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ⓒShutterstockCaduceus
Passingthroughtheatmosphere,UVAand10percentofUVB
environments and this
ⓒiStock
reach each region. As the amount of sunlight reaching each
even impacted not only
regiondependsonlatitude,theamountofUVAandUVBalso
how people looked, but
differsaccordingly.UVAstronglystrikestheequatorialregions.
howtheysmelled.Body
Therefore,forthosewholiveneartheequator,maximizingthe
odorisoftentiedtorace
amountofmelaninthatblocksUVAismostfavorablefortheir
andusedtojustifyracist
survival. The dark skin found in native Africans in equatorial
discrimination with the
regions is a byproduct of adaptation for survival. On the other
logic that certain group
hand, at higher latitudes, the sun is lower and the atmosphere
smells unpleasant.
is thicker than in low-latitude regions. Thus, most UVB is
However, body odor
▲The fatty acid and chemicals secreted
absorbed by the atmosphere, and only small amounts reached
is just a natural
from the apocrine sweat gland react with
high-latituderegions.Assomehominidswithdarkskinmoved
phenomenon derived
bacteriaandreleaseskingas.
to higher latitude regions outside of Africa, UVB exposure
from genetic diversity and different eating habits. Body odor
was greatly reduced. In the high-latitude regions, their dark
occurs when constitutive substances in the body are released
skin, including large amounts of melanin, sharply blocked
in the form of gas. Sweat glands and eating habits affect one’s
UVB.ThisdisturbedvitaminDsynthesisandthreatenedtheir
bodyodor.Firstofall,whensweatglandssecretesweat,resident
survival.Forthatreason,skinbecamelighterincolorsothatit
floras* inside the skin make sebum to be oxidized, producing
couldabsorbtheproperamountofUVBtosynthesizevitamin
skin gas. Human beings have two types of sweat glands: one
D. As a result, hominids with pale skin appeared. Melanin
is the eccrine sweat gland, and the other is the apocrine sweat
determines not only skin color but also the color of the eyes
gland.Theeccrinesweatglandsecretesodorlesssweat.Onthe
and hair. The
other hand, the apocrine sweat gland secretes odorous sweat.
greater amount
When the fatty acid and chemicals secreted from the apocrine
of melanin in
sweat gland react with bacteria, odorous skin gas is released.
the iris, the
Sweat odor varies from person to person depending on their
da rker the
genes. The genes of human beings have cumulated in different
eyes. Blue eyes
proportionsdependingontheregionwhereonehaslived.People
indicate one has
have both the G-type gene and the A-type gene inside their
a low amount
bodies. A person with more G-type genes tends to smell more
▲Melanocytes, the cells that produce melanin,
synthesize melanin from the hair papilla and color
of melanin.
unpleasantthanapersonwithmoreA-typegenes.Inthebodyof
thehair.
Si m i la rly,
peoplewithmoreoftheG-typegenes,theapocrinesweatgland
melanocytes, the cells that produce melanin, synthesize
secretesstickysweatwithprotein,fat,andammonia.Afterthat,
melanin from the hair bulb and color the hair. People with a
the bacteria decompose these substances and cause body odor.
large amount of melanin tend to have dark hair, while people
Generally, Africans, South Americans, and Europeans tend to
withlessmelaninhaveblondhair.Inotherwords,peopleliving
havemoreoftheG-typegenes,whileAsianshavemoreofthe
neartheequatorgenerallyhavedarkerskin,eyes,andhair,and
A-typegenes.
people living in higher-latitude regions have brighter skin and
Next, substances released from blood in the form of skin
hair,andblueeyes.
gas also affect one’s body odor. Accordingly, one’s eating
habits can affect his or her body odor. The high-fat and high-
calorie diets including a large amount of dairy products such
*Melanin:Melaninisadarkpigmentthatdeterminesone’sskincolor.Thepigmentis
presentintheskin,hair,eyes,andsoon,absorbingultravioletraysnotpenetrating
as milk, butter, and cheese, may promote sebum secretion,
theskin.
causing body odors. Similarly, when one eats garlic, an oily
DifferencesinBodyOdor:GenesandEatingHabits
yellow liquid called allicin, which gives garlic its distinctive
DetermineOdor
odor, is released into the blood. Afterward, allicin mixes with
In addition to changes in appearance, human beings went
sweat and spit to be released in the form of odorous skin gas.
