Quelques nouvelles et études en Cancérologie

" On peut espérer que dans 10 ou 15 années, le progrès médical fera de cette édition du manuel de la thérapeutique oncologique un document archaïque pour le Moyens age ». Robert E. Wittes, Oncologue, MD (1991) 

LE STANDARD RÉ-EXAMINÉ

Dans l'orthodoxie, le standard actuel pour le cancer du sein est la "lumpectomie" suivie de radiation et tamoxifen.

Or, le dernier congrès du American Society of Clinical Oncology (ASCO) a remis cette approche en question.  Des chercheurs de la  Massachusetts General Hospital à Boston ont étudié un groupe de femmes agées de plus de 70  ans qui ont eu leurs récepteurs d'estrogènes positives (er +) enlevés via l'ablation de la  tumeur. L'étude était fondé sur un groupe qui prenait du tamoxifen seul et l'autre le tamoxifen plus la radiothérapie.  Après plus de dix ans, les femmes qui prenait juste le tamoxifène ont eu à peu près les mêmes résultats que celles qui prenaient le tamoxifène et la radiothérapie ensemble. La survie était 63 pourcent avec seul le tamoxifen par rapport à 61 pourcent avec le rajout de la radiation.  Les auteurs de cette études ont conclu que "...l'addition de la radiation n'améliorait pas la survie" (CF., Hughes KS, et al. Lumpectomy plus tamoxifen with or without irradiation in women age 70 or older with early breast cancer. 2010 ASCO Annual Meeting. Oral Abstract Session, Breast Cancer - Local-Regional and Adjuvant Therapy. J Clin Oncol 28:15s, 2010 (suppl; abstr 507).

Meme la bible en matière de radiologie admettait une déficience en "...survie associée avec l'irridation du sein". (Perez, Carlos and Brady, Luther, eds. Principles and Practice of Radiation Oncology, Philadelphia: LWW, 4th ed., 2004, p. 1371).

LE LAIT ET LE CANCER DU SEIN

Une étude norwègienne en date de 1995 montrait que la consommation du lait augmentait le risque du cancer du sein.

“Consumers of 0.75 litres or more of full-fat milk daily had a relative risk of 2.91 compared with those who consumed 0.15 litres or less” (Gaard 1995). D'autres édutes ont contradit ce résultats. Mais elles étaient mal faites. Gaard M, Tretli S, Løken EB. Dietary fat and the risk of breast cancer: a prospective study of 25,892 Norwegian women. Int J Cancer. 1995;63(1):13-17.

 

Étude de cas.

 

Une géologiste, Jane Plant, diagnostiqué à l'age de 42 ans d'un cancer du sein a décidé de supprimer tout produits laitiers tout en adoptant un régime végétalien. Elle est arrivée a ce protocole après avoir perdu une partie de son corps suite à la cancérologie officient ( "... a radical mastectomy, three further operations, 35 radiotherapy treatments, several chemotherapy treatments and irradiation of my ovaries to induce the menopause.." cf son livre "Your Life in Your Hands").

Le rapport entre la diet et le cancer n'est pas nouveau .

"The American Cancer Society estimates that of the 500,000 cancer deaths that occur in the United States, about one-third can be attributed to dietary factors, with another third being caused by cigarette smoking," ( Phyllis A. Balch, Prescription for Nutritional Healing, 4th Edition).

 

UNE NOUVELLE ÉTUDE CONFIRME QUE LA "MASTECTOMIE PRÉVENTIVE" NE PRODUIT PAS DE "BÉNÉFICES"


"It's important for women to understand that, except for one subset of breast cancer patients, they don't need to do this," said lead author Isabelle Bedrosian of University of Texas M.D. Anderson Cancer Center. "Hopefully, it'll reassure patients wondering if they should."

Approximately 40,000 women die from breast cancer in the United States each year, and another 200,000 cases are diagnosed. Because cancer in one breast is known to increase the risk of cancer recurrence in the other breast, doctors are increasingly recommending that cancer survivors opt to have both breasts removed as a "preventive" measure. And women are opting for it in huge numbers, seeking the peace of mind that it is said to offer.

The number of preventive mastectomies in the United States increased two-and-a-half-fold between 1998 and 2003. Today, 11 percent of all women undergoing a mastectomy on a cancerous breast choose to have the non-cancerous breast removed as well. Analysts have attributed this increase to more advanced screening techniques that detect cancers smaller and earlier; popularization of genetic screening and the idea that some genes may predispose families to breast cancer; and wider public acceptance of plastic surgery combined with advances in reconstructive technology.

Yet while it has been strongly established that elective mastectomy does reduce the risk of breast-cancer recurrence, there has been no research to suggest that it actually lengthens a woman's life span.

"We have not had real data to guide us," Bedrosian said. "We can't sit down with a woman and say, 'If you do this, this is your expected benefit.' And when we don't have those data, then biases become the big drivers of decision making."

In the new study, published in the Journal of the National Cancer Institute, Bedrosian and colleagues analyzed the records of 107,106 women in the National Cancer Institute's Surveillance, Epidemiology and End Results registry. All the women had undergone a mastectomy to treat breast cancer of Stage III or lower; 8,902 had chosen to have a healthy breast removed, as well.

