Something You Should Know - How to Master Charisma & The Marvel of Modern Genetics - SYSK Choice
Episode Date: March 2, 2024A person’s first name can have a profound impact on their life. This episode begins as I describe how people instantly get preconceived ideas about you based solely on your name – some good ideas ...and some not so good. It seems your name can shape who you are for the rest of your life. https://www.theifod.com/how-does-your-name-shape-who-you-are/ Some people can just walk into a room and exude charisma. I am sure you have seen it happen. People are attracted to charismatic people. But it is sometimes hard to figure exactly what makes someone charismatic. Listen as my guest Vanessa Van Edwards, reveals the ingredients of charisma and explains how anyone can express more of that quality that people find so attractive. Vanessa is founder and lead investigator at Science of People (https://www.scienceofpeople.com), she is a sought after speaker and author of the book Cues: Master the Secret Language of Charismatic Communication (https://amzn.to/3vFoLZ0). What science has discovered about genetics and DNA in just the last few decades is amazing. Remember it wasn’t all that long ago when we started using fingerprints as a crime solving tool. Today DNA evidence is helping to solve decades-old cold case crimes with incredible accuracy. Plus, we now know so much about our genetics and how it all relates to our health. Joining me to discuss this is Dr. Joshua Rappoport. Joshua is a cellular biology expert who teaches at Boston College and is author of the book Mapping Humanity: How Modern Genetics is Changing Criminal Justice, Personal Medicine and Our Identities (https://amzn.to/35RY6wT). Could it be that shopping actually has health benefits? Listen as I describe one study that equates shopping with physical exercise. Plus, it also seems to offer emotional benefits as well – depending on how you shop. https://business.time.com/2013/04/16/is-retail-therapy-for-real-5-ways-shopping-is-actually-good-for-you/ PLEASE SUPPORT OUR SPONSORS! Indeed is offering SYSK listeners a $75 Sponsored Job Credit to get your jobs more visibility at https://Indeed.com/SOMETHING Go to https://uscellular.com/TryUS and download the USCellular TryUS app to get 30 days of FREE service! Keep you current phone, carrier & number while testing a new network. Try us out and make your switch with confidence! NerdWallet lets you compare top travel credit cards side-by-side to maximize your spending! Compare and find smarter credit cards, savings accounts, and more today at https://NerdWallet.com TurboTax Experts make all your moves count — filing with 100% accuracy and getting your max refund, guaranteed! See guarantee details at https://TurboTax.com/Guarantees Shop at https://Dell.com/deals now, to get great deals on leading-edge technology to match your forward-thinking spirit, with free shipping on everything! Learn more about your ad choices. Visit megaphone.fm/adchoices
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Today on Something You Should Know,
your name and the name you give your kids really do matter in life.
Then charisma.
What is it that people do to appear charismatic?
If someone shows up on a video or in a meeting or on a date and you instantly are drawn to them,
it's because they know exactly what to do with their hands, their voice, their words.
They are masterfully sending social signals of warmth and competence.
Also, the health benefits of shopping and a peek into the fascinating world of modern genetics.
For example, how does DNA last so long it can solve criminal cases that are decades old?
DNA is actually pretty hardy.
And so if it's left at a crime scene, you know, the DNA that's in the blood cells,
if there's blood on a crime scene, that DNA can last for a long time.
All this today on Something You Should Know.
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Something you should know. Fascinating intel. The world's top experts. And practical advice
you can use in your life. Today, Something You Should Know with Mike Carruthers.
Hello there. Welcome to another all-new episode of Something You Should Know.
I think parents, especially first-time parents, would agree that there's quite a bit of pressure in coming up with a name for your child.
And I'm about to add to that pressure because it does seem that your name or your child's name is all part of
how people perceive you. In a study in the Journal of Educational Psychology, experienced elementary
school teachers were asked to grade a set of paragraphs written by 10th graders entitled
What I Did Last Sunday. Eight different paragraphs were used, all about average and quality,
and attached to these essays were eight different names.
Four, Karen, Lisa, David, and Michael,
were rated as desirable names by students and teachers.
The other four, Bertha, Adele, Hubert, and Elmer,
were rated as undesirable.
The names were attached to papers at random so that, for example,
one paper that was labeled as written by Adele one time
was attributed to Karen or Lisa at other times.
Now, although the teachers were given identical papers with only the names being different,
they gave significantly higher grades to the papers written by students with desirable names.
