Title: Why Marin County Has The Highest Breast Cancer Rates In The US
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Content: It is not long before the  radiation is washing back up on riverbanks and shorelines. In fact, in  the first cancer mapping survey in history (1850-60) in the Lake District  of Britain, Alfred Haviland reported that the highest cancer rates (from  natural background radiation) were along riverbanks and shorelines providing  a strong environmental link to cancer before manmade radiation was introduced  into the environment after 1900. Pre-1900 cancer rates represent the true  baseline for cancer studies. The chance discovery of an abstract in the Journal of  Environmental Radioactivity, "Radiocesium in North San Francisco Bay  and Baja California coastal surface waters", provided me with an answer  to a puzzling question about breast cancer. Hundreds of millions of dollars  have been spent by the University of California to identify the cause of  what may be the highest breast cancer rates in the United States in Marin  County, California, just north of San Francisco. Fig. 1: San Francisco Bay Area, with Marin County in  upper left corner. Even more surprising, the radiocesium reported in the  paper had been measured by the Lawrence Livermore Nuclear Weapons Lab,  from the north end of San Francisco Bay to the coastal waters at the tip  of Baja California, Mexico. By mapping the pattern of breast cancer in  Marin County, I identified the San Francisco Bay shoreline of the Marin  County peninsula as the environment where the highest rates of breast cancer  occur in the county.