Not to be sarcastic, because I do take health seriously, but the odds are pretty good. According to the CDC, a 50 year old man has only a 1.9% chance of developing colon cancer in the next 20 years....that's 98% that won't.
CDC - Colorectal Cancer Risk by Age
Since I have been scoped twice, I would think it safe to say my personal odds are likely less.
I have come to the conclusion that this particular procedure and many other preventative procedures are over done in this country. There is a strong profit incentive to keep everyone scared that they might possibly have an undetected cancer.
Certainly lives are saved by colonoscopies. Every once in a while a symptomless cancer is found and removed successfully. That's a good thing. But many many more people are put through a very humiliating and painful procedure, often scared to death of what might be found. In my case, each time a millimeter scale adenomatous polyp was found. Perhaps these could have developed into cancer....some do....but the fact is that something like 20 - 30% of people over 50 have polyps...and the vast majority never present any danger.
People should get screened if they really feel that they want to know...with a full disclosure of what the odds really are, what the experience is really like rather than having a doctor harping on you that your life is at great risk if you don't get screened.
While I have incredible respect and admiration for medical professionals and have been well taken care of by some wonderful nurses...please don't assume it's a comfort to those of us with modesty issues to say something along the lines of "I see hundreds a week and it doesn't do anything for me." OK, I get it, seeing my private parts is no big deal for you. That's fine, you are comfortable with it....this kind of statement only goes to what your feelings are as the caregiver. It does absolutely nothing to alleviate the embarrassment and humiliation I feel when asked to expose myself. No big deal for you...it is for me...and having you tell me it is no big deal only dehumanizes me somewhat as if my feelings don't matter at all. A lot of medical professionals...well meaning I'm sure...use this kind of statement. Please rethink that, it is not comforting in the least and doesn't help.
Again, I'm not likely to comply with my doctor's wishes to have me do this again in a few years. To me it was humiliating, I woke up during the procedure even under propofol and I felt like I wasted my time, my insurance company's money and my doctor's time that he could have used treating patients who actually did have a problem in that area.
That said...I do highly respect the people in this profession and on this board and thank you for all that you do.