In another study, published in the same journal,
6th graders' self-concept, meaning how effective, how attractive, and how valued they felt,
turned out to be related to the desirability of their first names.
Moreover, children with desirable first names scored higher on a standardized test of academic achievement.
Now, one possible interpretation of that is that teachers expect children with more popular names to do better. And so over time, those positive expectations
translate into higher academic achievement.
And that is something you should know.
I think we all know charisma when we see it.
And we like it when we see it.
Most of us are drawn to people who have charisma.
And I suspect many of us secretly wish we had more of it.
So can you have more of it?
Is charisma something you can acquire?
Or is it something you're just born with or not?
Well, that's a question Vanessa Van Edwards investigated.
She is the founder and lead investigator at Science of People.
She's also a renowned speaker and TED Talk giver.
She had a big best-selling book out called Captivate the Science of Succeeding with People.
And her latest book is called Cues, Master the Secret Language of Charismatic Communication.
Hi, Vanessa. Welcome to Something You Should Know.
Oh, thanks so much for having me. I'm happy to be here.
So since you've investigated it, what is charisma exactly?
Because it does seem hard to define.
You know it when you see it, but to describe it is difficult.
So what is it?
Yes, you're so right.
So the good news is, is we can learn charisma.
And when we actually look at highly charismatic people, they rank high in two specific traits.
A research has found this is groundbreaking research from Princeton University,
completely opened my eyes to how people work. they found that highly charismatic people are both at the same time
off the charts in warmth and off the charts in competence. In other words, they can be likable
and trustworthy and open, and at the same time, capable, productive, and efficient.
Well, that sounds like good news because warmth and competence are things anybody can have and exude and demonstrate.
So that would mean that anybody can have charisma.
And this is actually exactly what started me on this journey.
Little did I know, 17 years ago, I started a little folder on my desktop called Curious Cues.
And at the time, so I struggle with social anxiety. I
like to joke that I'm a recovering awkward person. And so at the time, I was always observing people
and I started to notice patterns. On the one hand, this was a year where there was a lot of
bad actors coming out. So there was athletes who were
admitting to doping. There was politicians who were lying. And I noticed that whether it was
a politician, an athlete, or a celebrity, if they were in shame or guilt, they were showing some
very similar cues for fear and anxiety and guilt. And on the other hand, I noticed that there were
very charismatic people.
And again, it was politicians, actors, celebrities, athletes. It didn't even matter their talent,
but they were showing similar positive cues. And I wondered, is there a way to code this?
Is there a way to learn what are the cues we send in negative times? And what are the
cues that we send in positive times? And can we adapt them? Can we adopt them? And I suspect your answer was yes, which is why you wrote a book about it. But
before we get into the cues specifically, in your definition of warmth and competence, I'm,
I guess I'm kind of surprised that confidence is not part of your definition of charisma.
You are so, yes. I, you know what, confidence was a bucket sort of in the research list for
a long time. And I actually wondered, is confidence a third bucket? What I've come to
realize is confidence comes from control. I think why I could not identify specific cues of confidence
different than warmth and competence is because what we like is we like people who are in control
of their cues. If someone shows up on a video or in a meeting or on a date or at a party,
and you instantly are drawn to them, it's because they know exactly what to do with their hands,
their voice, their words. They are masterfully encoding or sending social signals of warmth
and competence. But actually, confidence, the backdoor, the secret way into confidence is that
these highly charismatic people are always able to hit that balance with control.
And so, that's why we could not find those
standalone confidence cues. It was more that confidence was a side effect of effectively
using warmth and competence. So let's talk about these cues, because when I see somebody that I
think of as charismatic, I see the charisma, but I don't necessarily know what the building blocks
are. Is it what they say? Is it how they say it? Is how they hold their hands? I don't necessarily know what the building blocks are. Is it what they say? Is
it how they say it? Is how they hold their hands? I don't know what it is that they're doing,
but I can spot it a mile away. Yes, you're so right. We spot those charismatic people right
when they enter the room. It's like we're drawn to them. So there are four different cue channels,
modes of communication where we transmit our cues. The first one is
nonverbal. Our facial expressions, our posture, our gestures, those are all nonverbal cues that
we send the moment someone walks into a room. And by the way, introverts, introverts have this
mistaken belief that the moment that they start speaking is when they make their first impression.
