One Big Reason We Need Sun Exposure
The ‘Sunshine Vitamin’ is linked to lowering your risk of several forms of cancer and many other diseases.
Exposure to UVB present in sunshine and in most tanning beds is the body’s natural way to produce vitamin D, accounting for 90 percent of vitamin D production.
1 Dietary “Supplements” are just that: Supplemental ways to produce vitamin D.
2.What’s more, research has shown that people who utilize indoor tanning equipment that emits UVB – which most tanning equipment does – also produce vitamin D. And studies have also shown that indoor tanning patrons have higher vitamin D blood levels than non-tanners.
3.While the North American indoor tanning industry promotes itself as a cosmetic service, one undeniable side-effect of that cosmetic service is vitamin D production. Even though it may not be necessary to develop a tan to produce vitamin D, this should also be considered:
There is growing consensus that humans may not be able to get enough vitamin D through dietary supplements alone (especially if recommended vitamin D levels are raised, as is widely anticipated, from 200-600 IU daily to 1,000-2,000 IU) and growing acceptance of moderate sun exposure as the best, cheapest, most widely available and most natural source. (In comparison, an 8-ounce glass of whole milk is fortified with just 100 IU of Vitamin D).
Further, because research suggests that the risks associated with sun exposure are most likely related to intermittent sunburns, it is credible to believe that the benefits of regular, moderate non-burning exposure outweigh the easily manageable risks associated with overexposure.
New research has shown that vitamin D deficiency is epidemic in American adults today, suggesting that up to 90 percent of North Americans are vitamin D deficient and that vitamin D deficiency has significant implications on human health.
4. Indeed, two world-wide conferences on Vitamin D were convened in 2006 in North America, with universal consensus that Vitamin D deficiency is a real problem. As a result of those conferences, the American Cancer Society and the Canadian Cancer Society – which had both preached sun abstinence for years – both recognized for the first time in May 2006 that some sunlight is necessary for human health.
5.It is likely that over-usage of sunscreen in climates and seasons when sunburn is not a possibility — sunscreen almost completely prevents vitamin D production — has contributed to this problem. This is especially significant because:
Want to know what tanning beds can make you healthy click here
A 2006 systematic review of 63 studies on vitamin D status in relation to cancer risk has shown that vitamin D sufficiency may reduce one’s risk of colon, breast and ovarian cancers by up to 50 percent.
6. In elderly individuals, such fractures are often deadly. Encouraging everyone to wear sunscreen all year long in any climate undoubtedly is contributing to this problem, as vitamin D is necessary for the body to properly process calcium.
7. Additionally, vitamin D deficiency is a leading cause of osteoporosis, a disease affecting 25 million Americans which leads to 1 million hip and bone fractures every year.
Vitamin D deficiency most likely plays a role in the development of muscular sclerosis, according to the Calgary based charity Direct-MS. (You can learn more about this by visiting www.direct-ms.org.
Vitamin D deficiency is also believed to be linked to an increased risk of prostate cancer and even heart disease.
Actually it's not a vitamin. The fat-based seco-steroid hormone that skin produces with sun exposure has shown a long list of benefits.
The Vitamin D Council, a nonprofit organization in Atascadero, Calif., led by Dr. John J. Cannell, links about 65 diseases, conditions or health problems to a vitamin D deficiency. Lack of vitamin D is a major factor in the pathology of at least 17 varieties of cancers including breast and prostate cancers, heart disease, stroke, hypertension, autoimmune disease, diabetes, depression, chronic pain, osteoarthritis, osteoporosis, muscle weakness, muscle wasting, birth defects and periodontal disease, the council states.
"In humans, vitamin D is critically important for the development, growth and maintenance of a healthy body, from birth until death," the council says on its Web site, www.vitamindcouncil.org.
It suggests 50 to 80 nanograms per milliliter of vitamin D in the blood year round. Dr. Cannell said people who do not get regular daily sun exposure need 5,000 international units a day of vitamin D -- more than 12 times the current recommended 400 IU daily allowance. Those amounts can be achieved with a conservative regimen of sun exposure.
"The older the skin the less effective and efficient the skin is in making vitamin D," he said. "If you are 70, you have to stay out in the sun twice as long as someone who is 30 to produce the same amount of vitamin D." He said people rightfully are jaded by claims of health benefits from vitamins. "Many do not turn out to be true, so they hear about vitamin D and they will not fall for it again," Dr. Cannell said.
