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#1 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Do Mammograms Cause Cancer?
It certainly would seem so since all x-rays pose a cancer risk. The lastest evidence reported in the current issue of The Lancet by Amy Berrington de González and Sarah Darby found that in Britain the risk of anyone up to the age of 75 getting cancer from diagnostic X-rays was about 0.6%. This amounted to about 700 of the 124,000 cases of cancer diagnosed each year in the UK. But this was a much lower percentage than in some other countries. In Japan the figure was put at more than 3%. Diagnostic X-rays include mammograms. It would seem that women even as young as age 50 risk contracting breast cancer from the very diagnostic tool which claims to detect it, but with error rates so high and accurate detection rates so low as to make the risk/benefit ratio of such x-rays highly dubious.
http://www.thelancet.com/ -- Rouser |
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#2 |
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Anti-homeopathy Illuminati member
Join Date: Aug 2003
Posts: 1,187
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Yes all x-rays cause Cancer, thus any procedure involving an x-ray increases the risk for Cancer. I believe that studies show that mammograms do reduce mortality due to breast cancer, thus the risk of the mammograms is outweighed by the benefit of earlier diagnosis and with modern cancer treatments this leads to increased survival.
The study points out that different practices in different countires account for the differing rates. (too many uses of the diff word in that sentence!) Additionally there is a good chance that this study overestimates mortality caused by medical x-ray usage because the data used is based on the Japanese post Hiroshima/Nagasaki studies which may not extrapolate well, however it is the only real source of data we have about Cancer risk from radiation (ethics and all that ya know). (Notably the post H bomb study patients were exposed to various types of radiation, not just x-rays) What the study says is that x-rays have many important medical usages, however there is a risk associated with them, so medics should think before they order an x-ray. An additional thought of mine, is how will this sit with defensive medical practices ie ordering every test so you don't miss something an get sued. This tends to happen more in the US i believe. Damned either way
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"...at the heart of science is an essential balance between two seemingly contradictory attitudes -- an openness to new ideas, no matter how bizarre or counterintuitive, and the most ruthlessly skeptical scrutiny of all ideas, old and new. This is how deep truths are winnowed from deep nonsense." Carl Sagan I am a Homeopath. Remedies available at reasonable prices. |
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#3 |
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Posts: 1,730
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Originally posted by Prester John [/i]
>>I believe that studies show that mammograms do reduce mortality due to breast cancer, I don't think so. The question is, do mammograms cause more cancer deaths than they prevent? -- Rouser |
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#4 |
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Anti-homeopathy illuminati member
Join Date: Sep 2003
Location: NT 150 511
Posts: 34,340
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Rolfe. |
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"The way we vote will depend, ultimately, on whether we are persuaded to hope or to fear." - Aonghas MacNeacail, June 2012. |
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#5 |
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übernerd
Join Date: Nov 2003
Location: Very Low Earth orbit
Posts: 3,013
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well, a mammogram just saved my sister's life, so i'm a little biased.
everything i've seen finds that the tiny risk is well balanced by lives saved. a more important question to me is why when a less painful technology exists than the mammogram, it isn't used. even though my sister is currently in chemotherapy, i really, really, really don't want to go for the twice/yr mammograms. not because i worry about the exposure, but because they freaking put your boob in a clamp! it is excrutiating for large breasted women like me. i will go for my regular mammogram when they start doing scrotal exams with a vise grip. |
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The Bug Blog |
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#6 |
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Ayay ashay ayay
Join Date: Apr 2003
Posts: 9,029
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And please dont ask questions like that again. |
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#7 |
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Critical Thinker
Join Date: Aug 2001
Posts: 321
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"If I've heard that once, I've heard it again"-- Paul the Samurai |
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#8 |
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Guest
Join Date: May 2003
Posts: 378
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What gave my mother breast cancer wasn't mammograms, but the hormone replacement therapy she was on (my family's history has no breast cancer at all, and cancers in general are almost unheard of among us. Heart disease OTOH is our achilles heel).