But actually, we make our first impression the
moment someone first sees us. And that's why that first mode, nonverbal, is so important.
The next one is vocal. So, vocal is how we say our words, our volume, our pace, our cadence.
And that's sort of a secret mode that I think a lot of people don't realize that how you say
something is just as important as what you say. And then there's verbal, of course, the actual words we use. And then lastly is imagery. And that's the
colors we wear, the fonts we use, even fonts have personality, the props that we carry or that we
have in our background, in our Zoom background, or the props we have in our profile photos.
Those are all different imagery cues. And so given that those are the cues,
are there then recommended cues? Are there right and wrong answers? Should you use this font,
but not that font? Should you have this in your Zoom background, but not that in your Zoom
background? What do you say? I like to say there's no right or wrong cue because it's
dependent on your goals.
For example, so most people want to come across as highly charismatic.
They want to be as memorable as possible.
So for them, they want to hit that perfect balance of warmth and competence cues in all
those channels.
But there are some folks who maybe just want to come across as competent.
Maybe they don't want to be very
warm. They're in an interrogation or they need to solicit important information. Well, in that case,
they might not want to send signals of collaboration. They might just want to come
across as imposing or powerful. One example that I love to give is my good friend, Michelle Poehler.
She has a brand about addressing fears. And so in all of her branding
and all of her videos, she shows lots of fear cues or what I call danger zone cues. Those are
cues that are neither warm or competent. They're actually negative, but that's part of her brand.
She's showcasing how she conquers fear. So the good news is, is that everyone has their own
unique flavor of cues. And this is important. If we all did the same cues,
we would be robotic and no one wants that. But instead, I want people to think about
how you come across authentically is your recipe of warmth and competence. For example,
I used to believe that you had to be the bubbly extrovert to be likable, to be charismatic. And
that is not true at all. There is the bubbly extrovert to be likable, to be charismatic. And that is not true
at all. There is the bubbly extrovert, but there's also the quiet, contemplative, powerful introvert.
There's also the compassionate, empathetic, nurturing healer. And so the way that you use
those cues makes your unique cake, your unique flavor. So you really have to be pretty intentional about this to make that,
to create that recipe that you want to create to project the image you want to project.
I think that's confidence. So I think intentional is one of my favorite words.
Intentional is control, is confidence. If you know exactly how to show up in a room,
how to speak your words with confidence, how to speak your words with confidence,
how to share your passion or your ideas, what to do with your gestures, what to do with your face,
that is intention that's serving your goals. A lot of people, as they're reading the different cues,
they go, oh, that's why I do that naturally. And that's the good news. My goal is to help you be
a little bit more intentional. So you have the good news. My goal is to help you be a little bit more
intentional. So you have the cues you've already been doing accidentally that work for you, but
you're adding on just a little bit more intention. Talk about gestures. I think they're so important.
I mean, people use them all the time. They use them even when they're on the phone and nobody
can see them. I'm using them right now and nobody can see me, but I'm gesturing. Are there good
gestures to use or bad gestures to use that send messages that you do or don't want to send?
Gestures are sort of, I think, the best social hack when it comes to charisma. And the reason
for that is because we tend to forget about them. Our hands naturally, while we're speaking, tend to emphasize our gestures.
And researcher, Dr. Susan Golden Meadow, she's the chief researcher on gesture. She wrote a book
called Hearing Gesture. And she found two interesting things about gestures that changed
my perspective on how I use my hands. One is that when you use gestures along with your words, so you
match your words and your gestures,
your gestures emphasize your points.
So if you say, I have three ideas,
you hold up three fingers.
If you say you have a big idea,
you hold it like it's beach ball big.
If you have a small idea,
you hold it like it's a little tiny pea pinched small.
Those gestures help lower your listener's cognitive load.
So it's a gift to your listeners when you can
demonstrate or emphasize your words with your gestures. I like to think of it like a highlighter.
The second thing that she found is that gestures help speakers be more competent. So if I were to
ask you to tell me an embarrassing story while you sit on your hands, you would have a harder time recalling and transmitting that story.
And that's because our gestures are almost like a lubricant for our own thinking.
And also that adds a little bit of dynamism to my voice.
Even adding gestures that you can't see adds a kind of dimension to my vocal power.
It changes those vocal cues.
Charisma is the topic on the table, and my guest is Vanessa Van Edwards.
She is author of the book, Cues, Master the Secret Language of Charismatic Communication.
