The breast cancer awareness movement continues to miss out on what may be the single most important factor for preventing breast cancer: sunshine.
Sunshine is not even included in the list of factors currently under study, according to the
Susan B. Komen Foundation.
Nevertheless, the potential role of sunshine for reducing the incidence of breast cancer has been known for decades. That's not all. Sunshine plays an important role in reducing other kinds of cancer as well.
THE IGNORED RESEARCHIn 1990, researchers at the University of California, San Diego, showed that the risk of fatal breast cancer in the U.S. followed a north-south gradient. Northern areas (New York, Chicago) were associated with up to a 1.8-fold higher rate of mortality in comparison with southern areas (Phoenix, Honolulu).
Lower mortality corresponded to higher levels of sunlight.The same research group immediately followed up with a similar study of breast cancer incidence in the former Soviet Union. Results showed the same trend as in the U.S.
The survey expanded worldwide in 2005 to compare the incidence of breast cancer in 175 countries relative to their distance from the equator. In the northern hemisphere, the highest cancer rates were found in Norway, Iceland, Sweden, and Canada. These countries are all located above 60º North latitude.
Comment: So we have yet another reason for working to prevent - or helping to mitigate - the effects of oxidative stress that comes from pollution. Especially if one lives in an area with heavy industry.
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