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  • 00:00

    Antiperspirant: it exists to make us smell better, but a new study finds - the opposite
    Antiperspirant: it exists to make us smell better, but a new study finds - the opposite

  • 00:04

    is true. And it actually - makes us smell worse!
    is true. And it actually - makes us smell worse!

  • 00:10

    Hey guys, Tara here for Dnews, and for most of us - antiperspirant is as much a part of
    Hey guys, Tara here for Dnews, and for most of us - antiperspirant is as much a part of

  • 00:18

    our daily routine, as brushing our teeth. 90% of Americans use some form of it every
    our daily routine, as brushing our teeth. 90% of Americans use some form of it every

  • 00:23

    single day - but what if it’s doing more harm than good? Aside from all the potential
    single day - but what if it’s doing more harm than good? Aside from all the potential

  • 00:27

    health side effects we hear about, could it actually be making us smell WORSE? Well, according
    health side effects we hear about, could it actually be making us smell WORSE? Well, according

  • 00:31

    to a new study published in the Archives of Dermatological Research - that’s exactly
    to a new study published in the Archives of Dermatological Research - that’s exactly

  • 00:36

    what it does.
    what it does.

  • 00:37

    Before we get into this, let’s examine what actually causes body odor. It all starts with
    Before we get into this, let’s examine what actually causes body odor. It all starts with

  • 00:41

    sweat. The sweat we secrete through our armpits, contains lipids and amino acids - that get
    sweat. The sweat we secrete through our armpits, contains lipids and amino acids - that get

  • 00:45

    broken down by bacteria, and that process is what creates the distinctive body odor
    broken down by bacteria, and that process is what creates the distinctive body odor

  • 00:50

    smell.
    smell.

  • 00:51

    Deodorants contain antimicrobial agents that kill off that bacteria, but they also contain
    Deodorants contain antimicrobial agents that kill off that bacteria, but they also contain

  • 00:56

    chemicals that replace the bad odors with good ones. Antiperspirants work the opposite
    chemicals that replace the bad odors with good ones. Antiperspirants work the opposite

  • 01:01

    way, by physically plugging up our sweat glands with aluminum-based compounds. So where deodorants
    way, by physically plugging up our sweat glands with aluminum-based compounds. So where deodorants

  • 01:06

    can only mask the smell, antiperspirants actually prevent the sweat that causes it. Of course
    can only mask the smell, antiperspirants actually prevent the sweat that causes it. Of course

  • 01:11

    most antiperspirants are also deodorants - so as far as body odor goes, they’re effectively
    most antiperspirants are also deodorants - so as far as body odor goes, they’re effectively

  • 01:15

    working double duty.
    working double duty.

  • 01:16

    It seems too good to be true, and like most things - it probably is. Messing with our
    It seems too good to be true, and like most things - it probably is. Messing with our

  • 01:21

    body’s natural composition of bacteria, typically comes with side effects. So to test
    body’s natural composition of bacteria, typically comes with side effects. So to test

  • 01:25

    how these products affect us, a team of researchers at the University of Ghent in Belgium, asked
    how these products affect us, a team of researchers at the University of Ghent in Belgium, asked

  • 01:30

    6 men and 2 women to stop using any kind of deodorant and antiperspirant for an entire
    6 men and 2 women to stop using any kind of deodorant and antiperspirant for an entire

  • 01:35

    month. Specifically, 4 of the subjects stopped using deodorant - and the other 4 stopped
    month. Specifically, 4 of the subjects stopped using deodorant - and the other 4 stopped

  • 01:40

    using antiperspirant.
    using antiperspirant.

  • 01:40

    As a control, they recruited another subject who didn’t use either one regularly - and
    As a control, they recruited another subject who didn’t use either one regularly - and

  • 01:45

    asked them to start using deodorant for the duration of the month.
    asked them to start using deodorant for the duration of the month.

  • 01:49

    At several points, before, during, and after the trial, researchers analyzed each subject’s
    At several points, before, during, and after the trial, researchers analyzed each subject’s

  • 01:53

    armpit bacteria - and found that switching hygiene habits significantly altered the bacterial
    armpit bacteria - and found that switching hygiene habits significantly altered the bacterial

  • 01:58

    communities of each and every person. Specifically, they noticed one common trend among every
    communities of each and every person. Specifically, they noticed one common trend among every

  • 02:04

    subject: which is that antiperspirants led to a clear increase of Actinobacteria.
    subject: which is that antiperspirants led to a clear increase of Actinobacteria.