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So Vanessa, I understand that everybody has their own recipe, but very often we don't know exactly what situation we're about to walk into.
But we do know we want to look strong. We want to look powerful. We want to look charismatic.
Is there a basic recipe for walking in a room and looking and appearing charismatic, regardless of who you are or the situation?
When we studied highly charismatic people, we did find common recipes, if you will.
There are six charismatic cues.
There are five warmth cues and five big competence cues that those cues sort of make the basis
or the favorite cues, if you will.
So, you know, for example, one is how
much space you take up. So this is a really basic cue across genders and cultures and races.
University of British Columbia researchers, they found that athletes across cultures
make the same body language gestures when they win a race versus when they lose a race.
So winners typically take up more space.
They tilt their head up towards the sky.
They open up their arms.
They usually have lots of space.
They're claiming their space.
Whereas losers, losing athletes in defeat or shame, take up as little space as possible.
They roll in their shoulders.
They tuck their chin into their chest.
They clench their fists.
They make a pained expression. So when we first see someone, we are very quickly looking for winners. Now, of course,
this is completely subconscious. And that's a really important thing to note because these days,
most people are accidentally making their first impression in defeat posture. Every single time
you check your
phone, when you're in a waiting room, when you're walking into a restaurant, when you're walking to
a room, when you're waiting to greet someone, you are accidentally in the defeat posture. Your chin
is tucked to your chest. Your arms are tightly pressed to your sides. You're hunched over.
Sometimes you're making a pained expression. If you're concentrating on your emails,
that is your first impression before
you even hop up and shake their hands. You just made that first impression of looking more like
a losing athlete. So what I want people to think about is one of the easiest ways to up your power
factor. This is a competence cue is to make sure, especially in those first few seconds,
when you hop on Zoom or you walk into a room, you are claiming space. Now I don't want you to walk into every room like Rocky, right? Like that
would be a little bit too much, a little bit socially aggressive, but I do want you to create
space between your arms and your torso. I love chairs that have armrests for that reason. We
tend to not tuck in when we have armrests, our arms are a little bit broader. I want you to also maximize the space between your shoulder and your earlobe. Weird, weird measurements, I know. But that
measurement right there indicates, are you protecting? Are you tucking? Are you hunched
over? Are you rolling your shoulders up in anxiety? The more space you can create right
there, the more you're signaling to people, I feel relaxed, I feel calm, I feel confident.
Let's talk about eye contact, because very often in discussions about making a good impression or being influential or charismatic, that eye contact is really important.
So what do you think?
I would actually say yes, eye contact is great, but there is too much of a good thing.
The sweet spot, and this is just for Western cultures. So Western cultures, typically,
the right amount of eye contact is about 60 to 70% of the time. So it's not 100%. And that means
that in regular conversation, we know as humans that we have to look away sometimes. We look down
at our plate or our drink. We check out a sound across the room. And if we're thinking deeply, we typically look away. So if I were to ask you to,
for example, solve a math problem, so if I were to say, what's 10 times 10 plus 12 minus three?
If we were talking, you would probably look away to think, what is 10 plus 10? And that is because
when we're deeply thinking, we don't want to socially engage.
We're trying to critically think.
And so in really good conversations,
you have this beautiful dance
of making eye contact while you're listening
and then deeply thinking.
And then making great eye contact
while you're thinking and deeply listening.
And that has to do with the chemical oxytocin.
So oxytocin, simplified for our process,
it's a very complicated chemical in our body, but it's the chemical connection. And we make it when we're making good eye contact. And that's why it's so important is it actually creates a chemical reaction for both people in the conversation. their own recipe for charisma. But when I think of somebody who's charismatic, I have an image
of, you know, somebody who's very put together, who looks very sharp, very well dressed. There is
a charismatic image I have in my head. And so what are some other, what's another example of
charisma that isn't that? I think of someone like Johnny Depp, right?
Johnny Depp is kind of disheveled on purpose, you know?
He has, you know, even like, what's his character in Pirates of the Caribbean?
Jack Sparrow.
He has smudgy, yeah, Jack Sparrow.
And he has smudgy eyeliner and his hair is all over the place.
And he's sort of sloppy and we love him for it.
So that's part of his flavor of charisma that he sort of just owns the messiness.
So I think that's kind of exciting.
That's kind of a good thing is you know that for you, you appreciate the imagery cues of
being put together.