Hormone relacement therapy is what needs to go. There must be some evolutionary advantage to menopause, so why interfere with it? |
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#9 |
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Graduate Poster
Join Date: Nov 2003
Posts: 1,182
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I was curious about dosages from flying in comparison to medical scans, and Google brought up this from the BBC:
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The frequent flyer dosage is for 100 hours flying. So a chest x-ray is equivalent to 5 hours flying. Or a few Brazil nuts. ![]() Not sure I believe all that, but some interesting sources of natural radiation if true nonetheless. |
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#10 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Originally posted by Rolfe [/i]
>> quote: -------------------------------------------------------------------------------- Originally posted by Rouser2 The question is, do mammograms cause more cancer deaths than they prevent? -------------------------------------------------------------------------------- >>At a wild guess, no. Rolfe. Oh, but a recent Danish study of previous studies on the alleged effectiveness of mammography, concludes that mammography is worthless in preventing breast cancer deaths. "There is no reliable evidence that regular mammograms reduce the risk of dying of breast cancer in women of any age, according to Danish researchers who performed an analysis of all of the major studies that have addressed the issue. " "The two most scientifically sound studies, which the authors called medium quality, found no reduction in breast cancer deaths among women who had regular mammograms. In contrast, the three studies considered poor quality reported, on average, a 32 percent reduction in breast cancer mortality. None of the five found that having mammograms reduced overall mortality." From: Analysis: Mammograms Don't Cut Cancer Death Risk Danish Researchers Find No Reliable Evidence in Major Studies to Support Medical Consensus By Susan Okie Washington Post Staff Writer Friday, October 19, 2001; Page A02 http://www.washingtonpost.com/ac2/wp...8705-2001Oct18 Thus, when you posit the fact that mammogram x-rays do indeed cause some cancers together with the proposition that mammogram screenings do not reduce overall mortality, then one must conclude that mammograms do indeed cause more cancer deaths than they prevent. Just another instance where Modern Medicine's "cure" is worse than the disease. Quack, quack!! -- Rouser |
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#11 |
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übernerd
Join Date: Nov 2003
Location: Very Low Earth orbit
Posts: 3,013
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The Bug Blog |
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#12 |
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Illuminator
Join Date: Dec 2002
Posts: 3,287
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Why don't they just take you to ultrasound first? It seems counterintuitive to smash a breast full of cysts in a mammogram machine. |
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#13 |
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übernerd
Join Date: Nov 2003
Location: Very Low Earth orbit
Posts: 3,013
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what i was told was that the mammograms are cheaper, since it uses existing machinery. the xrays are better at finding microcalcifications, which are a sign of cancer.
however, i suspect that as time passes, the ultrasound will get better techniques. i am always convinced that my boob will explode. yes guys, it's that bad. |
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The Bug Blog |
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#14 |
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Illuminator
Join Date: Nov 2002
Posts: 3,607
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Ouch, ouch, ouch. |
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#15 |
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Anti-homeopathy illuminati member
Join Date: Sep 2003
Location: NT 150 511
Posts: 34,340
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Quote:
I have a friend whose wife was picked up with a small breast lesion (now thankfully dealt with), who is also convinced that the HRT caused it. But in fact, although it exerted an effect, it's a relatively small effect. For any one given case, the chances are that the HRT didn't cause it, but you can't be sure. Most breast cancer is not familial. The more interesting question is whether my friend's wife would ever have experienced any actual trouble from the small ductal carcinoma insitu which was picked up at routine mammography, or whether it would never have progressed and all her stress and surgery were unnecesssary. She thinks, better safe than sorry. One other statistic I heard (though I don't off-hand know the source), is that the death rate from breast cancer for women taking HRT is lower, belived to be due to the fact that the known risk factor, though small, provided these women with more incentive to do the screening and the self-examination and so on, thus detected their tumours earlier, whether or not the HRT caused them. Rolfe. |
