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Does Vitamin D Improve Brain Function?

New studies show low vitamin D levels may impair cognitive function
Oct 29, 2009 |By Diane Welland

The push to prevent skin cancer may have come with unintended consequences—impaired brain function because of a deficiency of vitamin D.

The “sunshine vitamin” is synthesized in our skin when we are exposed to direct sunlight, but sunblock impedes this process.
And although vitamin D is well known for promoting bone health and regulating vital calcium levels—hence its addition to milk—it does more than that. Scientists have now linked this fat-soluble nutrient’s hormonelike activity to a number of functions throughout the body, including the workings of the brain.

“We know there are receptors for vitamin D throughout the central nervous system and in the hippocampus,” said Robert J. Przybelski, a doctor and research scientist at the University of Wisconsin School of Medicine and Public Health.
“We also know vitamin D activates and deactivates enzymes in the brain and the cerebrospinal fluid that are involved in neurotransmitter synthesis and nerve growth.” In addition, animal and laboratory studies suggest vitamin D protects neurons and reduces inflammation.

Two new European studies looking at vitamin D and cognitive function have taken us one step further. The first study, led by neuroscientist David Llewellyn of the University of Cambridge, assessed vitamin D levels in more than 1,700 men and women from England, aged 65 or older. Subjects were divided into four groups based on vitamin D blood levels: severely deficient, deficient, insufficient (borderline) and optimum, then tested for cognitive function.

The scientists found that the lower the subjects’ vitamin D levels, the more negatively impacted was their perform­ance on a battery of mental tests. Compared with people with optimum vitamin D levels, those in the lowest quartile were more than twice as likely to be cognitively impaired.

A second study, led by scientists at the University of Manchester in England and published online this past May, looked at vitamin D levels and cognitive performance in more than 3,100 men aged 40 to 79 in eight different countries across Europe. The data show that those people with lower vitamin D levels exhibited slower information-processing speed. This correlation was particularly strong among men older than 60 years.

“The fact that this relationship was established in a large-scale, clinical human study is very important,” Przybelski says, “but there’s still a lot we don’t know.”

Although we now know that low levels of vitamin D are associated with cognitive impairment, we do not know if high or optimum levels will lessen cognitive losses. It is also unclear if giving vitamin D to those who lack it will help them regain some of these high-level functions.

Because cognitive impairment is often a precursor for dementia and Alzheimer’s disease, vitamin D is a hot topic among Alzheimer’s scientists, who are racing to answer these questions. Przybelski, for example, is planning a study of vitamin D supplements in healthy, normal elderly adults living in an assisted-living community to see if it will affect their incidence of Alzheimer’s in the long term.

So how much is enough vitamin D? Experts say 1,000 to 2,000 IU daily—about the amount your body will synthesize from 15 to 30 minutes of sun exposure two to three times a week—is the ideal range for almost all healthy adults. Keep in mind, however, that skin color, where you live and how much skin you have exposed all affect how much vitamin D you can produce.

This article was originally published with the title "Does D Make a Difference?."

http://www.scientificamerican.com/article/does-d-make-a-difference/

 



Sun and health

by Myhouseinparadise ( MHIP )

If you have a doubt regarding the contence of this text please ask for scientifical articles or references.

Most people have suboptimal levels of the vitamin D and that causes degeneration, cognitive decline, premature aging, loss of vitality and development of degenerative diseases like cancer, dementia, Alzheimer's disease, multiple sclerose, heart disease, type 1 diabetes, hearing loss, ....

Optimizing vitamin D levels means health, mental and physical improvements and recovering and getting younger and more vital.
Not because it can really make you much younger and more vital, but because you were older and lost vitality in the first place.
90 % of vitamin D has to come from exposure to the sun.
Producing sufficient vitamin D in an effective way is a technique.
It is not very complex, but most people simply have no clue and make very serious mistakes.




Sun is healthy, even necessary for good health.
Too much sun is less severe than not enough sun ( even regarding cancer and skin cancer ).
Our body is able to handle too much sun, not so too less sun.
If you have skin cancer running in your family ( family history ) you should take much more care but still need the sun exposure.

We think you did not had too much sun unless you feel some discomfort ( at the moment or later ).
If you feel discomfort do moderate the days after ( or start all over the adapting process ).
Too much sun provides you clear warning signals ( pay attention to them until you are fully adapted to the exposure ) while not enough sun does not provide clear warning signals.
Fair skinned people have to pay more attention and adapt longer.
People with dark skin have to adapt to strong sun as well and get sunburn too if they are not adapted.