That hair, every hair in place, the colors are purposeful, the shoes are shined.
Some other people might find the opposite.
They might think of purposeful dishevelment
or not even caring and going out anyway
because their inner charisma shines through
might be their flavor of charisma.
I think that's kind of interesting.
Occasionally, I've noticed,
maybe you've noticed this too,
where you meet someone
and upon first meeting them,
they seem to have that charisma. They look the part, they walk the walk, they look charismatic.
And then you start to talk to them and it's like the more time you spend with them,
the less charismatic they become. And maybe it's because I'm a podcaster and I notice things like this,
but people who appear very competent,
and I'm not talking about you because you don't do this at all,
but they'll start to talk and they'll um and ah,
and there'll be these pauses and they don't seem to really put their thoughts together well.
And it's like the charisma just drains right out of them.
Yes, yes, you are so right. And by the way, thank you for saying it's not me,
because I've had to work on that. I use an app called Umo, and it counts your ums, your ahs,
your nos, your sos, your ooh, the likes, it counts those. And I've worked for years to actually
try to eradicate those from my speech
because it's absolutely a single signal of incompetence and verbal fillers of, uh,
that's a vocal filler. And then, you know, so like those are verbal fillers. And it's absolutely
true that when we're buying time or we're afraid to pause,
and that comes from a lack of confidence, we add those verbal fillers. And the problem is,
when do we use them the most in our most important presentations, interviews, and interactions?
And so this is a curse of being human that we can be super charismatic, never use a verbal filler when we're practicing in front of our mirror.
And then this was me before I got my TED Talk.
I practiced my TED Talk over and over and over again
in the mirror to make sure
that I eradicated those verbal fills.
So the moment you hit the stage,
that's when your anxiety goes up,
you get adrenaline, you get cortisol,
and then they come back.
So I very much appreciate it. The good news is for anyone who's listening, you get cortisol, and then they come back. So I very much appreciate it.
The good news is for anyone who's listening, you can, can, can eradicate it. I highly recommend
the MO app. It's a great way to untrain yourself. So understanding that there are a lot of elements
to charisma, what's the advice, the general advice though, that if I or anybody else wants to walk into a room, any room, and appear charismatic, what are the first three things I should do?
Right. Okay. So first is space, right? So making sure that you're claiming your space. Your shoulders are back. Your arms are loose. Your head is up and angled out. Okay. So that's the first space. Second is you want to give a
gesture, a very specific gesture, which is an acknowledgement gesture. So we love hand gestures.
So specifically in the first 10 seconds, is there a greeting gesture you can do? An open palm gesture
is great. So whenever I hop on video, I give a nice little wave. Whenever I walk into a room,
I gesture to my friends. When my friend or colleague or team member walks in a room, I greet them with my hand and beckon them over.
My goodness, we love an open palm gesture. So I use them as much as possible. I use them
when I'm speaking, when I'm greeting in my first impression. So space, purposeful gestures.
And the last one is eye contact. So that holding that gaze across the room. So you're beginning
to trigger that oxytocin even across the room during an interaction, even on video.
So the good news is research has even found that we can produce oxytocin through a webcam.
Last one is phone. So if you're on the phone, right, you don't have nonverbal cues. You only have verbal and vocal.
You can't really make eye contact. You can't. Your gestures don't really matter. Although they can add a little bit of dynamism, but research that we did during the pandemic,
I partnered with Dr. Paul Zak. Dr. Paul Zak is the kind of foremost oxytocin researcher. He runs
a lab called Immersion Neuroscience. And we wondered, you know, in this, when we're all on
phone and video, could we still produce oxytocin? How do we do it? And so we
found that even mentioning oxytocin words help produce oxytocin. So even when I'm on the phone,
I will often say, oh, I wish I could give you a hug, but I'll have to send one from here,
or I'm giving you a digital high five right now, or I'm sending a high five across the airwaves,
even saying hug, high five, handshake, touch, any of those kinds of words,
even just saying them in an email, those can also help produce oxytocin.
Well, it's one of those topics that I think everyone is curious about. And to hear your
definition of charisma as being a combination of warmth and competence, I think, is different than what most people would say.
I've been speaking with Vanessa Van Edwards, and the name of her book is Cues, Master the Secret Language of Charismatic Communication.
And you will find a link to that book in the show notes.
Thanks, Vanessa.
