Thursday, November 29, 2007

Global View Shows Link Between Endometrial Cancer and Vitamin D Status

Vitamin D is produced in your skin in reaction to sunlight. Sure, there's fortified milk, etc., but this is the very best way to get it. Don't be afraid of the sun, it's your friend!

Again, I don't use sunscreen for this very reason, among others. People look at me as if I am crazy/bad mom. We need natural light! We don't go out in the middle of the day, and no one's gotten burned during all our time at the beach this summer, btw. Having plenty of antioxidants helps!

Supplementing in the winter time might be a good idea. Here's health expert Dr. Christiane Northrup on Vitamin D and its link to breast cancer, and some supplementation guidelines.


Newswise — Using newly available data on worldwide cancer incidence, researchers at the Moores Cancer Center at University of California, San Diego (UCSD) have shown a clear association between deficiency in exposure to sunlight, specifically ultraviolet B (UVB), and endometrial cancer.

UVB exposure triggers photosynthesis of vitamin D3 in the body. This form of vitamin D is also available through diet and supplements. Previous studies from this research team have shown associations between higher levels of vitamin D3 and lower risk of cancers of the breast, colon, kidney and ovary.

Approximately 200,000 cases and 50,000 deaths from endometrial cancer occur annually worldwide, including 41,000 new cases and 7,400 deaths in the United States.

The study will be published November 16, 2007, in the journal Preventive Medicine.

“This is the first study, to our knowledge, to show that higher serum levels of vitamin D are associated with reduced risk of endometrial cancer,” said Cedric F. Garland, Dr. P.H., professor of Family and Preventive Medicine in the UCSD School of Medicine, and member of the Moores UCSD Cancer Center. “Previous epidemiological studies have focused on estrogen levels – either natural or through hormone replacement therapy – which play the major role in development of the disease, and on fat intake, which plays a smaller role. Since most women cannot control their natural levels of estrogen, and very low levels of fat intake are not acceptable to most American women, this article provides evidence that vitamin D adequacy should be considered as part of a comprehensive program for prevention of this cancer.”

This paper used worldwide data only recently available through a new tool called GLOBOCAN, developed by the World Health Organization’s International Agency for Research on Cancer. GLOBOCAN is a database of cancer incidence, mortality and prevalence for 175 countries.

The researchers created a graph with a vertical axis for endometrial cancer incidence rates, and a horizontal axis for latitude. The latitudes range from -50 for the southern hemisphere, to zero for the equator, to +70 for the northern hemisphere. They then plotted incidence rates for 175 countries according to latitude. The resulting chart was a parabolic curve that looks like a smile.

“In general, endometrial cancer incidence was highest at the highest latitudes in both hemispheres,” said Garland. “Even after controlling for known variables such as cloud cover, meat intake, weight, skin pigmentation and others, the association remained strong.”

In the paper, the authors caution that this was a study of aggregates, or countries, rather than individuals; findings that apply to aggregates may not apply to individuals. They recommend further research to study individuals for the effect of vitamin D from sunlight, diet and supplements on the risk of endometrial cancer.

This is the third environmental paper from this research team to show a strong association between vitamin D and cancer using global incidence data (GLOBOCAN). The first paper, which illuminated a similar pattern for kidney cancer, was published Sept. 15, 2006, in the International Journal of Cancer. The second, on ovarian cancer, was published Oct. 31, 2006, in the American Journal of Preventive Medicine.


cancer said...

well friends, you can live long or short, but it would be useless if you live it with fear. So in my suggestion it would be bes if we keep away from the fear of cancer.

cancer survivor

Green Fertility Marie said...

Yes, I agree. Fear isn't a very supportive emotion. Enjoy the sun and whole foods!

Anonymous said...

For all the non-believers in the sun these days, think of this. We are called the "Life" planet for a reason. Over 85% of life is possible due to the sun. Without the sun, there really would be no life. How can it POSSIBLY be bad for you?

Yes, overexposure is not good. MOderate exposure, though, on a regular basis is EXTREMELY essential for a body's health and overall well-being. If I get a little red (I hardly ever get burned), I will stay out of the sun and give my body & skin time to heal itself. A lot of skin damage happens when people get a burn and then repeatedly go into the sun, causing further damage to the ALREADY damaged skin. The key is NOT to allow your body to get sunburned, which I agree, is 15 to 20 minutes of sunshine per day. I also heard that although sun exposure on the skin is vital, it is also good to let the sun enter through the eyes, on a less sunny day, which also produces amazing health benefits.

As far as sunblock, I NEVER use it and I live in South Florida. Putting aside the fact that it blocks the body's ability to manufacture Vitamin D from the sun, it also contains some very harmful chemicals, such as titanium dioxide, that goes where? -- gets absorbed through your skin (the largest organ in the body) and goes directly into your bloodstream, which causes great harm over a period of time. Who wants even MORE toxins in their body!!! Not me!! We get enough from pollution (due to poor air quality); things we eat and drink; and not sweating (exercising) enough to rid our body of harmful toxins.

BOTTOM LINE: Get out there and get sunshine on a regular basis!!! And forego the sunscreens!!! Remember, we're the life planet and the sun makes life possible.

Anonymous said...