meet regularly,

00:13:57.751 --> 00:14:00.206
this is something very
powerful they can do.

00:14:00.206 --> 00:14:03.590
This face-to-face contact
provides stunning benefits,

00:14:03.590 --> 00:14:06.501
yet now almost a quarter of the population

00:14:06.501 --> 00:14:09.618
says they have no one to talk to.

NOTE Paragraph

00:14:09.618 --> 00:14:11.484
We can do something about this.

00:14:11.484 --> 00:14:13.463
Like Sardinian villagers,

00:14:13.463 --> 00:14:16.902
it's a biological imperative
to know we belong,

00:14:16.902 --> 00:14:19.384
and not just the women among us.

00:14:19.384 --> 00:14:23.566
Building in-person interaction
into our cities, into our workplaces,

00:14:23.566 --> 00:14:25.985
into our agendas

00:14:25.985 --> 00:14:29.129
bolsters the immune system,
sends feel-good hormones

00:14:29.129 --> 00:14:31.498
surging through the bloodstream and brain,

00:14:31.498 --> 00:14:34.193
and helps us live longer.

00:14:34.193 --> 00:14:36.830
I call this building your village,

00:14:36.830 --> 00:14:39.209
and building it and sustaining it

00:14:39.209 --> 00:14:41.181
is a matter of life and death.

NOTE Paragraph

00:14:41.181 --> 00:14:43.907
Thank you.

NOTE Paragraph

00:14:43.907 --> 00:14:48.633
(Applause)

NOTE Paragraph

00:14:48.633 --> 00:14:50.604
Moderator: Susan, come back.
I have a question for you.

00:14:50.604 --> 00:14:52.180
I'm wondering if there's a middle path.

00:14:52.180 --> 00:14:53.930
So you talk about the neurotransmitters

00:14:53.930 --> 00:14:56.345
connecting when in face-to-face,

00:14:56.345 --> 00:14:58.037
but what about digital technology?

00:14:58.037 --> 00:15:00.929
We've seen enormous improvements
in digital technology

00:15:00.929 --> 00:15:03.263
like FaceTime, things like that.

00:15:03.263 --> 00:15:05.633
Does that work too?

00:15:05.633 --> 00:15:06.569
I mean, I see my nephew.

00:15:06.569 --> 00:15:07.833
He plays Minecraft, and he's
yelling at his friends.

00:15:07.833 --> 00:15:09.376
It seems like he's connecting pretty well.

00:15:09.376 --> 00:15:12.230
Is that useful? Is that helpful?

NOTE Paragraph

00:15:12.230 --> 00:15:13.914
Susan Pinker: You know, some
of the data are just emerging.

00:15:13.914 --> 00:15:15.313
The data are so fresh

00:15:15.313 --> 00:15:17.319
that the digital revolution happened

00:15:17.319 --> 00:15:20.277
and the health data trailed behind.

00:15:20.277 --> 00:15:21.911
So we're just learning,

00:15:21.911 --> 00:15:23.385
but I would say
there are some improvements

00:15:23.385 --> 00:15:24.877
that we could make in the technology.

00:15:24.877 --> 00:15:28.970
For example, the camera on your laptop
is at the top of the screen,

00:15:28.970 --> 00:15:32.162
so for example, when you're
looking into the screen,

00:15:32.162 --> 00:15:33.730
you're not actually making eye contact.

00:15:33.730 --> 00:15:36.793
So something as simple as even
just looking into the camera

00:15:36.793 --> 00:15:39.325
can increase those neurotransmitters,

00:15:39.325 --> 00:15:41.975
or maybe changing
the position of the camera.

00:15:41.975 --> 00:15:44.941
So it's not identical, but I think
we are getting closer

00:15:44.941 --> 00:15:45.847
with the technology.

NOTE Paragraph

00:15:45.847 --> 00:15:47.792
Moderator: Great. Thank you so much.
SP: Thank you.

NOTE Paragraph

00:15:47.792 --> 00:15:49.534
Moderator: Thanks.
(Applause)