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So wearing protective clothing is your best bet it seems.
that guy wrote:
> Here's an article to the contrary.
> Trash Your Sunscreen and Other Summer Sun Tips
> *By Dr. Joseph Mercola
> with Rachael Droege*
> It may seem like second nature to you to apply sunscreen before going out in
> the sun, as the media has been bombarding Americans with reports of the
> dangers of the sun for some time now, but using sunscreen is not a good way
> to limit your sun exposure.
> Having concerns about skin cancer is valid, however, as its incidence in the
> United States has tripled in recent years to 54,000 cases annually, but
> sunscreen is one of the LAST things you want to put on your body, and sunblock
> does not stop skin
> Sunscreen is a toxic chemical that can cause problems in your system and
> increase your risk of disease.
> The FDA regulates sunscreen as an over-the-counter drug because it contains
> "active" ingredients. Following is a list of active ingredients in sunscreen
> that the FDA classified as GRASE (generally regarded as safe and effective):
> - Para Amino benzoic acid (PABA)
> - Avobenzone
> - Cinoxate
> - Dioxybenzone
> - Homosalate
> - Menthyl anthranilate
> - Octocrylene
> - Octo methoxycinnamate
> - Octyl salicylate
> - Oxybenzone
> - Padimate O
> - Phenylbenzimidazole
> - Sulisobenzone
> - Titanium dioxide
> - Trolamine salicylate
> - Zinc oxide
> *Potential Toxicity
> Whether some of these ingredients are toxic is controversial and there are
> studies <http://www.mercola.com/2000/oct/15/sunscreen.htm> on either side of
> the issue. But recently, a study in the April 2004 Journal of
> that there is significant penetration of all sunscreen agents they
> studied into the skin, and oxybenzone and metabolites across the skin.
> So at best when you use sunscreen your body is absorbing synthetic
> chemicals, and with experts' recommendations to apply generous amounts of
> the product every few hours, you will likely be absorbing a fair amount. It
> is hard to believe that all of these chemicals will not have any effect on
> your system. Titanium dioxide and zinc oxide, which act as physical barriers
> that reflect UV rays, may be less problematic in terms of absorption.
> Even though up until now studies on the potential toxicity of sunscreens are
> sparse and not definitive, I believe it is wise to reduce your exposure to
> synthetic chemicals as much as possible and I don't recommend using
> sunscreens at all.
> *Sunscreen and Vitamin D
> There is another major problem with sunscreen aside from the potential
> chemical toxicity and that is it blocks your skin's ability to make vitamin
> D by more than 95 percent. If you've been reading the site then you are
> familiar with the importance of having optimal vitamin D
> know that regular sun exposure is the best way to achieve this.
> Rather than burying your skin in sunscreen, it is clearly important to get
> regular sun exposure in order to have optimum health.
> *Sun Safety Without Sunscreen*
> This does not mean that we should all go out and get as much sun as we
> want--you must exercise caution and avoiding a burn is key.
> At the beginning of the season, go out gradually and limit your exposure to
> perhaps as little as 10 minutes a day. Progressively increase your time in
> the sun so that in a few weeks you will be able to have normal sun exposure
> with little risk of skin cancer. You can further avoid the damage from the
> sun by staying out of the sun during the harmful times from 10 a.m. to 2 p.m.
> You can stay in the shade during this time or wear lightweight long sleeve
> shirts, long pants and a wide-brim hat.
> If you are looking to give yourself further protection against skin cancer,
> along with not getting sunburned diet is undoubtedly important.
> In 2001, the National Academy of Sciences published a comprehensive
> review<http://www.pnas.org/cgi/content/full/98/13/7510>showing that
> the omega 6:3 ratio was the key to preventing skin cancer
> development. I believe that it is the worsening omega-3:6 ratios that are at
> least partly responsible for the rise in skin cancer rates.
> Omega-3 and omega-6 fats are both essential for human health, however the
> typical American consumes far too many omega-6 fats in their diet while
> consuming very low levels of omega-3. While the ideal ratio of omega-6 to
> omega-3 fats is 1:1, our ratio of omega-6 to omega-3 averages from 20:1 to
> The primary sources of omega-6 are corn, soy, safflower and sunflower oil;
> these oils are overabundant in the typical diet, which explains our excess
> omega-6 levels. Avoid or limit these oils.
> Meanwhile, omega-3 fats, found in fish oil and cod liver
> need to be increased.
> A major part of the problem is that at the beginning of 1900 we had very
> little processed vegetable oils <http://www.mercola.com/2001/aug/1/oil.htm>,
> which are virtually 100 percent omega-6 fat, in our diet. In the last 100
> years the U.S. population has gone from consuming virtually no vegetable
> fats to consuming more than 70 pounds per year. It is likely this
> unnaturally high consumption of omega-6 fats that is totally distorting the
> important omega 6:3 ratio.
> So as I mentioned above, it is vital to reduce the omega-6 vegetable oils in
> your diet as much as possible while increasing the amount of beneficial
> omega-3 fats. This is an incredibly important way to prevent skin cancer and
> it is spelled out quite clearly in a 2000 Cancer Research
> "Epidemiological, experimental, and mechanistic data implicate omega-6 fat
> as stimulators and long-chain omega-3 fats as inhibitors of development and
> progression of a range of human cancers, including melanoma."
> Additionally, consuming many whole vegetables will increase antioxidant
> levels in the body, which will provide protection against any sun-induced
> radiation damage. Eating the right vegetables for your metabolic
> type<http://www.mercola.com/2003/feb/26/metabolic_typing.htm>will give
> you the best results, of course.
> So if you want to benefit from the sun this summer, and I sincerely hope you
> do, throw away your sunscreen and use practical methods like clothing and
> shade to protect your skin from the sun when necessary. Always avoid getting
> burned, but be sure to get some sun on your skin. Complete avoidance of the
> sun is a surefire way to cause some problems for yourself down the road.
> *Related Articles:*
> Sun-Care Chemical Proves Toxic in Lab
> Slathering on Sunscreen Does Not Prevent
> Learn Why the Myth of the Sun Causing Skin Cancer Can Hurt Your
> Let the Sun Shine In (Especially When
> Test Values and Treatment for Vitamin D
> Why You Need to Have Your Vitamin D Level Tested
> On 4/29/05, Paul Magnanti <firstname.lastname@example.org> wrote:
>>>>already see the lines in her face. I think where
>>you >>are and how sunny
>>>>your area is makes a big difference.
>>Genetics can help as well. Having skin that is
>>naturally oil was the bane of my existence as a
>>teenager...but if Dad's side of the family is any
>>indication it will mean nice, smooth skin for a quite
>>a while. Great-grandma was that way when she passed
>>away. A roll of the the genetic dice means I tan
>>easily as well.
>>Having said all that, still wear long sleeved shirts
>>and a big hat when hiking in the high country with
>>lots of UV radiation....
>>The true harvest of my life is intangible.... a little stardust caught, a
>>portion of the rainbow I have clutched
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