If there is a risk to get seriously sunburnt and you can not avoid the serious sunburn for sure use sunscreen.
If you use sunscreen make sure you cover all parts ( do not forget your ears (top), forehead, neck, shoulders, nose and top of feet )
( use sunscreen even a few cms under your clothes ) ( even slightly bolding persons should use a hat or cap ).
If you use sunscreen, and want it to fully protect you, then use it at least minutes before
you go in the sun and before you sweat and before you go in the pool.
Avoid a long beach buggy ride ( prefer a covered 4x4 ).
Better to simply avoid the midday sun ( and have a nice siesta ) or stay in the shadow than to use sunscreen.
Better to adapt and protect naturally slowly day by day than to use sunscreen.
Do not use too dark sunglasses.
Pay attention to signals of your body that warn you.
Rub your skin with your hand to feel if it starts hurting ( sunburn ).
If you are sensitive go out of the sun and wait to check if you already got sunburn.
Even if you are in the shadow (but close to where the sun shines) you can get sunburn (rub your skin).
Even when the sky is clouded you can get sunburn (rub your skin).
If you are in a pool the bodypart that is underwater does not burn (easily) but the part that is above burns more easily.
Use a cap or hat when you stay extended periods in the water or rest in a shadow you can find.
Use a cap or hat while you walk , it will protect your eyes and nose (and bolding people).
Put an alarm (cell phone or friend) if there is a risk to fall asleep in the sun.
Use a simple hydradant ( hydrating creme ) on your exposed skin before entering long haul flights.
Drink sufficient water (nip regularly) and limit alcohol and avoid heavy meals.
Buy a water after you passed security control.
Fill it up when you can or buy more while on the plain.
If you like a lot of sun, compensate your additional risk with more exercise (while you take sun) and limited meals and use healthy food.
Eat fruits ( The North East of Brazil bus especially the North East of Rio Grande do Norte has the best fruits in the world )
Prepare for your holiday abroad by walking outdoor or exercising outdoor ( even if it is cold and clouded ) avoid the use of lamps.
Sleep well covered ( adapt to sleeping in the heat ).

Do not look directly in the sun or even close to it for a long time ( like minutes or hours ),
like while driving towards the sun, kite surfing in the direction of the sun or looking to a kite or birds (your eyes too must adapt to the sun just as your skin).
If you do, pay attention to your eyes from time to time ( cover your eyes with your hands to pay attention how they feel ).
Do not take too long or hot showers when the water is chlorinated ( skin cancer and other cancers ).




Sun on your skin migrates T cells to the skin. T cells in the skin cure the skin ( and probably melanoma ).
T-cells are the immune cells that destroy damaged and infected cells, and they also regulate other immune cells.
Vitamine D from food is much less effective in migrating and attracking T cells to the skin and cannot cause levels high enough necessary to migrate T cells to the skin ( not even combined with supplements ).
So if you want T cells to migrate to the skin to cure it, you need sunshine exposure ( food and food supplements do not do the job ).

***

Vitamin D generated by sunlight may help protect the skin from cellular damage, including damage caused by sunlight itself, suggests a new study published in this week's Nature Immunology ( http://www.nature.com/ni/index.html ).
The researchers found that dendritic cells can convert vitamin D3 -- generated under the skin by sunlight -- into its active hormonal form, and induce T cells to migrate to the skin.
...
"We may eventually find that the T cell response is protective in some way against skin cancer."
...
Vitamin D2, the primary nutritional form of the prohormone, was much less effective in inducing CCR10 expression in T cells than vitamin D3, the sun-induced version.
"... sunshine may be good for your immune system," Sigmundsdottir concluded.
"This is what attracts T cells to the skin."
...
The new study determined, however, that the levels of vitamin D needed to initiate a T cell response exceed those found in normal serum, even when taking supplements.
"This suggests that UV production ( MHIP : production of vitame D caused by exposure to sun ) -- leading to the high local vitamin D levels -- is necessary," said James Fleet
( http://www.purdue.edu/aging/people/faculty/fleet.htm ) of Purdue University in West Lafayette, Ind., who studies nutrition and vitamin D.



Vitamin D and the Cancer Connection

by Hans R. Larsen, MSc ChE

http://www.yourhealthbase.com/vitamin_D.htm

A team of Dutch and Swiss researchers recently reported that vitamin-D deficiency is widespread in Europe.
They found that 36 per cent of elderly men and 47 per cent of elderly women suffer from a lack of vitamin-D during the winter months(1).
Researchers from the Johns Hopkins School of Medicine in Boston report similar findings(2).

Why a deficiency?
Our main source of vitamin-D is sunlight.
It is estimated that at least 75 per cent (MHIP: some sources mention 90%) of our supply comes from photochemical conversion of 7-dehydrocholesterol in the skin ( MHIP : or expousre to sun ).
This conversion occurs when we are exposed to the sun's UVB rays (290-320 nm wavelength).
...
Most foods contain very little vitamin D with the main sources being eggs, fish, and fortified milk.