  • 02:09

    Actinobacteria is just one of many kinds of bacteria living in the armpit, but it also
    Actinobacteria is just one of many kinds of bacteria living in the armpit, but it also

  • 02:13

    happens to be the smelliest kind, and it’s predominantly associated with BO. Meaning
    happens to be the smelliest kind, and it’s predominantly associated with BO. Meaning

  • 02:17

    the very substance that’s supposed to prevent body odor, is actually making us smell worse.
    the very substance that’s supposed to prevent body odor, is actually making us smell worse.

  • 02:22

    Now, why on earth would something like this happen?
    Now, why on earth would something like this happen?

  • 02:24

    Well, the author of the study believes the aluminum compounds in antiperspirant - are
    Well, the author of the study believes the aluminum compounds in antiperspirant - are

  • 02:28

    killing off all of the good bacteria, and allowing the bad, more smelly ones to dominate.
    killing off all of the good bacteria, and allowing the bad, more smelly ones to dominate.

  • 02:33

    Which explains why only antiperspirant is to blame. By comparison, the study found that
    Which explains why only antiperspirant is to blame. By comparison, the study found that

  • 02:37

    subjects who used deodorant - actually experienced a decrease in Actinobacteria.
    subjects who used deodorant - actually experienced a decrease in Actinobacteria.

  • 02:42

    So, what’s the take home message here? Should we all just forgo antiperspirant, and start
    So, what’s the take home message here? Should we all just forgo antiperspirant, and start

  • 02:46

    wearing deodorant instead? Well… yes and no. In the long run, deodorant is probably
    wearing deodorant instead? Well… yes and no. In the long run, deodorant is probably

  • 02:51

    better for you - but it still doesn’t address the root cause of the issue, which is the
    better for you - but it still doesn’t address the root cause of the issue, which is the

  • 02:56

    bacteria that causes odors. All deodorant does is mask them. So really, it’s the lesser
    bacteria that causes odors. All deodorant does is mask them. So really, it’s the lesser

  • 03:00

    of 2 evils. But there’s gotta be a better solution out there, right?
    of 2 evils. But there’s gotta be a better solution out there, right?

  • 03:04

    Well, there is - and it’s exactly what the author of this study is working on: armpit
    Well, there is - and it’s exactly what the author of this study is working on: armpit

  • 03:09

    bacterial transplantation. It’s when you take away the bad bacteria from someone with
    bacterial transplantation. It’s when you take away the bad bacteria from someone with

  • 03:13

    body odor - and replace it with the good bacteria from a relative of that person, who doesn’t
    body odor - and replace it with the good bacteria from a relative of that person, who doesn’t

  • 03:18

    have body odor. So far, they’ve tried it on over 15 people,
    have body odor. So far, they’ve tried it on over 15 people,

  • 03:21

    and for most subjects - they say it brings immediate improvement, that’s often times
    and for most subjects - they say it brings immediate improvement, that’s often times

  • 03:25

    permanent. Obviously, a procedure like this would be used for only the most extreme cases
    permanent. Obviously, a procedure like this would be used for only the most extreme cases

  • 03:29

    - but for now, it seems like a natural - and more effective - alternative to deodorant
    - but for now, it seems like a natural - and more effective - alternative to deodorant

  • 03:34

    and antiperspirant. I’ll say this much - and it’s probably
    and antiperspirant. I’ll say this much - and it’s probably

  • 03:37

    TMI - but I stopped using antiperspirant regularly a couple years ago - now I use it maybe 2,
    TMI - but I stopped using antiperspirant regularly a couple years ago - now I use it maybe 2,

  • 03:42

    3 times a week - and I’ve actually noticed that even though I sweat slightly less on
    3 times a week - and I’ve actually noticed that even though I sweat slightly less on

  • 03:46

    the days I use it, I also smell more. So, I’m not entirely convinced it’s really
    the days I use it, I also smell more. So, I’m not entirely convinced it’s really

  • 03:51

    done a whole lot to improve my life. That’s just me though - I’m sure some of you out
    done a whole lot to improve my life. That’s just me though - I’m sure some of you out

  • 03:55

    there do a lot more strenuous activities than I, so maybe consult your significant other
    there do a lot more strenuous activities than I, so maybe consult your significant other

  • 03:59

    before you throw your deodorant in the trash. It is a courtesy, after all.
    before you throw your deodorant in the trash. It is a courtesy, after all.