But volumes of research are proving vitamin D's importance. Natural production of vitamin D3 cholecalciferol in the skin "is the single most important fact every person should know about vitamin D -- a fact that has profound implications for the natural human condition," the Vitamin D Council states.
Four additional resources for more information and research on Vitamin D are:
www.uvadvantage.com
www.vitaminDcouncil.com
www.sunarc.org
www.qualitycounts.com/fpvitamind.html
Additionally, a new Canadian Group, the Vitamin D Society, has been launched in 2006 to educate Canadians about Vitamin D deficiency and fund new Vitamin D research. Its web site is www.vitaminDsociety.org.
“Current research indicates Vitamin D deficiency plays a role in causing 17 varieties of cancer, heart disease, stroke, hypertension, autoimmune diseases, diabetes, depression, chronic pain, osteoarthritis, osteoporosis, muscle weakness, muscle wasting, birth defects and periodontal disease,” the Vitamin D Council writes on its web site. “This does not mean that vitamin D is the only cause of these diseases, or that you will not get them if you take vitamin D."
What it does mean is that vitamin D, and the many ways in which it affects a person’s health, can no longer be overlooked by the healthcare industry nor by individuals striving to maintain, or achieve, a greater state of health.”
While public health officials have floundered at how to craft a message that recognizes the both the benefits of sunlight and the risks of overexposure, the professional indoor tanning industry has for more than a decade promoted a balanced message about sunlight.
The tanning industry’s core belief: Moderate tanning, for individuals who can develop a tan, is the smartest way to maximize the potential benefits of sun exposure while minimizing the potential risks associated with either too much or too little sunlight.
Sunburn prevention — not sun avoidance — is the key.
(NaturalNews) People still don't get it: Vitamin D is the "miracle nutrient" that activates your immune system to defend you against invading microorganisms -- including seasonal flu and swine flu. Two months ago, an important study was published by researchers at Oregon State University.
This study reveals something startling: Vitamin D is so crucial to the functioning of your immune system that the ability of vitamin D to boost immune function and destroy invading microorganisms has been conserved in the genome for over 60 million years of evolution.
As this press release from Oregon State University (http://www.eurekalert.org/pub_relea...) explains:
The fact that this vitamin-D mediated immune response has been retained through millions of years of evolutionary selection, and is still found in species ranging from squirrel monkeys to baboons and humans, suggests that it must be critical to their survival, researchers say.
"The existence and importance of this part of our immune response makes it clear that humans and other primates need to maintain sufficient levels of vitamin D," said Adrian Gombart, an associate professor of biochemistry and a principal investigator with the Linus Pauling Institute at Oregon State University.
The announcement goes on to explain:
In primates, this action of "turning on" an optimal response to microbial attack only works properly in the presence of adequate vitamin D, which is actually a type of hormone that circulates in the blood and signals to cells through a receptor. Vitamin D is produced in large amounts as a result of sun exposure, and is available in much smaller amounts from dietary sources.
Vitamin D prevents the "adaptive" immune response from over-reacting and reduces inflammation, and appears to suppress the immune response. However, the function of the new genetic element this research explored allows vitamin D to boost the innate immune response by turning on an antimicrobial protein. The overall effect may help to prevent the immune system from overreacting.
Without vitamin D, you're a sitting duck
What this study reveals is that without sufficient levels of vitamin D circulating in your blood, you're a ripe, juicy target for influenza (H1N1 or otherwise). If you lack vitamin D, your immune system can't "activate" to do its job. That's why people who are deficient in vitamin D so frequently get winter colds.
But people who are high in vitamin D have the nutritional power to activate their immune system so that it can respond to invading pathogens. Crucially, vitamin D also manages to balance immune response and prevent inflammation -- the leading cause of death in the 1918 influenza pandemic.
So not only does vitamin D protect you from the initial infection; it also prevents your body from over-reacting and killing you with inflammation (which typically gets expressed as bacterial pneumonia, an infection of the lungs).