Lack of exposure to sunlight is the main cause of vitamin D deficiency.
In recent years medical authorities have exhorted us to avoid the sun and apply sunscreen before we venture outside.
This advice is aimed at reducing the astronomical increase in the incidence of skin cancer and melanoma.
Recent research, however, has shown that relying on sunscreens to prevent skin cancer and melanoma is counterproductive. Research has also shown that regular use of sunscreens completely eliminates the body's synthesis of vitamin D and can lead to a serious vitamin D deficiency.

Sun avoidance by itself leads to vitamin D deficiency.
Windowpanes effectively screen out UVB rays. Clothing, whether it be a light cotton shirt or a heavy jogging suit, eliminates or seriously reduces the synthesis of vitamin D(10). Air pollution (ozone and sulfur dioxide) cuts out a large portion of the sunlight needed for vitamin D synthesis and many medications (anticonvulsants, steroids) also interfere with vitamin D formation.
Vegetarians are at particular risk for vitamin D deficiency because of their high fiber intake and lack of dairy products in the diet.

Health authorities have attempted to ensure that people get enough vitamin D through the diet by fortifying milk.
This approach, however, is ineffective.
Recent research studies have shown that the vitamin D content of milk is highly erractic and many of the samples tested in two recent surveys done in Canada and the United States contained no vitamin D at all.

Consequences of vitamin D deficiency
The consequences of vitamin D deficiency are many and varied.
Drs. Cedric and Frank Garland of the University of California suggested as early as 1980 that a lack of vitamin D could be a major cause of colon cancer.
The Garland brothers found that the incidence of colon cancer was almost three times higher in New York than in New Mexico.
They attributed this to a vitamin D deficiency caused by the relative lack of sunshine in the northern United States.
Another survey carried out in Chicago reached the conclusion that men whose daily vitamin D intake was 150 IU or more had a 50 per cent lower risk of developing colon cancer than did men with a lower intake.

Vitamin D deficiencies have also been implicated in the development of breast cancer, melanoma ( MHIP : YES ALSO MELANOMA itsef ), ovarian cancer, prostate cancer, and of course, osteoporosis and hip fractures.

Breast cancer rates in the northeastern part of the United States are almost twice as high as in the south and southwest.
The incidence of ovarian cancer among women aged 45 to 54 years is five times higher in Indiana than in North Carolina.
Researchers ascribe this difference to a vitamin D deficiency in northern states caused by a lack of sunlight.

Osteoporosis affects about 24 million people in the United States alone and costs about 10 billion dollars a year to treat.
One third of postmenopausal women suffer from osteoporosis and, as a result, experience a total of about 1.3 million bone fractures a year.

Deficiencies in calcium and vitamin D intake have both been implicated in the development of osteoporosis.
Recent research has shown that elderly people receiving a single, large, oral dose of vitamin D (100,000 IU) at the start of the winter had 20 per cent fewer bone fractures than a control group.

Conclusion
It is clear that vitamin D deficiency is widespread and can have serious, even fatal consequences.
Regular, prudent, unprotected exposure to sunlight is the most effective way of maintaining an adequate vitamin D status
. However, during the winter months, elderly people and people who spend most of their time indoors should supplement with vitamin D. Recommendations vary from 400 IU (10 micrograms) to 800 IU per day.
An adequate vitamin D supply significantly reduces the risk of breast cancer, colon cancer, ovarian cancer, prostate cancer, osteoporosis, and hip fractures.



Sunshine and Your Skin
Your Skin Type Will Help You Determine Your Sunshine Needs

http://www.associatedcontent.com/article/6095682/sunshine_and_your_skin.html?cat=5
...
Fair skin is more susceptible to burning, and the fairer you are the more susceptible you are.
...
Fair skinned people should not spend too much time in the sun during the heat of the day, and they should seek the highest SPF level when choosing sun screen.

* If melanoma (skin cancer) runs in your family, you are at a higher risk so take extreme care to never allow your skin to burn. You may have to use sunscreen, and cover your body with a hat and clothes during the heat of the day.
The skin cancer association has said that your chance of getting skin cancer increases by 50% if you have a parent or sibling who has also had it.
...
* The Vitamin D Miracle! And there is no doubt that this vitamin is a miracle.
Spending just 3 days a week in the sun for 15 minutes will prevent a deficiency, and is good for your skin too.
Vitamin D plays a role in keeping bones strong, preventing heart disease and helps prevent many forms of cancer.
...
* When you use a tanning booth ( or sunbed ) you are getting deeper radiation than you'd get just from the sun, so be careful.
Some people feel a sense of security when they tan in a booth, but in fact, one must be even more watchful.



