Scientists Admit -- Sun Exposure Benefits Outweigh Risks
January 26, 2008
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Moderate sun exposure offers more health benefits than risks, particularly for people who are deficient in vitamin D or who live in colder, northern latitudes, according to U.S. and Norwegian researchers.
The study found that vitamin D levels, which were calculated based on sun exposure, were linked to survival rates for cancer patients. Those who lived in sunnier, southern latitudes, and had higher vitamin D levels, were less likely to die from cancer than people in northern latitudes.
The researchers analyzed the amount of vitamin D generated by sun exposure at different latitudes, and cross-referenced it with data of cancer incidence and survival rates for people living in varying locations.
They found that people in northern latitudes produce significantly less vitamin D than people nearer to the equator. Specifically, they found Australians produce 3.4 times more vitamin D than people in the United States, and almost five times more vitamin D than Scandinavians.
Meanwhile, rates of major cancers such as colon, lung, breast and prostate increased from north to south, while survival rates decreased from north to south.
The researchers said the findings provide further support for sun-induced vitamin D on cancer prognosis.
Previous studies suggest that vitamin D may protect against cancer by discouraging out-of-control cell reproduction and hindering the formation of new blood vessels for tumors.
How Vitamin D Performance Testing Can Help Optimize Your Health
Additionally, a robust and growing body of research clearly shows that vitamin D is absolutely critical for good health and disease prevention. Vitamin D affects your DNA through vitamin D receptors (VDRs), which bind to specific locations of the human genome. Scientists have identified nearly 3,000 genes that are influenced by vitamin D levels, and vitamin D receptors have been found throughout the human body.
Is it any wonder then that no matter what disease or condition is investigated, vitamin D appears to play a crucial role? This is why I am so excited about the D*Action Project by GrassrootsHealth. It is showing how you can take action today on known science with a consensus of experts without waiting for institutional lethargy. It has shown how by combining the science of measurement (of vitamin D levels) with the personal choice of taking action and, the value of education about individual measures that one can truly be in charge of their own health.
In order to spread this health movement to more communities, the project needs your involvement. This was an ongoing campaign during the month of February, and will become an annual event.
To participate, simply purchase the D*Action Measurement Kit and follow the registration instructions included. (Please note that 100 percent of the proceeds from the kits go to fund the research project. I do not charge a single dime as a distributor of the test kits.)
As a participant, you agree to test your vitamin D levels twice a year during a five-year study, and share your health status to demonstrate the public health impact of this nutrient. There is a $65 fee every six months for your sponsorship of this research project, which includes a test kit to be used at home, and electronic reports on your ongoing progress. You will get a follow up email every six months reminding you "it's time for your next test and health survey."