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"The way we vote will depend, ultimately, on whether we are persuaded to hope or to fear." - Aonghas MacNeacail, June 2012. |
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#16 |
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Ayay ashay ayay
Join Date: Apr 2003
Posts: 9,029
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Quote:
Now call me crazy, but I had always assumed detecting early stages of cancer, then treating the cancer if it was found would be beneficial. Silly me for being ignorant! I mean, when Grandma Yahweh had her mammogram 2 years ago, and then later treated for breast cancer, well who would I be to judge that this mammogram did actually help her. I mean, she could have just waited for the cancer to develope to terminal stage, but nooooo she just had to get a check before it would ever have a chance to reach that stage in development. And there there is Momma Yahweh, now she's had a history of medical problems. Oops, a few "abnormalities" (of the cancerous variety) were found, they were treated, and Momma Yahweh hasnt had a problem. And Aunt Yahweh, who can forget about her. A few cysts removed, they did not pose an immediate problem, but when my family has a pretty impressive history of breast and lung cancer, you never want to take too many risks. Silly me, thinking all these medical examinations designed for early detection of cancer were of any benefit. I am perfectly aware mammograms may miss tumors, but for every tumor they miss, they find 20 others. Mammograms (at about 50% sensitivity) are less efficient than sonography (90% sensitivity) (source: Pub-med), but that is not to say they are medically worthless. They save lives, and why you object to that is beyond me. So you managed to find some studies which extremely false data that happen to agree with you, well color me unimpressed. ‹^› |
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#17 |
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Graduate Poster
Join Date: Jul 2003
Posts: 1,588
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__________________
"Your ignorance makes me ill... " |
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#18 |
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Banned
Join Date: Sep 2002
Posts: 26,985
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Actually, Rouser, you have not even made a point at all. Your Danish report was on the efficacy of mammograms to detect cancer based on a meta-study of five (that's FIVE) previous studies of mammography efficacy.
Well, gee. I would be willing to suggest that mammography was introduced in each country it operates in only after it was rigourously scrutinised by many, MANY independent scientific studies that DID show that it was in some way effective at what it claims. After all, most of these mamograph screening programs are paid for by governments out of taxes, and the health budgets are notoriously placed at the bottom of the out-basket. Which means there has to be a really, REALLY good scientific case to be made to get the pollies to cough up even the tidbit of cash they have so far to make the screening possible. And if it EVER proved to be ineffective, I'm sure the money supply would dry up (have dried up) instantly. But it hasn't. Hmmmm... But I'm sure we all agree that clamping a woman's breast in a vice to take an X-ray image is painful, and that X-rays have a known but extremely low effect on initiating cancer (see above). But it has been proven since the 1940's that it is far more effective for the person and their family and the community that mammographs actually get done - Yahweh has given you direct evidence, and many of the rest of us can do the same. It is also clear that soon there may well be much better, more comfortable and even safer ways to detect in-body cancer and other illnesses. And when THEY become proven as more efficacious, the days of boob-crushing X-ray mammography will indeed end. |
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#19 |
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Penultimate Amazing
Join Date: Dec 2001
Location: The White Zone
Posts: 42,278
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Re: Do Mammograms Cause Cancer?
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1) You believe there were multiple assassins in Dealey Plaza. 2) You believe the moon landing was a hoax. 3) You believe vaccinations are part of some evil government plot. 4) You believe the current Mars landings are a hoax. 5) Now you seem to imply that mammograms cause cancer. Now, based upon #1-#5, we can conclude that you are an idiot. Therefore, if you say that mammograms cause cancer, it is obvious that they do not. See how that works? Moron. |
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If I see somebody with a gun on a plane? I'll kill him. |
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#20 |
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Philosopher
Join Date: Nov 2002
Location: Cymru
Posts: 8,265
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Re: Do Mammograms Cause Cancer?