How sunshine triggers skin repair
18:00 28 January 2007 by Rachel Nowak
http://www.newscientist.com/article/dn11039-how-sunshine-triggers-skin-repair.html

A blast of sunshine could help fight skin diseases and cancer by attracting immune cells to the skin surface, according to a new study.
Eugene Butcher at Stanford University in California, US, and colleagues discovered an interesting immune process in human skin.
Immune cells in the skin, called dendritic cells, convert vitamin D3 ( produced in exposed skin in response to sunlight ) into its active form.
This "active" vitamin D3 then causes T-cells to make surface changes that allow them to migrate to the uppermost layer of the skin, Butcher's team found.
T-cells are the immune cells that destroy damaged and infected cells
, and they also regulate other immune cells.
The findings explain how T-cells "know" to go to the skin's surface once the skin has suffered some sun-induced DNA-damage
, the researchers say.
"Sunshine is good for you, as long as it's not too much," says team member Hekla Sigmundsdottir.
She points out that the skin disorder psoriasis is sometimes treated with vitamin D3 creams - it may work by moving T-cells into the skin, she speculates.
The finding adds to a growing body of evidence that dendritic cells, which live in tissues that are exposed to the outside environment, such as the skin and nose, run "traffic control" for the immune system, interpreting local conditions and directing T-cells to where they are needed.

Journal reference: Nature Immunology (DOI: 10.1038/ni1433)

MHIP : sun ( a blast of sun ) attracts immune cell ( T-cells ) to the skin.
Immune cell ( T-cells ) in the skin repair the skin and destroy damaged cells ( including cancer cells ) and infected cells.
Too less sun ( especially in combination with too much light of the wrong sources ) is much more
dangerous and cancerogenous than too much natural sun light ( including for skin cancer ).
Regular natural sun light is healing ( including for skin cancer ).



A study by the US Navy found the most melanoma in people who worked indoors all the time
( MHIP : so not the people that are most exposed to natural sunlight !).

Also, most melanomas appeared on parts of the body that are seldom exposed to sunlight
( MHIP : so not on the parts that are most exposed to the sun as you would expect ! ).

FS Light vs Cancers / Cancers hate full-spectrum light
( see further on this page )

Rise in cancers in countries with less sun is correlated to the use of sunsreen ( see further on this page )
( MHIP : so lack of full spectrum ( FS ) light ( natural sun lighth ) probably is the main cause for melanoma and not excess of sun )

The region of Myhouseinparadise and the North East of Brasil are amongst the most natural light exposed regions of the world.
Large part of the population works in agriculture, fishing and building and have an extreme exposure to the sun.
But you do not find a significant amount of skin cancer in the region or for example amongst our workers.
They all expose very little to Fluorescent Lighting neon light during the day, but instead they get a high to extremely high exposure to natural sunlight every day and use never or very seldom sunscrean and sunglasses and the drinking water in their communities was not chlorinated untill recently.

The inference is that both very very low ( and probably very high ) exposures to UV light can be harmful,
and moderate exposure is healthyl and protects against diseases including cancer and skin cancer.


MHIP : skin cancer is occuring and this increasingly amongst people that live and work indoors in regions were there is not much sun, are mainly exposed to artificial light and use sunscrean ( and sunglasses ) when they get in the sun
( and use chlorinated water at least for showering and or in the bath ).

...
The use of sunscrean and sunglasses also could give them a false sense of protection whenever they expose themselves to sun and that makes them skip some sort of adaption period and possibly takes away their sense of moderation.
When they adapt they do not want to adapt while in the sun, but before they get in the sun and by artificial means (like artificial lights)
( while instead staying and exercising outdoor would be a more healthy preparation even if that would be under a cloudy sky ).



Sun exposure and survival from malignant melanoma

http://en.wikipedia.org/wiki/Risks_and_benefits_of_sun_exposure

A study in the February 2, 2005 issue of the Journal of the National Cancer Institute looked at markers of sun exposure in more than 500 people who had recently been diagnosed with malignant melanoma .
The researchers found that solar elastosis, or sun damage to the skin, was independently associated with a surprising increased survival from melanoma.
...
And all measures of sun exposure
( i.e., history of severe sunburn, high levels of intermittent sun exposure, solar elastosis ) were associated with improved survival from melanoma.

Furthermore, participants who reported high skin awareness, but not those who reported skin examinations, had better survival.
If confirmed, the results of this study suggest that whereas excessive sun exposure may lead to the development of melanoma, sun exposure may protect against the progression of melanoma into more fatal disease.


