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Sun exposure = skin cancer? Not likely.

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General fitness, health and nutrition
Published
9 July 2007
Last activity
12 July 2007
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TC
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  1. 1) We evolved for millions of years in the direct light of the sun. We
    need it to live. It is essential for life. Why is it that, in the 21st
    century, doctors now see the sun as a source of illness and skin
    cancer? One would think that millions of years of evolution would have
    made this concept impossible. Kinda like blaming fish deaths on
    drowning.

    2) Maine and the State of Washington (the foggy states) has more skin
    cancer per capita than California and Florida (the big Sun States).

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.

  2. TC said:


    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.

    Sunburn is a bigger concern than simply tanning. Tanning at least
    gives the body tha ability to adapt and protect itself. The upper
    torso is more likely to be burned as many have rarely ever seen
    sunlight.

  3. Have a reference on the melanoma site frequency?
    It was my understanding the back of the neck is on
    of the most frequent site for melanoma. It certainly is
    the most over toasted part of my skin.

    TC said:

    1) We evolved for millions of years in the direct light of the sun. We
    need it to live. It is essential for life. Why is it that, in the 21st
    century, doctors now see the sun as a source of illness and skin
    cancer? One would think that millions of years of evolution would have
    made this concept impossible. Kinda like blaming fish deaths on
    drowning.

    2) Maine and the State of Washington (the foggy states) has more skin
    cancer per capita than California and Florida (the big Sun States).

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.

  4. Hi rates of skin cancer happens in countries with high access to
    sunblock and modern skin care products

    TC said:

    1) We evolved for millions of years in the direct light of the sun. We
    need it to live. It is essential for life. Why is it that, in the 21st
    century, doctors now see the sun as a source of illness and skin
    cancer? One would think that millions of years of evolution would have
    made this concept impossible. Kinda like blaming fish deaths on
    drowning.

    2) Maine and the State of Washington (the foggy states) has more skin
    cancer per capita than California and Florida (the big Sun States).

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.

  5. Tim said:
    TC said:

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.

    Sunburn is a bigger concern than simply tanning. Tanning at least
    gives the body tha ability to adapt and protect itself. The upper
    torso is more likely to be burned as many have rarely ever seen
    sunlight.

    What is the difference between sunburn and suntan? Not much. One is a
    slower "damage", one is a little faster "damage". Do either cause skin
    cancer? Doubt it.

  6. Quoted message said:

    Have a reference on the melanoma site frequency?
    It was my understanding the back of the neck is on
    of the most frequent site for melanoma. It certainly is
    the most over toasted part of my skin.

    TC said:

    1) We evolved for millions of years in the direct light of the sun. We
    need it to live. It is essential for life. Why is it that, in the 21st
    century, doctors now see the sun as a source of illness and skin
    cancer? One would think that millions of years of evolution would have
    made this concept impossible. Kinda like blaming fish deaths on
    drowning.

    Quoted message said:

    2) Maine and the State of Washington (the foggy states) has more skin
    cancer per capita than California and Florida (the big Sun States).

    Quoted message said:

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.- Hide quoted text -

    - Show quoted text -

    http://www.nlm.nih.gov/medlineplus/ency/article/002133.htm

    Melanoma skin cancers are most frequently found on the backs of men,
    and on the backs or legs of women. These tend to be larger than a
    pencil eraser, have two or more colors (usually black and brown), and
    uneven edges.

  7. TC said:
    Tim said:
    TC said:

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? Skin cancers are predominantly on the
    upper torso, on the back and on the chest, beneath where a typical
    short sleeve shirt would cover, where one would have to explicitly
    uncover oneself to get excessive sun exposure.

    Sunburn is a bigger concern than simply tanning. Tanning at least
    gives the body tha ability to adapt and protect itself. The upper
    torso is more likely to be burned as many have rarely ever seen
    sunlight.

    What is the difference between sunburn and suntan? Not much. One is a
    slower "damage", one is a little faster "damage". Do either cause skin
    cancer? Doubt it.

    Obviously you have never had suburn which causes the skin to turn red
    than the dead skin peels off. No differen't than if you burned
    yourself on a very hot plate. I have had sunburn bad enough as a kid
    to have a big water blister, not good.

  8. TC said:

    On Jul 9, 6:55 pm, Tim <[email hidden]> wrote:

    Quoted message said:

    What is the difference between sunburn and suntan? Not much. One is a
    slower "damage", one is a little faster "damage". Do either cause skin
    cancer? Doubt it.