Vitamin D Comes From the Sun
Sunlight is the best and only natural source of vitamin D. Unlike dietary or supplementary vitamin D, when you get your ‘D’ from sunshine your body takes what it needs, and de-metabolizes any extra. That’s critical – as vitamin D experts and many health groups now advocate 1,000 to 2,000 IU of vitamin D daily – five to ten times the old recommendations. Because too much ‘D’ from dietary supplements may cause the body to over-process calcium, nobody really knows for sure how much supplementary vitamin D is safe. On the other hand, sunlight-induced vitamin D doesn’t have that problem – it’s the way your body is intended to make it!
| Sunlight Exposure (full body exposure)* | 3,000 – 20,000 IU |
| Salmon (3.5 oz. of fresh, wild salmon) | 600 – 1,000 IU |
| Salmon (3.5 oz. of fresh, farmed salmon) | 100 – 250 IU |
| Fortified Whole Milk, 8-oz. glass** | 100 IU |
| Fortified Multi-vitamin | 400 IU |
Source: Holick, MF. Vitamin D Deficiency. New England Journal of Medicine, July 2007
* Sun exposure to the arms and legs for 10-15 minutes. The amount of vitamin D produced depends on the intensity of the UVB in the sun and many other factors. Darker-skinned individuals may need 5-10 times more exposure than a fair-skinned person to make the same amount of vitamin D. In northern climates sunlight is too weak in parts of the year to make any vitamin D – a period referred to as ‘Vitamin D Winter’.
Smart people today are doing two things:
1) Saying NO to vaccines.
2) Saying YES to vitamin D.
If you take vitamin D, you don't need a vaccine!
Sources for vitamin D
Where can you get vitamin D? There's some vitamin D naturally present in fish oils and marine omega-3 oils, but the two most abundant sources are:
1) Sunlight
2) Vitamin D supplements
You can get sunlight for free by exposing your skin to the sun. You can get vitamin D supplements at www.Vitacost.com or just about any vitamin retailer (local or online).
Vitamin D is easy to get. Your body actually manufactures it when you're exposed to the sun.
Why no vitamin D advice?
The research supporting vitamin D's ability to halt influenza is overwhelming. And yet the vaccine industry (and the doctors who push vaccines) don't want you to know about vitamin D. Why is that?
It's because if people knew the truth about vitamin D, the vaccine industry would collapse. Who needs a vaccine if you're got a powered-up immune system to do the job automatically? Plus, your immune system is natural, while vaccines are completely unnatural injections of toxic chemicals that are increasingly being linked to not just autism, but seizures, brain damage and death.
Why risk a vaccine when vitamin D is so remarkably safe?
You'll need at least 4000 IU a day just to prevent deficiency, according to many nutrition experts. Some people I know take 8000 IU a day. I personally don't take any vitamin D but I get at least 30 minutes of sunlight every day near the equator (which is a unique geographical situation, I understand, that not everybody can replicate).
Our national "health" officials (if you can call them that) are making a crucial mistake with the swine flu. Instead of ordering more vaccines, they should be recommending vitamin D supplements to the population. For less than the cost of the vaccines, we could provide vitamin D supplementation to every man, woman and child in America. We would not only end the swine flu pandemic, we would also see cancer rates plummet!
Perhaps that's why our health authorities don't dare recommend vitamin D -- the financial impact on the cancer industry would just be too great. The vaccine makers would lose billions, and the cancer industry could lose tens of billions. Diabetes rates would fall, depression would fade away in many people, kidney function would improve and a long list of other diseases would be prevented or reversed following adequate vitamin D intake.
Vitamin D is the answer to our national health care problems. Just one nutrient, if distributed freely to everyone, could probably slash our national health care costs by one-third within five years, I believe.
And yet they dare not mention it. "It's not approved by the FDA," they say. So the CDC won't mention it. The WHO won't recommend it. The FDA pretends it doesn't exist, and the doctors aren't allowed to prescribe it.
Here it is -- vitamin D -- the great CURE for influenza. It's here right now. It's cheap, it's safe, and it's available. Yet it's being utterly ignored.
Let me go on the record to state the obvious: There is an agenda under way to keep the American people deficient in vitamin D and ignorant about its healing properties.
This is a conscious, planned scheme that seeks to keep the people disinformed while pumping them full of vaccines, chemotherapy and prescription drugs instead of teaching them the simple nutritional cures that exist right now.