Seasonal variation and sun exposure
There is ample evidence that the death rate in elderly patients increases in winter months.
In a recent study of seasonal mortality in terminal cancer patients in the United States, it was found that compared to those patients who died during June, July, and August, the number of deaths of patients increased an average of 20% in January, February, and March.
This near-sinusoidal pattern was remarkably consistent over a five year period.
Mortality in the general population declines in the late summer to early fall months.
In the Mediterranean countries, the lowest average daily mortality was observed in September.
The fewest deaths were in August in Sweden and North America.
The fewest deaths in Japan occurred in July.
In the southern hemisphere, the lowest mortality in Australia occurred in March and in February for New Zealand.
In Scotland (/wiki/Scotland), patients who suffer cardiopulmonary arrest (heart attack) in winter have a significantly lower likelihood of surviving. People who arrested in winter were 19% less likely to survive compared to those who arrested in summer.
For Atrial Fibrilation (AF), significantly more hospital admissions occurred in winter compared to summer.

Deaths due to variceal bleeding in France occurred with a clear annual periodicity and peaked in winter (December, January) in the overall population.
The distribution of cumulative monthly deaths differed by 24%, with a peak 14% above average in December and a trough 10% below average in July.
In the French Three-City study, high blood pressure, defined as a systolic blood pressure of 160 mmHg or higher, or a diastolic blood pressure of 95 mmHg or higher, was detected in 33.4 per cent of participants during winter and 23.8 percent during summer.


 

Good health can be maintained and many disease conditions alleviated with adequate exposure to full-spectrum light.

http://www.bibliotecapleyades.net/salud/esp_salud04a.htm

ULTRAVIOLET LIGHT: MYTHS AND FACTS

UV intensity is now forecast in population centers daily.
The US Environmental Protection Agency (EPA) suggests that when outdoors we should "protect ourselves against ultraviolet light whenever we can see our shadow".
And many physicians give their patients the same warning. This is terrible advice.
...
As a result of the EPA’s kind of advice, ... we slather our skin with sunscreen for even brief sun exposure.
People who engage in these practices are ruining their disposition and health.

The phobia arose after investigators anaesthetized animals, propped their eyes open and shined intense UV light into them; this damaged their retinas.
Excessive exposure to one kind of ultraviolet (shorter-wave, germicidal UVC) can damage tissue.

But the EPA makes the ridiculous leap from that truth to the conclusion that we should avoid all UVC.

UVC is found in tanning salons and halogen lamps.
In fact, the trace amounts of UV radiation in natural daylight are required for physical and mental health, civilized behavior, muscle strength, energy and learning.

Sunlight, in moderation, improves immunity and stimulates our metabolism while decreasing food craving, and increases our intelligence.
...
A paper published in the British Journal of Cancer shows that from 1957 to 1984 the incidence of malignant melanoma in Norway increased by 350 per cent for men and 440 per cent for women.
During the same period there was no change in ozone levels over Norway, nor any significant change in annual exposure to ultraviolet radiation from the Sun
....
"What is clear, however, is that there is a great deal of ill-informed comment on the subject of ozone depletion and, for that matter, sunbathing.
Should depletion of the ozone layer ever become a cause for real concern, then some people might develop cancer who might not have, had there been no depletion, but until this happens there is much more to be gained from investigating the real causes of skin cancer and encouraging safe sunbathing than in being preoccupied with the state of the Earth’s upper atmosphere and blaming everything on the Sun.
Diet and lifestyle play a far more significant part in the genesis of cancer than is currently recognized.
The same can also be said about another condition that is supposed to be on the increase because of ozone depletion--that of senile cataract."

Note that even low exposure to UVB significantly increases the risk of cataracts, but only with the consumption of a Western junk food diet rich in unsaturated fats and their oxidized products.
Those who consume a more sensible diet, and supplement it with vitamins C and E, do not get cataracts even from lengthy sun exposure.

PHOTOBIOLOGY
Starting from a high-school hobby of time-lapse photography, the late John N. Ott, DScHon, founded the new science of photobiology.
He was active into his tenth decade.

Dr Ott’s last book, one of many publications, is Light, Radiation and You:
How to Stay Healthy (1990). In it he wrote:

"Mankind adapted to the full range of the solar spectrum, and artificial distortions of that spectrum--malillumination, a condition analogous to malnutrition, may have biologic effects."

In an interview published in 1991, he noted:

"There are neurochemical channels from the retina to the pineal and pituitary glands, the master glands of the whole endocrine system that controls the production and release of hormones.
This regulates your body chemistry and its growth, all organs of your body, including your brain, and how they function."

The critical reader will ask: where are the controlled, scientific tests supporting Dr Ott’s statements?
The answer to that question is: who can make money promoting sunlight?

SIDEBAR
Two hours of bright light in the evening can sometimes cure symptoms such as weight gain, depression, carbohydrate craving, social withdrawal, fatigue and irritability.