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There is a lot of talk today about genetics and DNA
and how you can take a DNA test and find out about your
background, your ancestors, and your health, and how DNA is helping to solve cold criminal cases,
how we genetically modify food, how we might genetically modify people. And frankly,
it isn't always easy to understand what all this means. So here to help is Dr. Joshua Rappaport.
He is a cellular biology expert who teaches at Boston College,
and he's the author of a book called Mapping Humanity,
how modern genetics is changing criminal justice, personal medicine, and our identities.
Hey Joshua, thanks for coming on to explain all
this. Thank you so much. I'm really excited to be speaking with you today. And so what is
modern genetics and what is all the excitement about in this field? The main point when we're
talking about genetics is, you know, we hear a lot about nature versus nurture, right? So nurture would be basically your environment, anything that happens to you as you develop,
things that shape who we are.
And the nature would be the genetics.
It would be the genes that you have, the DNA that you have in your body, which you
inherit from your parents, and what that impacts on your development and who you are and the
differences between people, you know. So something like eye color, for example, is, you know,
primarily a genetic thing, whereas things like height and weight will have a genetic component
and an environmental component, so nature and nurture at play. And when we talk about the real revolution in modern
genetics, it's really in the past few decades, our ability to quickly and cheaply and easily
figure out those genetic differences between people. So what makes one person's genetics
different from another person's genetics? And in addition to the sort of technology,
there's also the computer programs and the algorithms and things that are used to look
at that and make predictions and increase our understanding. One of the things we hear about
genetics and DNA is that it's helping to solve criminal cases. So how does that work? This molecule, this DNA, this deoxyribonucleic
acid is basically a long string. We call it in science, we call it a polymer, and it's a long
string of different pieces. And those pieces, the sequence of that DNA is different between one
person or another. Now, because we're all human, the vast majority
is going to be the same, like greater than 99% of every human's DNA is the same as every other
human's, but it's those differences that make an individual. And we have ways of identifying those
differences and being able to use that as a sort of fingerprint to identify one individual relative
to another. And also it can be used to identify one individual as a member of fingerprint to identify one individual relative to another. And also it can
be used to identify one individual as a member of a family because those differences will be similar
between people who are related. And so that's how they're able to find, you know, the killer in this
old cold case because the DNA doesn't go away. It doesn't disappear if there's enough of it.
Yeah, that's actually a really great point. So some of the molecules of life are very ephemeral
and are very sensitive to heat or light or humidity or whatever. But DNA is actually
pretty hardy. And so if it's left at a crime scene, you know, the DNA that's
in the blood cells, if there's blood on a crime scene, that DNA can last for a long time. I mean,
you know, you think back to Jurassic Park, right, where they were extracting DNA from
prehistoric insects that were in amber. Now that's a little fantastical. It's a science
fiction book and movie.
But, you know, the fundamental assumption there that DNA can last for a long, long time
is actually pretty accurate. So what is it that science that you can look at somebody's DNA and
say that they're predisposed to get some illness? How does that work? There's kind of this spectrum. And to put
it simply, basically, there are some very, very rare genetic diseases where if you inherit this
certain mutant gene or a combination of mutant genes, you will almost definitely develop that
disease. Now, that is thankfully very rare. What's obviously a
lot more common are things like heart disease, diabetes, you know, things like that. And these
are very complex and they involve lots of different genes and very subtle effects. So it's really this
spectrum. So we have ways of looking specifically for individual mutations for these really deadly, rare diseases.
And then we also have ways of looking more broadly at these more subtle differences,
which any individual, one of them won't definitely cause a disease. But if you accumulate enough of
them, and especially, again, going back to nature and nurture, if you have a certain type of lifestyle, you might be more likely to develop one of these complex diseases.
Like, for example, if you smoke and lung cancer runs in the family, those two things are going to be a problem because you're now more likely to get lung cancer.
Exactly. So, so for example, there are some genetics that are more likely to have,
you know, heart disease. And maybe if you eat really, really well, and you exercise a lot,
that'll be helpful in staving that off. But that doesn't mean that if you don't have those risk
factors, that you can, you know, eat cheeseburgers and milkshakes three times a day and not also develop
heart disease or whatever. And, you know, it's sort of like, you know, if you wear a seatbelt
and you're in a car accident, you might be protected. But if you don't wear a seatbelt
and you're not in a car accident, that doesn't mean that wasn't a risky thing to do.