    Let's see... go with your 'doubts' OR the advice of dermatologists/
    doctors...? Hmmmm... I think it's probably wiser to go the latter,
    with people who actually STUDY the effects, and say it's best to limit
    your exposure to early morning/very late afternoon sun (less than 30
    minutes will get you all the vitamin D you need) and keep the skin
    covered or try to stay out of it as much as possible the rest of the
    day.

    I don't want skin/face that looks like a prune.

    Patrick

  9. Tim said:
    TC said:
    Tim said:

    On Mon, 09 Jul 2007 11:44:41 -0700, TC <[email hidden]> wrote:

    Quoted message said:
    Quoted message said:

    >3) If sun exposure causes the damage that leads to skin cancer, why
    >are skin cancers not predominantly on the face, the neck and/or the
    >hands and forearms where one tends to get a lot of sun exposure
    >whether you want it or not? Skin cancers are predominantly on the
    >upper torso, on the back and on the chest, beneath where a typical
    >short sleeve shirt would cover, where one would have to explicitly
    >uncover oneself to get excessive sun exposure.

    Quoted message said:
    Quoted message said:

    Sunburn is a bigger concern than simply tanning. Tanning at least
    gives the body tha ability to adapt and protect itself. The upper
    torso is more likely to be burned as many have rarely ever seen
    sunlight.

    Quoted message said:

    What is the difference between sunburn and suntan? Not much. One is a
    slower "damage", one is a little faster "damage". Do either cause skin
    cancer? Doubt it.

    Obviously you have never had suburn which causes the skin to turn red
    than the dead skin peels off. No differen't than if you burned
    yourself on a very hot plate. I have had sunburn bad enough as a kid
    to have a big water blister, not good.- Hide quoted text -

    - Show quoted text -

    There is a finer line than one would thimk between a sunburn and a
    suntan. Every tan begins as a burn. Tanning is the bodies response to
    a burn. The only difference is a matter of degrees. A burn is just
    more sun exposure than a tan.

  10. Quoted message said:
    TC said:

    On Jul 9, 6:55 pm, Tim <[email hidden]> wrote:
    What is the difference between sunburn and suntan? Not much. One is a
    slower "damage", one is a little faster "damage". Do either cause skin
    cancer? Doubt it.

    Let's see... go with your 'doubts' OR the advice of dermatologists/
    doctors...? Hmmmm... I think it's probably wiser to go the latter,
    with people who actually STUDY the effects, and say it's best to limit
    your exposure to early morning/very late afternoon sun (less than 30
    minutes will get you all the vitamin D you need) and keep the skin
    covered or try to stay out of it as much as possible the rest of the
    day.

    I don't want skin/face that looks like a prune.

    Patrick

    Let's see.... go with what makes sense in the real world or go with
    what doesn't make sense in the real world.... hmmmmm?

    Dermatologists don't *study* sun, sun exposure and skin cancer. They
    study conditions and treatments. They treat patients and conditions
    according to what they've been taught in med school. And virtually all
    the universities where medical doctors are taught the subject is
    heavily funded by either the food industry or the pharmaceutical
    industry or both.

    Again here is what makes sense.

    1) We evolved as an organism with the sun, why would moderate exposure
    over a lifetime become dangerous to us.

    2) Skin cancers do not commonly occur on the parts of the body that
    gets the most exposure.

    3) The states where there is more chance of sun exposure has less skin
    cancers than states with less chance of sun exposure.

    "When you have eliminated all which is impossible, then whatever
    remains, however improbable, must be the truth." (Sherlock Holmes)

  11. TC said:

    2) Maine and the State of Washington (the foggy states) has more skin
    cancer per capita than California and Florida (the big Sun States).

    Look at http://dceg.cancer.gov/cgi-bin/atlas/mapview2?direct=melswm70
    to see that the southern states have a much higher mortality from
    melanoma.

    Quoted message said:

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? ...

    One website says: "Basal cell skin cancer occurs on the face, scalp,
    ears, hands, shoulders and back."

    If sunlight has nothing to do with skin cancer, people would also have
    to watch their ass.

    --
    Ron

  12. Ron Peterson said:
    TC said:

    2) Maine and the State of Washington (the foggy states) has more skin
    cancer per capita than California and Florida (the big Sun States).

    Look athttp://dceg.cancer.gov/cgi-bin/atlas/mapview2?direct=melswm70
    to see that the southern states have a much higher mortality from
    melanoma.