I. Ultraviolet Deprivation Health Effects
First, let’s consider the health effects of ultraviolet deprivation.

Indoor Lighting and Melanoma
Malignant melanoma is often alarmingly but wrongly blamed on sun exposure.
The dangerous kind, called skin cancer, is ultimately fatal if not corrected.
A study by the US Navy found the most melanoma in people who worked indoors all the time.
Those who worked both outdoors and indoors some of the time had the lowest incidence.
Also, most melanomas appeared on parts of the body that are seldom exposed to sunlight.
The inference is that both very high and very low exposures to UV light can be harmful--and moderate exposure is healthful.

Sunscreens and Melanoma
Sunscreens block out only UVA and UVB, which we all need in trace amounts, but not the potentially dangerous, germicidal UVC.
No commercial sunscreens have been proved safe.
Their chemicals penetrate the skin into the circulation and add to the burden of toxins to be detoxified.
Commercial sunscreens increase the risk of melanoma by causing mutations when the cells’ chromosomes interact with the chemicals and the light.
Natural sunscreens, as well as commercial ones, curtail needed uptake of vitamin D3 from UVB, increasing the risk of the bone-thinning disease osteoporosis.

Moreover, Lita Lee, PhD, notes:

"Mounting evidence indicates that many of them [sunscreens] contain carcinogens and that the rise of skin cancers parallels the increase in sunscreen usage.
The only sunscreen I recommend is coconut oil, although, believe me, you cannot slather this oil on your skin and bake in the sun all day.
Adding a little iodine to the coconut oil for the first week of summer gives added protection; however, do not use the iodine for more than a week, as continued use will inhibit your thyroid function. In my opinion, the only other safe (non-carcinogenic) sunscreen would be one containing titanium dioxide."

Fluorescent Lighting and Melanoma
A study published in the prestigious medical journal Lancet and a Russian study found that fluorescent light rather than sunlight promotes melanoma, proportionately to the time of exposure.
In the Lancet study, among a sample of nearly 900 women, those who worked indoors under fluorescent lighting had 2.l times higher melanoma risk (95% confidence interval, CI, 1.32 to 3.32) than others.
Among women exposed for 20 years or more, the relative risk (RR) was 2.6 (95% CI, 1.2 to 5.9).
Relative risks were lower in women who had been most heavily exposed to sunlight, both playing outdoors as children and sunbathing as adults.
In a smaller sample of men, the RR for fluorescent lights with 10 or more years’ exposure was 4.4; and for those who had spent the least time in the sun while children, the RR was 7.3.

And so we see that lengthy exposure to full-spectrum sunlight, including trace UVC, partially "immunized" both men and women against later development of melanoma.
...
All this thoroughly explodes the claim that sun exposure causes malignant melanoma.

In the 19 years since publication of Beral’s carefully researched article in the Lancet, no one has refuted the finding.
But many ignore it and could make more money if the article and its information would simply go away.

Why do fluorescent lights cause melanoma? "Emissions from such light extend into the potentially carcinogenic range."

Dr Ott found that, specifically, the cathodes located at the ends of the light tubes emit X-rays and other electromagnetic pollution.
Plants living under the central portion of long fluorescent light tubes grow normally; but when placed close to the ends of the tubes, their growth is abnormal and stunted. Laboratory animals placed in a cage close to the ends of these light tubes become aggressive and cannibalistic.

Dr Ott also found that the light from fluorescent tubes, as well as TV sets and computer terminals, causes red blood cells to clump together after prolonged exposure. This reduces alertness, promotes a tired feeling and increases the risk of heart attack and stroke.
But when the ends of the light tubes are shielded with lead and traces of UV are added to the light, plants and animals under them grow and function normally.
And so wrapping the ends of fluorescent light tubes with lead tape, says Dr Ott, is fully as important as full-spectrum light itself.

Melanoma can also result from excessive exposure to sunlamps; their rays and those from bright halogen lights include some of the dangerous UVC.
If users of sunlamps consume a junk diet, their risk of melanoma will be increased.
Halogen lamps are also a serious fire hazard if they fall over or if inflammable material touches the extremely hot bulb.

SIDEBAR
Valdemar Valerian (../esp_autor_valvalerian.htm), PhD, and his Leading Edge Research Group (http://www.trufax.org/welcomemsie.html),
...
Chlorination and Melanoma
Drinking and swimming in heavely chlorinated water can also cause malignant melanoma.
Sodium hypochlorite, used in chlorination of water for swimming pools, is mutagenic in the Ames test and other mutagenicity tests.
Redheads and blonds are disproportionately melanoma-prone; their skin contains a relative excess of pheomelanins compared to darker people.

Franz H. Rampen and his associates in The Netherlands state that the worldwide pollution and the chlorination of swimming pool water have promoted an increase in melanoma.

