When we eat highly processed junk food the walls of the colon become caked with fecal matter and then it finds itself in a downward spiral unable to do its job. As this putrid acidic fecal matter—toxins—and other impurities—continue to build and line the walls—the passage for removing feces from the body becomes increasingly restricted. Additionally, the colons ability to release and absorb vitamins is greatly diminished as is its ability to properly extract water which leads to diarrhea or constipation.
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The high levels of toxicity in the colon are now forced to pass through the walls of the colon resulting in the entire body becoming acidic (without oxygen). At this point your immune system is unable to function in this acidic environment which leads to all types of serious health issues and death if not dealt with timely and properly. In fact, intestinal cancer has the second highest mortality rate coming in under lung cancer which presently holds the number one spot. 

Even when we try to consciously eat healthy food it is impossible to escape all the toxins coming from fertilizers, pesticides, personal hygiene products, our water, medications, and the air we breathe. In the “modern” world there is just no escaping toxins—which when sufficient amounts have been taken in by the body—also leads to an overburdened colon. And once our purification system (sewer system) has been overburdened the entire body becomes toxic.​​​

Not many doctors even consider the importance of the colon in keeping us healthy. Consequently, people end up taking a handful of pills for all sorts of health issues. And as we should all know, pills only treat the symptom and not the root cause of the problem.