fruitgirl said...
C-scopes for colon cancer screening aren't to prevent colon cancer, it's to catch it early enough that it's treatable. And stats support that screening is a big reason mortality due to colon cancer is declining.
From Colorectal cancer statistics, 2014
http://onlinelibrary.wiley.com/doi/10.3322/caac.21220/full
"Colorectal cancer death rates have been decreasing since 1980 in men and since 1947 in women (Fig. 4). Declines since 1975 have been attributed to improvements in treatment (12%), changing patterns in colorectal cancer risk factors (35%), and screening uptake (53%)"
1) Colon cancer deaths have stayed roughly on course, with minor declines throughout the years. The link you gave me showed 2% every year, which isn't a statistically significant number.
This isn't due to the fact that they are being prevented or "caught" early on, but because of more elaborate chemo measures to extend life. The deaths are still as miserable, except chemo just shifts the cause of death due to complications down the road.
See the graph
here on the minor decreases each year.
Going by the CDC data, it still remains the third leading cause of cancer deaths in men and women.
2) Colonoscopies are touted as preventative measures, not to "catch" it early on. Screening is recommended to find the polyps before they become cancerous, so it IS prevention they are talking about
. Except most polyps never turn cancerous, so it's useless to remove them in the first place:
An estimated 95% of all polyps are benign. They will never become cancers, so removing them makes just as much sense as zapping the moles off your buttocks to prevent melanoma.Again, the large scale Minnesota study also showed no almost decrease (.6%) in colon cancer rates for those who under went colonoscopies for screening purposes.
Post Edited (Guardian7) : 5/29/2014 8:23:12 AM (GMT-6)