Obesity Raises Cancer Risk(Page 3) Experts aren't sure why extra fat can lead to malignancies, but changes in the circulating levels of various hormones (insulin, insulin-like growth factors and sex steroids) might explain the link. Here's more bad news as the world heads for a smoke-free future: An accompanying commentary from Swedish researchers notes that as people quit smoking (the biggest cause of cancer in developed countries), weight gain may become the main lifestyle factor contributing to new cancers. More information Visit the American Cancer Society for more on the different types of cancer. Related Links
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