Mark my words: With the swine flu or any future pandemic, the populations suffering the highest death rates will be those with the highest rates of vitamin D deficiency. And the vaccine? It offers no protection compared to the power of the vitamin D.
Watch this Dr. Mercola describes the Cancer link between Vit. D defiency.
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1Holick MF. Sunlight and vitamin D for bone health and prevention of autoimmune diseases, cancers and cardiovascular disease. Am J Clin Nutr. 2004: 80(6 Suppl); 1678S-1688S
2Vin Tangpricha, Adrian Turner, Catherine Spina, Sheila Decastro, Tai C Chen and Michael F Holick. Tanning is associated with optimal Vitamin D status (serum 25-hydroxyvitamin D concentration) and higher bone mineral density. Am J Clin Nutr 2004; 80:1645-9.
3Holick MF. High Prevalence of Vitamin D Inadequacy and Implications for Health. Mayo Clinic Proceedings. March 2006; 81(3): 353-373.
4Garland CF, Garland FC, Gorham ED, Lipkin M, Newmark H, Mohr SB, Holick MF. The Role of Vitamin D in Cancer Prevention. Am J Pub Health. 2006, Vol. 96 No. 2; 9-18.
Hundreds of additional research references can be found in these four papers.
How Your Skin Tans
Posted: Friday, January 18th, 2008
Tanning 101: How Your Skin Tans and Why It’s Natural
Tanning is the human body’s natural and intended response to ultraviolet light exposure. Throughout human evolution a tan has served as the body’s natural acquired protection against sunburn and overexposure. Today we know that a suntan achieved in a non-burning fashion, combined with proper use of sunscreen outdoors when sunburn is a possibility, is the best way to maximize the potential benefits of regular sun exposure while minimizing the risks that are associated with overexposure.
This section will explain how your skin develops a tan by first introducing ultraviolet light, introducing parts of the skin and then showing how UV light works with the skin to develop a tan.
Part 1: Understanding UV Light
Natural light actually is composed of energy waves that are transmitted 93 million miles from the sun to the Earth. Each energy wave (or light ray) occurs in a different part of a complex light spectrum based on its length in nanometers (nm), which is one-billionth of a meter.
Light is energy.
Light travels in waves.
Different forms of light are differentiated by the length of the waves – the wavelength.
That means that no two types of light are the same. For example, ultraviolet light used in tanning salons cannot possibly be the same as an X-ray because of the difference in the length of their energy waves. Therefore, these two waves will behave and affect the human body in completely different ways.
For our purposes, let’s divide light into three categories: infrared, visible and ultraviolet. Not all light waves reach Earth, however. Many are filtered out by the atmosphere, which protects us from harmful rays. The light waves that tan people are invisible, but let’s briefly look at all three categories for comparison.
Infrared Light: Infrared waves (above 700nm) include electric waves, radio waves, infrared and shortwave infrared, but only this last type reaches the Earth. Shortwave infrared waves, which give us heat, make up about 49 percent of the solar radiation we receive on Earth.
Visible Light: Visible rays (400nm to 700nm) cause illumination we can see as colors, including red, yellow, green, blue and violet. These account for about 46 percent of the Earth’s solar radiation.
Ultraviolet Light: Ultraviolet rays (200 nm to 400 nm) comprise the remaining 4 or 5 percent radiation we receive on Earth. Of all invisible rays—including cosmic rays, gamma rays, X-rays and three forms of ultraviolet light—only two of the ultraviolet light rays actually penetrate the Earth’s atmosphere. These are the same two invisible light rays used in tanning equipment.
Ultraviolet light rays are energy waves that are shorter in length than visible light rays. Because of this, the human eye cannot see ultraviolet light. However, we can see the effects of ultraviolet light, such as tan skin, on the human body. Three categories of ultraviolet light exist:
Ultraviolet A. UVA rays are the longest (320nm to 400nm).
Ultraviolet B. UVB rays are shorter than UVA rays (290nm to 320nm).
Ultraviolet C. UVC rays are the shortest (200nm to 290nm).
Of these three categories of UV rays, only UVA and UVB pass through the Earth’s atmospheric filter. More UVA hits Earth than UVB because the filter prevents the passage of shorter wavelengths of UVB that resemble UVC. If UVC light also passed through, it would have devastating effects on this planet, which is why the depletion of the ozone layer in the atmosphere is of great concern.
