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" Given the right conditions, the body heals itself. If you whack your shin really hard on a coffee table, it can get red, swollen, and painful. But your shin will heal naturally if you just stand back and let your body work its magic. But what if you kept whacking it in the same place three times a day—say, at breakfast, lunch, and dinner? It would never heal. You could go to your doctor and complain that your shin hurts. “No problem,” he or she might say, whipping out a pad to write you a prescription for painkillers. You’d go back home, still whacking your shin three times a day, but the pain pills would make it feel so much better. Thank heavens for modern medicine! "
― Michael Greger , How Not to Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease
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" Your cells are preprogrammed to die naturally to make way for fresh cells through a process known as apoptosis (from the Greek ptosis, falling, and apo, away from). In a sense, your body is rebuilding itself every few months16 with the building materials you provide it through your diet. Some cells, however, overstay their welcome—namely, cancer cells. By somehow disabling their own suicide mechanism, they don’t die when they’re supposed to. Because they continue to thrive and divide, cancer cells can eventually form tumors and potentially spread throughout the body. "
― Michael Greger , How Not to Die: Discover the Foods Scientifically Proven to Prevent and Reverse Disease