    Quoted message said:

    3) If sun exposure causes the damage that leads to skin cancer, why
    are skin cancers not predominantly on the face, the neck and/or the
    hands and forearms where one tends to get a lot of sun exposure
    whether you want it or not? ...

    One website says: "Basal cell skin cancer occurs on the face, scalp,
    ears, hands, shoulders and back."

    If sunlight has nothing to do with skin cancer, people would also have
    to watch their ass.

    --
    Ron

    How do you explain melanomas which predominate on the back.

  13. TC said:

    How do you explain melanomas which predominate on the back.

    Second degree sunburns.

  14. TC said:
    Quoted message said:

    On Jul 10, 9:08 am, TC <[email hidden]> wrote:

    Quoted message said:
    Quoted message said:
    Quoted message said:

    On Jul 9, 6:55 pm, Tim <[email hidden]> wrote:
    What is the difference between sunburn and suntan? Not much. One is a
    slower "damage", one is a little faster "damage". Do either cause skin
    cancer? Doubt it.

    Quoted message said:
    Quoted message said:

    Let's see... go with your 'doubts' OR the advice of dermatologists/
    doctors...? Hmmmm... I think it's probably wiser to go the latter,
    with people who actually STUDY the effects, and say it's best to limit
    your exposure to early morning/very late afternoon sun (less than 30
    minutes will get you all the vitamin D you need) and keep the skin
    covered or try to stay out of it as much as possible the rest of the
    day.

    Quoted message said:
    Quoted message said:

    I don't want skin/face that looks like a prune.

    Quoted message said:

    Let's see.... go with what makes sense in the real world or go with
    what doesn't make sense in the real world.... hmmmmm?

    Makes sense is what I wrote above.

    Quoted message said:

    Dermatologists don't *study* sun, sun exposure and skin cancer. They
    study conditions and treatments. They treat patients and conditions
    according to what they've been taught in med school.

    Sure. There aren't any on the research side.

    Quoted message said:

    And virtually all
    the universities where medical doctors are taught the subject is
    heavily funded by either the food industry or the pharmaceutical
    industry or both.

    Everything is a conspiracy with you. No one is going to talk you out
    of your heavy meat and fat consumption, limited exercise, and basking
    in the sun.

    Quoted message said:

    Again here is what makes sense.

    Quoted message said:

    1) We evolved as an organism with the sun, why would moderate exposure
    over a lifetime become dangerous to us.

    "Moderate" sun exposure?

    Umm... you wrote, " What is the difference between sunburn and suntan?
    Not much. One is a slower "damage", one is a little faster "damage".
    Do either cause skin cancer? Doubt it."

    You're not defending "moderate". You're defending sunburn and
    suntan. "Moderate" is what I wrote above.

    Quoted message said:

    2) Skin cancers do not commonly occur on the parts of the body that
    gets the most exposure.

    Where are you getting these stats from?

    Quoted message said:

    3) The states where there is more chance of sun exposure has less skin
    cancers than states with less chance of sun exposure.

    Again, I don't know where you're getting your data, but let me say
    this. In the South, many people get out of the mid day sun because
    it's freaking hot. Up North, they can bask in the sun longer because,
    generally, it's cooler and the sun isn't as hot.

    Quoted message said:

    "When you have eliminated all which is impossible, then whatever
    remains, however improbable, must be the truth." (Sherlock Holmes)

    Okay, Sherlock...

    Patrick

  15. Quoted message said:
    TC said:
    Quoted message said:

    On Jul 10, 9:08 am, TC <[email hidden]> wrote:
    > On Jul 9, 6:55 pm, Tim <[email hidden]> wrote:
    > What is the difference between sunburn and suntan? Not much. One is a
    > slower "damage", one is a little faster "damage". Do either cause skin
    > cancer? Doubt it.
    Let's see... go with your 'doubts' OR the advice of dermatologists/
    doctors...? Hmmmm... I think it's probably wiser to go the latter,
    with people who actually STUDY the effects, and say it's best to limit
    your exposure to early morning/very late afternoon sun (less than 30
    minutes will get you all the vitamin D you need) and keep the skin
    covered or try to stay out of it as much as possible the rest of the
    day.
    I don't want skin/face that looks like a prune.


    Let's see.... go with what makes sense in the real world or go with
    what doesn't make sense in the real world.... hmmmmm?

    Makes sense is what I wrote above.

    Quoted message said:

    Dermatologists don't *study* sun, sun exposure and skin cancer. They
    study conditions and treatments. They treat patients and conditions
    according to what they've been taught in med school.