UVA and UVB light waves cause skin to tan. As previously mentioned, these same light rays can be replicated in special lamps used in tanning equipment. How they work together to create a suntan is a process we’ll discuss after we introduce the parts of the skin.
UV Concentration in Sunlight
The ultraviolet portion of outdoor sunlight is approximately 95 percent UVA and 5 percent UVB, although atmospheric, seasonal and geographic variables change that ratio each time you step outside.
So although UVA is the predominant ultraviolet light ray in sunshine that hits Earth, there is still an important percentage of UVB in sunshine.
Today’s indoor tanning units utilize a carefully controlled mix of both rays to help prevent indoor tanners from burning as easily or as quickly as they could by tanning outside, and also to create cosmetic tans in a controlled environment that minimize the risk of sunburn.
Note that we said that outdoor light is approximately 95 percent UVA and 5 percent UVB. The problem with stating this exactly is that the percentage of UVA and UVB outdoors is always changing. Here is why:
The earth’s ozone layer is an invisible barrier that protects us from many forms of radiation from the sun that would otherwise harm us. The ozone layer is just that – a layer. And, depending upon the angle in which sunlight hits the ozone layer, the ozone can block more or less UVB light.
At noontime, when the sun is highest in the sky, sunlight is hitting the ozone layer at a straight “up and down” angle. If you think of the light waves from the sun as arrows, it is easiest for those arrows to pierce the ozone layer when they are shot from a straight “up and down” angle. So at noontime, the ozone layer is least efficient at stopping the most intense rays, so more UVB light gets through near noon.
In contrast, in the late afternoon, when the sunlight is hitting the ozone layer on an angle, the ozone layer is thicker in relationship to the sun’s angle to your position. Because the layer is thicker, more UVB gets filtered out, so very little UVB hits your location late in the day. In fact, when the sun is on the horizon, virtually no UVB light is getting through the ozone to you at all.
At noon, more UVB gets through the ozone layer.
At dawn and dusk, virtually no UVB gets through the ozone, and all you receive is UVA light.
The other factor that affects the angle in which sunlight hits the ozone layer above your position is the time of year. In June, for example, the sun is higher in the sky in the Northern Hemisphere than it is in December, when the sun is very low in the sky in the Northern Hemisphere.
In December, very little UVB light penetrates the ozone layer in the Northern hemisphere because sunlight is hitting the ozone layer at a low angle, making the ozone more efficient.
In June, when the sun is high in the sky, the ozone is less efficient, which means more UVB light penetrates through to your position.
Very few people realize that UVA emissions outdoors are virtually unchanged throughout the year. That is because the ozone layer does not block UVA rays at all.
Why is the ratio of UVA to UVB important? While UVB is the portion of sunlight responsible for natural Vitamin D production in the body, it is also more intense than UVA light. Being more intense, UVB is significantly more effective at causing a sunburn than UVA, which is why noontime sunshine is more intense than sunshine at dawn or dusk.
Part 2: Understanding Your Skin
Skin is the largest organ in the human body. Weighing roughly nine pounds on the average adult, it protects the body from harmful pollutants found in air, water and other things people come in contact with every day. Skin performs many other functions, too. It helps regulate body temperature, houses sensory receptors that help you feel things and synthesizes various body chemicals necessary for life. That’s why the condition of the skin is so important to good health.
Skin has many sections, but it basically is divided into three layers:
The top layer, or epidermis, is the one that produces a tan.
The middle layer, or dermis, contains collagen and other elastic materials important to the skin’s strength, and to its ability to fight off infection and repair itself. Blood vessels, nerve fibers and other structures are embedded in this layer.
The bottom layer, or subcutaneous tissue, primarily is composed of fat that binds the skin to the body. Subcutaneous tissue serves as the body’s food reserve, insulation and shock absorber.
Skin cells in the epidermis are constantly reproducing and pushing older cells upward to the surface of your skin – an outer mantle of dead skin cells (sometimes called the horny layer) where they are sloughed off in about one month. There are three main types of cells in the epidermis:
Basal cells — the oblong cells that line the base of the germinative layer — are parent cells, giving “birth” to keratinocytes.
Keratinocytes are the “daughter” cells that serve as your skin’s sealant, making up most of your epidermis.