through several other changes while adapting to different
In certain regions, people used to eat food with a lot of spices
16
www.theargus.org
Passingthroughtheatmosphere,UVAand10percentofUVB
environments and this
ⓒiStock
reach each region. As the amount of sunlight reaching each
even impacted not only
regiondependsonlatitude,theamountofUVAandUVBalso
how people looked, but
differsaccordingly.UVAstronglystrikestheequatorialregions.
howtheysmelled.Body
Therefore,forthosewholiveneartheequator,maximizingthe
odorisoftentiedtorace
amountofmelaninthatblocksUVAismostfavorablefortheir
andusedtojustifyracist
survival. The dark skin found in native Africans in equatorial
discrimination with the
regions is a byproduct of adaptation for survival. On the other
logic that certain group
hand, at higher latitudes, the sun is lower and the atmosphere
smells unpleasant.
is thicker than in low-latitude regions. Thus, most UVB is
However, body odor
▲The fatty acid and chemicals secreted
absorbed by the atmosphere, and only small amounts reached
is just a natural
from the apocrine sweat gland react with
high-latituderegions.Assomehominidswithdarkskinmoved
phenomenon derived
bacteriaandreleaseskingas.
to higher latitude regions outside of Africa, UVB exposure
from genetic diversity and different eating habits. Body odor
was greatly reduced. In the high-latitude regions, their dark
occurs when constitutive substances in the body are released
skin, including large amounts of melanin, sharply blocked
in the form of gas. Sweat glands and eating habits affect one’s
UVB.ThisdisturbedvitaminDsynthesisandthreatenedtheir
bodyodor.Firstofall,whensweatglandssecretesweat,resident
survival.Forthatreason,skinbecamelighterincolorsothatit
floras* inside the skin make sebum to be oxidized, producing
couldabsorbtheproperamountofUVBtosynthesizevitamin
skin gas. Human beings have two types of sweat glands: one
D. As a result, hominids with pale skin appeared. Melanin
is the eccrine sweat gland, and the other is the apocrine sweat
determines not only skin color but also the color of the eyes
gland.Theeccrinesweatglandsecretesodorlesssweat.Onthe
and hair. The
other hand, the apocrine sweat gland secretes odorous sweat.
greater amount
When the fatty acid and chemicals secreted from the apocrine
of melanin in
sweat gland react with bacteria, odorous skin gas is released.
the iris, the
Sweat odor varies from person to person depending on their
da rker the
genes. The genes of human beings have cumulated in different
eyes. Blue eyes
proportionsdependingontheregionwhereonehaslived.People
indicate one has
have both the G-type gene and the A-type gene inside their
a low amount
bodies. A person with more G-type genes tends to smell more
▲Melanocytes, the cells that produce melanin,
synthesize melanin from the hair papilla and color
of melanin.
unpleasantthanapersonwithmoreA-typegenes.Inthebodyof
thehair.
Si m i la rly,
peoplewithmoreoftheG-typegenes,theapocrinesweatgland
melanocytes, the cells that produce melanin, synthesize
secretesstickysweatwithprotein,fat,andammonia.Afterthat,
melanin from the hair bulb and color the hair. People with a
the bacteria decompose these substances and cause body odor.
large amount of melanin tend to have dark hair, while people
Generally, Africans, South Americans, and Europeans tend to
withlessmelaninhaveblondhair.Inotherwords,peopleliving
havemoreoftheG-typegenes,whileAsianshavemoreofthe
neartheequatorgenerallyhavedarkerskin,eyes,andhair,and
A-typegenes.
people living in higher-latitude regions have brighter skin and
Next, substances released from blood in the form of skin
hair,andblueeyes.
gas also affect one’s body odor. Accordingly, one’s eating
habits can affect his or her body odor. The high-fat and high-
calorie diets including a large amount of dairy products such
*Melanin:Melaninisadarkpigmentthatdeterminesone’sskincolor.Thepigmentis
presentintheskin,hair,eyes,andsoon,absorbingultravioletraysnotpenetrating
as milk, butter, and cheese, may promote sebum secretion,
theskin.
causing body odors. Similarly, when one eats garlic, an oily
DifferencesinBodyOdor:GenesandEatingHabits
yellow liquid called allicin, which gives garlic its distinctive
DetermineOdor
odor, is released into the blood. Afterward, allicin mixes with
In addition to changes in appearance, human beings went
sweat and spit to be released in the form of odorous skin gas.
through several other changes while adapting to different
In certain regions, people used to eat food with a lot of spices
16
www.theargus.org
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