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From their figures, 29 out of a total of 21,164 breast cancer cases MAY have been caused by screening
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I think that it's valuable to question whether a particualr treatment is effective. Thsi study was dorected at evaluating the risks. Looks like the process of chacking the effecacy of treatments is working as usual... |
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#21 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Originally posted by Yahweh [/i]
>>I am perfectly aware mammograms may miss tumors, but for every tumor they miss, they find 20 others And many of the cancerous tumors they "find" do not exist. -- Rouser |
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#22 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Originally posted by Zep [/i]
>>After all, most of these mamograph screening programs are paid for by governments out of taxes, and the health budgets are notoriously placed at the bottom of the out-basket. Which means there has to be a really, REALLY good scientific case to be made to get the pollies to cough up even the tidbit of cash they have so far to make the screening possible. And if it EVER proved to be ineffective, I'm sure the money supply would dry up (have dried up) instantly. Comment: Naivete squared. -- Rouser |
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#23 |
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Philosopher
Join Date: Nov 2002
Location: Cymru
Posts: 8,265
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The alternative being (in rouserworld) wait until the tumor is the size of a golf ball and then hope for a spontaneous remission. Medicine is NOT perfect, is it however demonstrably better than the alternative in almost all cases. |
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#24 |
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Ayay ashay ayay
Join Date: Apr 2003
Posts: 9,029
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Quote:
![]() *sniff sniff* I feel so loved! |
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#25 |
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Banned
Join Date: Sep 2002
Posts: 26,985
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Quote:
No government of any flavour is going to fork out for more health benefits than they can afford to keep the people happy. There is no monetary benefit involved - it is a "sink" of funds. So is education and public transport and similar. Why do you think so much of it is being forced into "private" hands these days?? Therefore the cheapest and most effective technologies will win ongoing funding approval. Technologies such as immunisation, and X-ray cancer screening, and so on, with proven track-records of effectiveness. And as I said, if a better, cheaper technology comes along then the old will be dropped ASAP. Examples abound, if you only care to look (!). |
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#26 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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posted by Zep [/i]
>>No government of any flavour is going to fork out for more health benefits than they can afford to keep the people happy. The US government does it all the time. I suspect so does the Austrialian government. Need has little to do with it. But greed, everything to do with it. -- Rouser |
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#27 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Re: Re: Do Mammograms Cause Cancer?
Originally posted by The Don [/i]
>>So checking whether there was a balance of benefit was outside the scope of their study quote: -------------------------------------------------------------------------------- Benefits include the earlier detection of cancers by radiological examinations and the possibility of early treatment, which probably allows more cure of cancers than radiological exposure is able to cause. -------------------------------------------------------------------------------- >>But of course this is just an assertion because checking whether there was a balance of benefit was outside the scope of their study But I provided that balance in reference to the Danish study of 2000 which studied several of the major, but flawed previous studies. No mortality benefit from mammograms at all. -- Rouser |
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#28 |
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Ayay ashay ayay
Join Date: Apr 2003
Posts: 9,029
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Quote:
Tis better to be silent and thought a fool, then to open your mouth and remove all doubt. No, big gummermant is not out to get us. All governments have one goal in mind: To be a tool of social good. In refusing to do this, citizens may overthrow the government, which they ought to do if their government is tyrannical, and a nation with no government is usually unstable, a nation with no government will likely descend to the status of "third-world". That hurt everyone. Governments are not greedy, they are your friend. If they were truely greedy, they could easily garnish the totality of your income above minimum wage. Your conspiracy theories do plenty in the way of failing to impress me. |
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#29 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Originally posted by Yahweh [/i]
>>I am perfectly aware mammograms may miss tumors, but for every tumor they miss, they find 20 others. Duh???? >>Mammograms (at about 50% sensitivity) are less efficient than sonography (90% sensitivity) (source: Pub-med), but that is not to say they are medically worthless. They save lives, and why you object to that is beyond me. Mammograms may save some lives, but they also kill. The question is, do they save more than they kill? >>So you managed to find some studies which extremely false data that happen to agree with you, well color me unimpressed. "Extremely false data??? How so? -- Rouser |
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#30 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Originally posted by BTox [/i]
>>You're in the same situation as your inane anti-vaccination claims. First, you have to quanitfy the number of cancers attributed to mammograms. You have no such data, just a guesstimate based partially on nuclear bomb survival data. A "guesstimate"??? So BTox has acquired a new word?? Ah, but not a "guestimate" at all but an extrapolation. A "guesstimate" is more like when Dr. Strangeloves like you pull numbers from out of the air as to how many deaths would occur had not this or that vaccine been administered. That's "guesstimate". -- Rouser |
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#31 |
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Ayay ashay ayay
Join Date: Apr 2003
Posts: 9,029
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Quote:
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They do not and cannot kill, they only offer mild pain but the benefits (knowing you're in proper health, or finding cancer before it has a chance to cause damage) are worth quite a bit more I would say.