About 5 percent of the skin cells in the epidermis are special cells called melanocytes, which lie on the bottom of the epidermis. Melanocytes are pigment cells that help the skin tan.
Melanocytes produce melanin – a protein pigment which performs the very specific body function of protecting skin from overexposure to ultraviolet light. Thus, the presence of melanin in the skin colors it and protects it.
Everyone has roughly the same number of melanocytes in the body—about five million. Your body’s melanocytes naturally will produce a certain amount of melanin based on your heredity, which is why people have different skin colors. For example, the skin of African-Americans contains more melanin, creating a black or brown color, while the skin of Caucasians has less melanin and is pale.
UVA, UVB and the Tanning Process
Melanocytes are prompted to produce additional melanin whenever ultraviolet light waves touch them, thereby making the skin darker to protect the body from additional exposure. This produces a tan—literally, a browning of the skin. The color of the tan ultimately depends on heredity and previous exposure to ultraviolet light, two factors which predetermine the amount of melanin your skin will contain. This explains why some fair-skinned people can get dark tans and others cannot.
Of course, ultraviolet light can affect the skin in other ways. In excessive doses, it can cause sunburn – a reddening caused by the swelling or bursting of tiny blood vessels in the skin. Repeated burning is believed to be the greatest risk factor for long-term skin damage, which is why it is so important to prevent sunburn.
UVA and UVB waves have specific roles in the tanning process which are determined by their effects on skin. Although all ultraviolet light is capable of tanning skin, UVA is more efficient at certain functions in the tanning process and UVB is more efficient at certain parts of tanning. For instance, melanin produced when your skin is exposed to UV light is naturally pinkish in tone. But ultraviolet light also oxidizes the melanin, turning it brown.
UVB is more efficient at signaling melanocytes in your skin to begin producing more melanin.
UVA is more efficient at oxidizing the melanin your skin has already produced, turning it brown.
What Is Skin Damage?
You need to understand that technically, on the micro-level, any ultraviolet light exposure causes “skin damage.” But you also need to know that, on the macro-level, UV exposure is natural and necessary to lead a healthy life and simply calling UV exposure “damage” to your skin is more misleading than it is true.
What is sometimes called “damage” to the skin from non-burning UV exposure is actually just the skin’s way of protecting itself from sunburn. If your body can develop a tan, doing so is natural. It is what your body is designed to do. It is one of the ways your body protects itself.
Saying that UV light damages the skin, and therefore you should avoid UV light, is like saying that water causes drowning, and therefore you should avoid water. Just like water, we need UV light to live. So calling UV exposure “damage” is an oversimplification that misrepresents what your body as a whole is designed to do.
The sum of research conducted to date indicates that repeated overexposure and sunburning are the primary sun-related factors responsible for an increased risk of permanent skin damage. That’s why the prevention of sunburn and overexposure are so important.
Our Position Statement
Posted: Friday, January 18th, 2008
Smart Tanning: The Right Approach
Moderate tanning, for individuals who can develop a tan, is the smartest way to maximize the potential benefits of sun exposure while minimizing the potential risks associated with either too much or too little sunlight. Sunburn prevention - not sun avoidance - is the best and most natural approach for everyone.
This position is founded on the following tenets:
The professional indoor tanning industry promotes and teaches what we refer to as The Golden Rule of Smart Tanning: Don’t ever sunburn.
The indoor tanning industry has been more effective at teaching sunburn prevention than those who promote complete sun avoidance. Non-tanners sunburn more often than people who tan indoors.
More than 30 million North Americans patronize indoor tanning facilities at some point during the year. Every year, millions of indoor tanners successfully develop “base tans” before embarking on sunny vacations - tans that, combined with the proper use of sunscreen outdoors, help them prevent sunburn.
Public debate on this issue has completely lost the perspective that there are known physiological and psychological benefits associated with sunlight, that there are many other potential benefits that need further research, that the risks are manageable for anyone who has the ability to develop a tan and that, for many people, the benefits of sun exposure outweigh the risks associated with overexposure.
A tan is the body’s natural protection against sunburn. Your skin is designed to tan as a natural body function, and the body is designed to repair sun damage as a natural process.
The professional indoor tanning salon industry is part of the solution in the ongoing battle against sunburn and in teaching people how to identify a proper and practical life-long skin care regimen.