Another major factor in the increase in reported incidence of melanoma has been physicians continually relaxing their standards for what constitutes melanoma.

Synthetic Hormones and Melanoma
What about oral contraceptives and hormone replacement therapy (HRT)?
Melanomas have increased sharply among women in the principal Pill-taking countries of Australia, America and in Europe.
In the Walnut Creek (California) study, all the women who developed melanomas under the age of 40 had used the Pill.
By 1981, the overall increased melanoma risk for Pill-users was statistically significant at three times.
The Pill also promotes development of heart attacks, in part by depleting body stores of vitamin B6.

Further, like breast cancer cells, those tumours have oestrogen receptors.
And so women on HRT are more likely to develop melanomas than non-users.
...

II. Ultraviolet Deprivation Health Effects
Certain effects of ultraviolet deprivation are equally remarkable and tie together with health benefits.

FS Light & Childhood Health
In 1973, radiation-shielded full-spectrum (FS) lights were installed in five classrooms in Sarasota, Florida.
And what happened? Several extremely hyperactive, learning-disabled children calmed down completely and learned to read.
Absenteeism dropped.
The children in four standard-lit rooms continued to misbehave ( as tracked by concealed motion-detecting cameras );
their learning disabilities and absenteeism were unabated.

And after a year, students in the full-spectrum classrooms had one-third less tooth decay than those taught under standard lighting.
Laboratory mice, which had been exposed all their waking hours to FS light, had zero tooth decay.
Similar findings were reported from California, Washington state and Alberta, Canada.
A classroom comparison in Vermont found that full-spectrum lighting strengthened immunity.

Why was there so much less tooth decay after exposure to full-spectrum light, including trace UV?
And why did immunity improve under FS lights? According to Dr Ott:

"Every nutritional substance and medicine has a specific wavelength absorption.
If those wavelengths are missing in the artificial light source a person is exposed to, then the nutritional or other hoped-for benefits of the substance will not be utilized."

UV functions as a nutrient and as a co-factor ( a substance required for a bodily process to occur ) in the utilization of other nutrients.

So the full-spectrum lights corrected the childrens deficiency of vitamin D3 (not the same as the toxic form of vitamin D added to milk),
now considered a pro-hormone.
This enabled more complete calcium absorption--and lowers the risk of osteoporosis and hip fractures in later life.
Recent research has found that nearly half the people of all age groups taking RDA-strength supplements have too little vitamin D.
When the body doesnt have enough of it to absorb adequate calcium from food, it extracts calcium from bone.

FS light also strengthens immunity in other ways.
It helps protect against multiple sclerosis and heart attacks, among other things.



http://www.bibliotecapleyades.net/salud/esp_salud04a.htm

FS Light vs Cancers
Cancers hate full-spectrum light.