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You know, a walk through a store with a wall of televisions poses a bigger cancer "risk" than a mammogram, perhaps we should be going after Big Media
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#32 |
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Penultimate Amazing
Join Date: Dec 2001
Location: The White Zone
Posts: 42,278
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And remember, he can also tell you how they faked the moon landing! |
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If I see somebody with a gun on a plane? I'll kill him. |
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#33 |
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Critical Thinker
Join Date: Oct 2002
Posts: 424
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Yet another toxic post. First, the number one killer of women, by a long way is heart disease. It is already known that a womans chance of dying from BC before age 65 in the US is only 5% for all causes of death. In other words, more women die in car accidents over that age group than BC. In the landmark CDC cancer study performed over 30 years, if you correct for cigarette smoking, sun bathing, and HIV infection, not only are cancer deaths declining across the board, but incidence of cancer is also declining (yep, even including those who get regular mammograms.) Further, even including smoking and HIV etc. our life expectancy is still going up. So should women be obsessed with BC? Not really, they should eat healthier, exercise more, get regular medical check ups and fight for safer driving conditions. Of course, much of health today is a lifestyle issue (snmoking, tanning, safe sex, diet, exercise etc,) and alternative gurus like to place the blame on "evil conventional medicine" or "energy imbalances" etc. Anything to shift the blame away from personal responsibility, which is what most people want to hear.
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#34 |
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Banned
Join Date: Sep 2002
Posts: 26,985
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#35 |
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Philosopher
Join Date: Nov 2002
Location: Cymru
Posts: 8,265
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Re: Re: Re: Do Mammograms Cause Cancer?
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Like the Swedish study http://www.medtech1.com/new_tech/new...ture.cfm/117/1 which indicates that
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Score one more for the medical community: - A study throws up new and controvertial evidence (past studies poorly performed - no evidence for effectiveness) - The medical community repsonds by taking criticisms on board - A better study is performed - The results are reviewed - They don't let the matter lie As opposed to the "alternative community" - An assertion is made - The assertion is maintained despite evidence to the contrary - All opposing evidence is ignored on the grounds that it has been planted as part of some conspiracy |
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#36 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Originally posted by Quasi [/i]
>>and alternative gurus like to place the blame on "evil conventional medicine" or "energy imbalances" etc. Anything to shift the blame away from personal responsibility, which is what most people want to hear. On the contrary, it is the Cancer Research Establishment which minimizes prevention in favor of ever seeking the magic bullet "cure". And the notion that conventional medicine such as x-rays and other radiation treatments as well as chemotherapy in fact causes cancer is indisputable. -- Rouser |
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#37 |
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Critical Thinker
Join Date: Nov 2003
Posts: 293
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NHS program screens women from their 50's in the UK every 3 years until the age of 60years.
3 years ago my Mother was free. Then she had her mammogram and the cancer showed up. I wouldn't say they cause any more. I agree with bug-girl, it is uncomfortable for the larger breasted women. I not look forward to having mine though mine mammogram-ed. Men should have the same then they would be more sympathetic. HRT trials have just been stopped in Switzerland(?) as it showed a unreasonable high rise in breast cancer rates to those who had the disease previous. The one thing that looks like started my Mothers grade3 breast cancer. Bad thing to stop trials on one hand, as HRT helps those women who suffer badly with hot flushes and bad menopauses. What is left for them? the other hand at least those testing are prepared to put lives of other a priority first. Oestrogen might be a more high probability in cancer causes than mammograms. |
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#38 |
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Suspended
Join Date: Oct 2001
Posts: 1,730
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Re: Re: Re: Re: Do Mammograms Cause Cancer?
Originally posted by The Don [/i]
>>Like the Swedish study http://www.medtech1.com/new_tech/ne...ature.cfm/117/1 which indicates that quote: -------------------------------------------------------------------------------- Women who get regular mammograms could reduce their risk of dying from breast cancer by 28 percent -------------------------------------------------------------------------------- 28 percent of what? No indication here as to whether the stated percentage is "relative" or "absolute,", is there??? -- Rouser |
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#39 |
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Penultimate Amazing
Join Date: Aug 2002
Location: Whithin earshot of the North Sea
Posts: 16,602
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Don't. Just don't. |
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#40 |
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Philosopher
Join Date: Nov 2002
Location: Cymru
Posts: 8,265
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Re: Re: Re: Re: Re: Do Mammograms Cause Cancer?
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Pick a worst case and demonstrate to me how this saves fewer lives than are lost by exposure to xrays from mammograms. Remember, number of cases potentially caused by xray exposure was 29
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