Given that we now know so much about genes and how what makes up people, is there still more
that we don't know than we do know? Or has the have we cracked the code and we really get it now?
That's a that's a really great question. That's a really interesting question. And I would say that
there are a few different ways to look at it. So one is that when we talk about these tools to
look at DNA sequence or look at the genes or look at what's in somebody's DNA, we still haven't
really been able to easily and cheaply and readily sequence or identify or study every single bit of our DNA that's in our bodies.
And there's some parts that are just harder to discover, harder to decipher, harder to analyze.
Let's say people, somebody gets cancer, and maybe cancer runs in the family, maybe it doesn't.
But in any event, is cancer a genetic disease in the sense that it does something to
your genes and that's why you get sick, or is it not? It's really interesting, actually. So
there's sort of two answers to that question. So there are genes and certain versions of genes that run in families that increase risk for cancer. Absolutely.
A lot of what happens, though, is you get mutations that are created in your DNA
during the course of your life. So, for example, if you think about skin cancer,
there is certainly familial increased susceptibility.
But also what happens is, is that the actual radiation from the sunlight can actually mutate the DNA that can then lead to skin cells becoming cancer. So you have the DNA that you're born with, the gene sequences that you're born with, that you inherited from your family,
but those are changing as you grow and develop and continue to live your life.
And things like radiation, for example, things like toxic pollution, chemicals and things can go in and create mutations to the individual.
Now, luckily, at least, most of those changes won't then be
passed on to the next generation, because they might just be in a skin cell on your nose or
whatever, but they can affect the life of that individual. And that is a major cause of cancer
are those mutations that are caused to our DNA as we live our lives.
So now we have these tests that people can spit in a tube and send away and find out
all kinds of things about their ancestry and about potentially about diseases they might
be prone to.
Talk about those from your perspective.
Are these a good thing?
Are they accurate?
Do you do it?
What?
These personal genetic tests, I mean, I don't think you could inherently call them a good thing or a bad thing. I think it depends how they're used and it depends how people understand what the results mean and don't mean.
So people will spin a tube and send it off and they'll get some kind of a report back.
And millions and millions of people,
especially in America, have jumped on this and I've done it myself. And I think it's really interesting. Probably one of the reasons they're interested, interesting is because a lot of the
people that are doing it in America, you know, their families have only been here for decades
or a few hundred years. And a lot of people are interested to know, you know, back hundreds of
years ago, where did my family come from? That family history might have been lost. And so you
can learn about your ancestry. You can learn about your family history through this. And then there's
also usually a component or there can be a component that's looking at this disease risk.
And it won't say you have the following mutations that mean you are going to develop this disease. It'll
generally say something like, you know, you have this signature that can be associated with increased
risk of this disease. So, yeah, it's really interesting and it can be really useful, but also
it's usually not absolutely definitive. And another sort of caveat to all of this is that these things are only as powerful
as the databases of information that's already out there.
So it's one of those things where the more information that's collected, the better these
predictions can be made.
And one issue is that historically, up to this point,
a lot of this personal genetic testing has been done by generally people with, you know,
white European ancestry. So it sort of biases the assessment based upon that.
Explain, if you can, how what is now known about modern genetics, how that information, how that knowledge then allows us to treat disease in medicine.
If somebody has cancer and you can actually look at those cancer cells and look at the DNA in them and see what the mutations are, there actually are
treatments and therapies and drugs that can be specifically used depending on what the
mutations that cause the cancer are.
Another way it's used when we're talking about drugs is some people are sensitive or allergic
to certain drugs.
Some people have drugs or can be toxic in some people. And so by looking
at their DNA, by looking at their genetics, you can identify beforehand whether you should avoid
giving this kind of drug to this person because it's clear that they have a mutation. That means
they won't be able to tolerate that drug, metabolize that drug, process that drug,
and it could be toxic or non-functional. That's an area that is referred to as pharmacogenomics.
And that has been really, really revolutionary because up to that point, it was kind of like
a trial and error thing, or you would have to do sort of lots of laboratory tests to make sure
that somebody
would be able to tolerate a drug. And now you can just look at people's DNA to figure that out.
And then finally, I would say there's the world of what we refer to as gene therapy,
and that's where you can actually make changes to people's DNA in order to cure a disease. And this is something that's still primarily in the experimental
or developmental or clinical trial type of phase. Is it a case of being able to identify, well,
you have a mutant gene here, so we're just going to go in and take it out or demutantify it or
whatever you would do, and then that'll fix the problem.