A tumour-susceptible strain of mice lived more than twice as long under full-spectrum as under standard lighting, and rats exposed to full-spectrum light had significantly lessened tumour development.
The tunnel-visioned National Cancer Institute and American Cancer Society ignore these findings, which six major medical centers have confirmed.
Terminal cancer patients, who Dr Ott knew of personally, got well in a rocking chair in the sunshine.
Dr Jane Wright, directing cancer research at Bellevue Memorial Medical Center in New York City in 1959, was fascinated by Ott’s ideas.
So she instructed progressive-tumour patients to avoid artificial lights and stay outdoors as much as possible that summer.
They were not to wear sunglasses or prescription lenses, which block UV light.
By that fall, the tumours in 14 of 15 had not grown, and some patients had got better; the one whose condition deteriorated sat outdoors but wore prescription lenses.
Ott has been criticized for making no scientifically controlled human studies.
Well, funding for continuation of that study was withdrawn--that was his experience over and over.
...
A Chicago-area elementary school suddenly reported five times the national average incidence of leukaemia, a kind of cancer of the blood.
All of the afflicted children but one were being taught in rooms where teachers kept the blinds drawn, and the children were exposed all day only to melanoma-promoting fluorescent light.
When even the amount of UV that can get through window glass was let in, the leukaemia cluster disappeared.
(Raymond Peat, PhD, thinks FS sunlight is best received through glass.
FS Light vs Arthritis and Blindness
Early in his research career, Dr Ott fell and broke his glasses; soon, his arthritis disappeared.
And in 1996, Marion Patricia Connolly, executive director of Price-Pottenger Nutrition Foundation (PPNF), had much the same experience.
Full-spectrum eyeglasses, i.e., lenses that transmit all ultraviolet light, are difficult to find.
I take off my glasses outdoors whenever I can.
Exposed to full-spectrum light, a father rat is docile and even helpful after his babies are born.
But when the same rat pair is moved under standard light, before the birth of the next litter the male must be removed to prevent aggressiveness and cannibalism. Moved back to natural light for still another litter, he is gentle again.
Although human fathers aren’t likely to eat their babies, do we really want more domestic aggressiveness?
Alternating full-spectrum light and total dark cured children born blind as a result of brain injury.
The technique was advocated by W. H. Bates about 1904 and endorsed by Aldous Huxley in 1930.
Efficacy was confirmed in the recent Annual Report from the British Institute for Brain Injured Children.
How can all this be explained?
Full-spectrum light, entering the eyes during waking hours, promotes night-time pineal gland secretion of melatonin. This sleep-promoting antioxidant destroys carcinogenic hydroxyl radicals--and also slows ageing.
Melatonin can suppress growth of human breast cancer cells in vitro (in a test tube), and can cross all barriers to enter every cell.
So enough sleep--best achieved in total darkness --becomes anti-ageing, antioxidant, anti-cancer, anti-heart attack therapy!
Except in short-term emergencies, people younger than about 50 should use supplements of melatonin cautiously, if at all.
For people over 40 to 45, one to three milligrams before bedtime safely promotes both prompt falling asleep and a good night’s rest, in addition to its other benefits.
In a laboratory, viruses are weakened by exposure to full-spectrum light that includes traces of UV.
Infectious organisms such as E. coli K12 AB2480, which can cause food poisoning, dislike ultraviolet too.
The Morris Center in Winnipeg, Canada, promotes "amazing" healing by shining full-spectrum light onto wounds.
FS Light vs Seasonal Affective Disorder
The power of full-spectrum light against SAD (seasonal depression) --again, by entering the eyes-- has been amply demonstrated.
FS light benefits nonseasonal depression, too, but not as much.
Such light energizes and regulates the body’s entire chemistry. Won’t "protecting" millions of people from UV, as the EPA advocates, then worsen the growing epidemic of depression?
Dietary sufficiency of vitamin D also needs consideration here."Seasonal affective disorder has been treated successfully with vitamin D.
In a recent study covering 30 days of treatment comparing vitamin D supplementation with two-hour daily use of light boxes, depression completely resolved in the D group but not in the light-box group."
The cells in the retinas of your eyes will not divide and regenerate without a small amount of ultraviolet light.
And so full-spectrum light reduces the risk of retinal degeneration, the leading cause of blindness among the elderly.

...
(A prominent ophthalmologist declared the outcome "unlikely"; however, an exhaustive computer literature search by Kirk Hamilton, PA-C, publisher of Clinical Pearls News, found no refutation of the finding.)White willow bark provides the same benefits as aspirin without stomach irritation or blindness, as do three glasses daily of purple grape juice.
And unlike aspirin, the flavonoids in purple grape juice remain effective when adrenaline levels rise.
Two 400-milligram capsules of white willow bark are equivalent to one baby aspirin.
Eating a lot of dark-green leafy vegetables such as spinach, kale and Brussels sprouts also helps avoid this condition.
Many dermatologists advise older patients to stay out of the sun to avoid skin cancer.
The thousands of elderly patients rotting in nursing homes come to mind.
That advice may unintentionally help to make patients sicker and older beyond their years.
Staying indoors will cause problems a lot worse than skin cancer.
Older people’s bones will crumble and break (osteoporosis); these elderly patients will hate living (depression).
Articles in the journals Cancer, Cancer Research and Preventive Medicine suggest that avoiding sunlight could promote the development of cancers other than those of the skin.



T cells take aim at cancer

http://www.pnas.org/content/99/25/15840.long

The immune system
http://www.cancerhelp.org.uk/about-cancer/what-is-cancer/body/the-immune-system

ELDERLY SKIN RAISES CANCER RISK
http://www.nigerianbestforum.com/blog/?p=22683



Trihalomethanes ( THMs ) created as a byproduct of chlorinating water, can be absorbed by drinking chlorinated water,
through the skin in bath, shower and pools.

Avoid taking long showers, baths and avoid heating the water too much if water is chlorinated.
Avoid extended swimming in public chlorinated pools.

Spend as much time as possible in Myhouseinparadise because it is the only place were you have mineral water in the mains that also is not chlorinated and holds no bacteria and
can avoid the carcinogenics and health hazards mentioned above and in radiation_radioactivity_cancer.html and water_heart_disease_attack_stroke_artherosclerosis.htm.

In My House in Paradise mineral water in taps, showers baths is mineral water and is tested bacteria free and not chlorinated
( it is useless to chlorinate total bacteria free mineral water because there is nothing to kill or sterilize ).
(They also do not chlorinate commercial bottled mineral water which by the way is not always bacteria free).
THMs are formed when bacteria and chlorinated water act together.



Editor's Note: This article is not intended to provide medical advice, diagnosis or treatment.


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