home *** CD-ROM | disk | FTP | other *** search
- THE WEEK, Page 25HEALTH & SCIENCEAre Mammograms Bad For Your Health?
-
-
- A report that they raise cancer risks for some women is premature
-
-
- Taken at face value, the leaks describing a major medical
- study last week were profoundly disturbing. It's already known
- that about 1 in 9 American women will develop breast cancer
- during her life. Now, said the report, it turns out that women
- ages 40 to 49 who get routine mammograms to detect early breast
- cancer are actually more likely to die from the disease than
- those who avoid the tests. Most experts currently believe it's
- the other way around, and many doctors have long urged women in
- that age group to have a mammogram every year or two. If the
- evidence suddenly pointed the other way, standard medical advice
- would have to change immediately, public service announcements
- would have to be yanked and the estimated 75% of American women
- ages 40 and older who have had the procedure would have every
- reason to panic -- and to get angry at the bad advice they've
- been given.
-
- But for now, the panic is premature. Despite the early
- alarms, it turns out that the study says no such thing. In fact,
- it can't, since the authors haven't finished analyzing the raw
- data yet. As everyone from pollsters to physicists know, raw
- numbers can be misleading until they have been subjected to
- statistical analysis. Says Dr. Anthony Miller, the University of
- Toronto researcher: "Anyone who says the statistics lead to such
- a conclusion at this point is wrong."
-
- What the study does say, according to Miller, is that
- mammography has no demonstrable benefit for women in that age
- range, though it does for older women. While those who get
- mammograms are no more likely to die from breast cancer than
- their untested counterparts, they are evidently no safer either.
- That in itself is not unprecedented: earlier studies have
- pointed to the same conclusion. But it is controversial. No one
- is sure why it should be true, and for now, the medical
- establishment is not backing off its recommendation that women
- between 40 and 49 go ahead and get tested.
-
-
-
-
-
-
-
-
-
-
-
-