Yeah, it could be exactly that simple. I mean, there are cases of blindness that are genetic,
and there are ways of introducing the correct gene into the eye or otherwise removing the gene that the mutant gene that's causing the blindness
and they can literally make the the blind regain sight however you know the price tag on those
types of things are like literally like a million dollars per eye so this may be a stupid question
but when we talk about genes and going in and fixing genes, well, where are the genes?
Like, okay, I have blue eyes, so I must have a gene for blue eyes.
Where is it?
If you wanted to go get it, where do you go to get it?
Every cell has a structure in it called the nucleus.
And in the nucleus is where the vast majority of our DNA, our genes reside.
So if the genes are books, the nucleus is the library.
And the magic and what really fascinates me actually is every cell has the same genes in it.
But a brain cell, a nerve cell is very different than a muscle cell is very
different than a skin cell. So if they all have the same genes, how are each of these cells so
different? And that's because, you know, it would sort of be like, if you have the same sheet music
for everybody in the in the chorus, but the basses are singing the bass and the altos are singing the
alto. So it's the same piece of music, but the different parts of the chorus are singing different
parts differently. Talk about how genetics is used to modify food and also maybe why
people object to that. And people don't like the idea, many cases of genetically modified food so what is that
all about it can be controversial because people can have an understandably understandable um you
know resistance especially depending on how it's presented but the the fundamental idea that you
know you could take a drought sensitive speciesensitive species and make it drought-tolerant,
and that the places that it's growing are, because of climate change, becoming drier,
and that this could increase food security and it could help people not starve is certainly a beneficial goal.
Well, because I think that the term genetically modified food sounds scary to a lot of people,
but it isn't necessarily scary.
It's just different.
An important thing we have to remember is that we're all genetically modified, right?
Evolution is constantly making mutations and changing things.
And, you know, at some level, if it was done in a lab in a year, or if it was done in the
fields in 10 years, you know, sort of what's the difference? I mean, when we eat corn, it bears
very little resemblance to the last wild occurring thing that looked like corn, right? Like humans
have been changing the genetics of corn for thousands of years. And the examples
of that, you know, throughout our food system can be seen. So if we can do that faster, if we can do
it more efficiently, if we can, with the ultimate goal of feeding more people, why, you know, I don't
see that as an inherently negative thing. You talked in the beginning about DNA and solving crimes,
but I'd like to get you to talk a little bit about,
it's not just the science of genetics,
it's also the fact that more and more people are getting these genetic tests done
that is helping to solve more crimes.
So when you talk about DNA being left at a crime scene, if you have a DNA sample
that you think may have come from a criminal, but you have no suspects, what can happen now is that
that unknown DNA sample can be analyzed through one of these genetic tests, and then it can be
uploaded. The results can be uploaded to
a database. And maybe the criminal hasn't had their DNA tested, but maybe their second cousin
has. And the family-based similarities are so striking that if a second cousin or an aunt or
an uncle or a great-grandparent had their DNA tested, and it's in that database,
the computer tools are so good that they can find that match. And then what happens is the next step
is pretty standard investigation, which is looking at birth and death records, looking at census
records, looking at real estate information, and figuring out whether there was
some relative of this person who's in the database who might have been at the time and place where
the crime was committed. So if you see a match and you say, oh, well, look, this second cousin
of this person in this database was living in that city the time when this crime was committed
and that person is still there, then that person now becomes a suspect. And that kind of genetic
based investigation works really well and has had a really major impact in closing some very
high profile cold cases. Well, what I find so fascinating about this topic is how fast it's changing.
Just as an example, when you think about DNA and using DNA in criminal cases,
I looked it up, and it was 1911 when fingerprints were first used in a criminal case.
That's just 100 years ago when fingerprints were first used in a criminal case. That's just a hundred years ago when fingerprints were first used.
And look how far we've come now with DNA evidence solving cases.
And that's just in one part of the whole topic of genetics.
I've been speaking with Dr. Joshua Rappaport.
He's a teacher at Boston College, a cellular biology expert,
and his book is called Mapping Humanity, How Modern Genetics is Changing Criminal Justice, Personal Medicine, and Our Identities.
And there's a link to his book in the show notes.
Thank you, Joshua.
This was really interesting.
Thank you very much.
If you'd like to do something good for your health, go shopping.
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And that is something you should know.
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