    Sure. There aren't any on the research side.

    Quoted message said:

    And virtually all
    the universities where medical doctors are taught the subject is
    heavily funded by either the food industry or the pharmaceutical
    industry or both.

    Everything is a conspiracy with you. No one is going to talk you out
    of your heavy meat and fat consumption, limited exercise, and basking
    in the sun.

    It is not a conspiracy and I've never put it in those terms. It is an
    economic and educational fact. It is quite naive to think that these
    universities would not serve thsoe that either paid to create them
    initially or are now currently paying to fund them. They are not
    independent from those who fund them. And pharma pays billions for
    research that keep most of the universities financially afloat. That
    is the simple reality.

    Quoted message said:


    Quoted message said:

    Again here is what makes sense.
    1) We evolved as an organism with the sun, why would moderate exposure
    over a lifetime become dangerous to us.

    "Moderate" sun exposure?

    Umm... you wrote, " What is the difference between sunburn and suntan?
    Not much. One is a slower "damage", one is a little faster "damage".
    Do either cause skin cancer? Doubt it."

    You're not defending "moderate". You're defending sunburn and
    suntan. "Moderate" is what I wrote above.

    Quoted message said:

    2) Skin cancers do not commonly occur on the parts of the body that
    gets the most exposure.

    Where are you getting these stats from?

    It is a fact. Check any resource you wish to. Try Google. Melanomas
    are more commonly found on the back. Why is Melanoma not more commonly
    seen on the face or the hands, where we sunburn the most? If skin
    cancer is caused by sun exposure, then we should see skin cancers
    mostly where the skin is more exposed. Right? The face and the hands,
    right? Simple cause and effect. Sun exposure causes sin cancer
    therefore skin cancers should occur on the skin that gets the most sun
    exposure, the face and the hands, right? That is simply not the case.

    Quoted message said:


    Quoted message said:

    3) The states where there is more chance of sun exposure has less skin
    cancers than states with less chance of sun exposure.

    Again, I don't know where you're getting your data, but let me say
    this. In the South, many people get out of the mid day sun because
    it's freaking hot. Up North, they can bask in the sun longer because,
    generally, it's cooler and the sun isn't as hot.

    Nonsense. The fact is that there are more sunny days and more
    sunworshippers Florida and California and the people that work
    outdoors will get more sun and more intense sun than people in
    Washington state and in Maine. Yet, there is more skin cancer in Wash.
    state and Maine than in California and Florida.

    http://apps.nccd.cdc.gov/uscs/Table.aspx?Group=3f&Year=2002&Display=n

    Here is the results of a few quick data searches.

    Age-Adjusted Invasive Cancer Incidence Rates for the 10 Primary Sites
    with the Highest Rates within Race- and Ethnic-Specific Categories
    (Table 3.27.MF1)
    Rates are per 100,000 persons and are age-adjusted to the 2000 U.S.
    standard population (19 age groups - Census P25-1130).

    Melanomas of the skin - male and female - white

    Massachusetts - 21.5
    Seattle - 24.7
    Rhode Island - 27.4
    New Hampshire - 27.3
    Connecticut - 21.3

    Texas - 12.8
    California - 20.4
    Florida - 17.0
    Louisiana - 13.2
    New Mexico - 17.7

    As you can see the numbers show that people further north have more
    skin cancers than those from the states known for a lot of sun. People
    flock to the southern states specifically for the sun.

    Quoted message said:


    Quoted message said:

    "When you have eliminated all which is impossible, then whatever
    remains, however improbable, must be the truth." (Sherlock Holmes)

    Okay, Sherlock...

    Patrick

    Sometimes the reality differs from the reported. And an advanced
    degree does not guarantee true intelligence. Simple observations
    overule book learning.

  16. TC said:
    Ron Peterson said:

    If sunlight has nothing to do with skin cancer, people would also have
    to watch their ass.

    Quoted message said:

    How do you explain melanomas which predominate on the back.

    I am not sure that your information is correct. What needs to be
    compared is the incidence of melonomas per unit area. The back is a
    very large area.

    Many people don't keep their backs covered when sunbathing or working
    outside.

    There is some variation in skin cancer rates on various body areas,
    but exposure to sunlight seems to dominate other causes. Tar and some
    other chemicals can increase the incidence of skin cancer.

    http://www.napa.ufl.edu/2002news/cheladerm.htm has an interesting
    theory about the mechanism of sunlight on causing skin cancer.

    --
    Ron

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