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The Journal of the National Cancer Institute published an article saying that colonoscopy for primary screening might be going too far. I agree! The benefits, harms, and costs have not been determined. Checking the stool for ocult blood and flexible sigmoidoscopy have been shown to be of value but there's no data showing that colonoscopy gives additional...

  The role of stem cells in cancer metastasis is addressed. Communication between cancer cells and the tissues where it will eventually spread is discussed. Why cancer cells spread to only certain organs and tissues is addressed.          

When we don't know what action to take about important issues in our lives it can be quite unsettling. In the case of Covid 19, we are getting conflicting points of view from a wide range of sources of information that are supposed to be trusted. Do you trust the FDA, CDC, NIH, WHO, POTUS, the conspiracy theorists, or do you have your...

  When you don't know the outcome of a medical test, the uncertainty of not knowing can be more stressful and anxiety provoking than the worst possible outcome. Our minds tend to worry and we need to learn to "worry well." Chronic stress suppresses immunity and sets the stage for further inflammation and progression of whatever disease...