  • 04:02

    [YOUTUBE] Now to completely switch gears for a second,
    [YOUTUBE] Now to completely switch gears for a second,

  • 04:04

    I wanna mention another show we have here at Discovery, called TestTube - that’s hosted
    I wanna mention another show we have here at Discovery, called TestTube - that’s hosted

  • 04:08

    by Trace and myself. It’s a daily show, like Dnews - but geared towards current events.
    by Trace and myself. It’s a daily show, like Dnews - but geared towards current events.

  • 04:14

    Trace did an episode earlier this week on why the US and China are investing so much
    Trace did an episode earlier this week on why the US and China are investing so much

  • 04:18

    money into Africa, and it’s a fascinating angle on that whole discussion. So if you’re
    money into Africa, and it’s a fascinating angle on that whole discussion. So if you’re

  • 04:22

    interested in learning more about that, just head over to youtube.com/testtubenetwork - and
    interested in learning more about that, just head over to youtube.com/testtubenetwork - and

  • 04:26

    you can watch all of our episodes in one neat webpage.
    you can watch all of our episodes in one neat webpage.

  • 04:29

    In the meantime, let us know in the comments below, what you think of this study - and
    In the meantime, let us know in the comments below, what you think of this study - and

  • 04:29

    if you think you could survive without deodorant or antiperspirant. Just try it for a week
    if you think you could survive without deodorant or antiperspirant. Just try it for a week

  • 04:29

    - you might be surprised! That’s it for me, but thank you guys for watching!
    - you might be surprised! That’s it for me, but thank you guys for watching!

All verb
finds
/fīnd/

word

discover by chance or unexpectedly

Antiperspirant Makes You Smell Worse!

173,032 views

Intro:

Antiperspirant: it exists to make us smell better, but a new study finds - the opposite
is true. And it actually - makes us smell worse!. Hey guys, Tara here for Dnews, and for most of us - antiperspirant is as much a part of
our daily routine, as brushing our teeth. 90% of Americans use some form of it every
single day - but what if it’s doing more harm than good? Aside from all the potential
health side effects we hear about, could it actually be making us smell WORSE? Well, according
to a new study published in the Archives of Dermatological Research - that’s exactly
what it does.. Before we get into this, let’s examine what actually causes body odor. It all starts with
sweat. The sweat we secrete through our armpits, contains lipids and amino acids - that get
broken down by bacteria, and that process is what creates the distinctive body odor
smell.. Deodorants contain antimicrobial agents that kill off that bacteria, but they also contain
chemicals that replace the bad odors with good ones. Antiperspirants work the opposite
way, by physically plugging up our sweat glands with aluminum-based compounds. So where deodorants
can only mask the smell, antiperspirants actually prevent the sweat that causes it. Of course
most antiperspirants are also deodorants - so as far as body odor goes, they’re effectively
working double duty.. It seems too good to be true, and like most things - it probably is. Messing with our
body’s natural composition of bacteria, typically comes with side effects. So to test

Video Vocabulary

/brəSH/

verb

To clean, paint, or apply something with a brush.

/kənˈtān/

verb

have or hold within.

/ˈwərkiNG/

adjective noun verb

Doing your job. action of doing work. To be functioning properly, e.g. a car.

/əˈnəT͟Hər/

adjective determiner pronoun

One more, but not this. used to refer to additional person or thing of same type as one. One more (thing).

/ˈreɡyələrlē/

adverb

with constant pattern.

/THro͞o/

adjective adverb preposition

From one end or side of something to the other. expressing movement into one side and out of other side of opening etc.. moving in one side and out of other side of.

/səˈkrēt/

verb

To produce a liquid from a bodily organ.

/ˈnaCH(ə)rəl/

adjective adverb noun

Being as one would expect; being usual or normal. naturally. person having innate talent.

/dēˈōdərənt/

noun other

substance which removes unpleasant smells. Substance applied to the skin to hide body smells.

noun other verb

person or thing that is being discussed, described, or dealt with. What books, articles etc. is about; themes. cause or force person or thing to undergo.

/əˈfekt/

noun other verb

change resulting from cause. Changes brought about by a cause; results. cause something to happen.

/ˈprädəkt/

noun other

manufactured article or substance. Items that can be bought.

/ˈfizik(ə)lē/

adverb

In a manner related to the body.

/ˈpräˌses/

noun verb

Dealing with official forms in the way required. perform mechanical or chemical operations on.