Reasons why sun exposure will give you skin cancer - PowerPoint PPT Presentation


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Reasons why sun exposure will give you skin cancer


Reasons why sun exposure will give you skin cancer – PowerPoint PPT presentation

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Title: Reasons why sun exposure will give you skin cancer

Reasons Why Sun Exposure Will Give You Skin
  • Overexposure to the sun does more than make you
    age faster it also increases the risk of skin
    cancer. Although a healthy glow is considered an
    attractive feature, sun exposure damages the
    fiber in the skins elastin, which causes the
    skin to sag, stretch, and lose its ability to
    bounce back after being stretched. Skin cancer is
    the most common form of cancer in the United
    States and the numbers keep rising. Here is why
    you need to protect yourself in the sun.

  • Too much exposure to the sun may weaken the
    immune system in your skin. According to Kim
    Kripe, chairman at the M.D. Anderson Cancer
    Center at the University of Texas in Houston of
    the immunology department, We do know that
    ultraviolet light does cause immunological
    changes in humans.

  • Thats clear. Its a fairly subtle effect. Its
    not total immune suppression like the AIDS
    virus. Research shows that skin cancer due to
    immune system suppression seems to affect light
    skinned and dark skinned people alike.

  • Sunburn can cause damage to the genetic material
    in the skins cells. If sunburn happens
    frequently enough, it can cause cells to start
    growing out of control, which may develop into

  • Peeling after sunburn is the bodys way of
    getting rid of damaged skin cells that could
    possibly lead to cancer. But sometimes even
    though the skin peels away and forms new layers,
    underlying damage can remain. Therefore, it is
    important to avoid burning in the first place.

  • According to the American Cancer Society, people
    who use tanning beds are more at risk of
    developing skin cancer than people who do not.
    Individuals who started indoor tanning before the
    age of thirty to thirty-five are most at risk of
    developing melanoma, which is considered to be
    one of the most dangerous forms of skin cancer.
    People who started using indoor tanning beds
    before the age of twenty-five have a greater risk
    of developing basal and squamous cell skin cancer.

  • Research indicates that sun exposure causes a
    type of mutation known as p53 in skin cancers at
    a higher frequency in skin cancer than in other
    types of cancer.

  • The p53 genetic mutation has been shown to arise
    in animal studies as early as one week within
    chronic sun exposure and reaches its maximum at
    four to eight weeks of exposure. Another genetic
    mutation known as patched (PTC) has been found on
    the skin of sun-exposed areas of the skin.

  • Sun exposure causes damage to the fibers in
    skins elastin, which is part of the skins
    connective tissue. Elastin is what helps your
    skin return to normal after it has been poked or

  • These fibers begin to break down when they are
    overexposed to the sun and may cause sagging and
    stretching of the skin. When skin becomes so
    exposed to the sun that its elastin starts to
    break down, it may cause cellular damage to
    healthy skin cells that eventually lead to skin

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