After controlling for other risk factors, the researchers found only a small difference in survival rates between women who had chosen to have two breasts removed and women who had chosen to have only one removed. Upon further analysis, they discovered that this benefit was only present in women under the age of 50 with estrogen receptor-negative, early-stage tumors. In this group, elective mastectomy increased the survival rate by 4.8 percent, amounting to just under five lives saved for every 100 surgeries.

Elective mastectomy provided no survival benefit to women outside this demographic.

The researchers believe that even when cancers recur, most women will not be killed by them but will instead die of other causes first. Only in women whose cancers lack estrogen receptors and who would otherwise have long lives ahead of them does recurrence appear to pose a serious threat to survival.

The most effective breast cancer drugs on the market are those that lower the body's production of estrogen, which fuels the growth of many cancers. Tumors that lack estrogen receptors do not depend on the hormone for their growth, however, meaning that women with these cancers cannot use the most effective drugs and tend to have higher mortality rates.

Breast-cancer specialist Larry Norton of Memorial Sloan-Kettering Cancer Center in New York City expressed skepticism about the study's methodology and cautioned against doctors and patients giving it too much weight.

"This is an observational study, and hence it is impossible to control for confounding variables," Norton said, "and should not be used for individual clinical decisionmaking."

Norton admitted, however, that ethics make it impossible to perform a true controlled study on the question, since such an experiment might end up increasing cancer mortality in one group of participants.

Bedrosian disputed Norton's criticism, noting that the researchers used rigorous statistical analysis and controlled well for interference from other variables. She believes that the conclusions are, in fact, strong enough to help women make better-informed decisions about elective mastectomy.

"We looked at this in multiple different ways, and we got the same answer every time. And the results make good clinical sense. That adds another level of reassurance," she said. "Our hope is that when women hear the numbers, they will take a second look and decide not to go forward with a preventive mastectomy [in their healthy breast] if it won't give them a survival benefit."

Victor Vogel, national vice president for research at the American Cancer Society, said the results suggest that women should wait a full year before going through with the removal of a healthy breast.

"In a younger woman with [estrogen receptor]-negative disease, an [elective} mastectomy may be considered," he said. "In the vast majority of women older than 50 with ER-positive disease, prudent waiting is probably the most appropriate."

Bedrosian said that the point of the study was not to impose "a uniform mandate" that women should never get the procedure, but that their decisions must be well informed.

"This is still a decision to be made by the patient after talking with her doctor," Bedrosian said.

"We hope this study helps women make better decisions [and] provides some reassurance that perhaps a [preventive] mastectomy is not necessary, perhaps overly aggressive and perhaps a bit too much."

Sources : http://www.chron.com/disp/story.mpl... http://www.medicalnewstoday.com/art... http://www.time.com/time/health/art....

A MASTOSE, C'EST QUOI ?


On qualifie sous le terme de mastose l' ensemble de diverses affections bénignes du sein non inflammatoires(kystes du sein, mammites sclérokystiques, polykystose mammaire). Ces affections sont souvent découvertes lors de mammographie, car elles sont inapparentes.
Il arrive parfois, en cas de troubles hormonaux, que des tensions douloureuses apparaissent en fin de cycle. La recherche montre que les cancers du sein surviennent en plus grande proportion sur les seins mastosiques que sur les seins normaux. Une surveillance régulière est donc nécessaire.


MAMMOGRAMS NOT SO GOOD

Like all x-rays, mammograms use doses of ionizing radiation to create this image. Radiologists then analyze the image for any abnormal growths. Despite continuous improvements and innovations, mammography has garnered a sizable opposition in the medical community because of an error rate that is still high and the amount of harmful radiation used in the procedure.

In a Swedish study of 60,000 women, 70 percent of the mammographically detected tumors weren't tumors at all. These "false positives" aren't just financial and emotional strains, they may also lead to many unnecessary and invasive biopsies. In fact, 70 to 80 percent of all positive mammograms do not, upon biopsy, show any presence of cancer.

At the same time, mammograms also have a high rate of missed tumors, or "false negatives." Dr. Samuel S. Epstein, in his book, The Politics Of Cancer, claims that in women ages 40 to 49, one in four instances of cancer is missed at each mammography. The (NCI) puts the false negative rate even higher at 40 percent among women ages 40-49. HIH spokespeople also admit that mammograms miss 10 percent of malignant tumors in women over 50. Researchers have found that breast tissue is denser among younger women, making it difficult to detect tumors. For this reason, false negatives are twice as likely to occur in premenopausal mammograms.

Many critics of mammography cite the hazardous health effects of radiation. In 1976, the controversy over radiation and mammography reached a saturation point. At that time mammographic technology delivered five to 10 rads (radiation-absorbed doses) per screening, as compared to 1 rad in current screening methods. In women between the ages of 35 and 50, each rad of exposureincreased the risk of breast cancerby one percent, according to Dr. Frank Rauscher, then-director of the NCI.

According to Russell L. Blaylock, MD, one estimate is that annual radiological breast exams increase the risk of breast cancer by two percent a year. So over 10 years the risk will have increased 20 percent. In the 1960s and 70s, women, even those who received 10 screeningsa year, were never told the risk they faced from exposure. In the midst of the 1976 radiation debate, Kodak a major manufacturer of mammography film, took out full-page ads in scientific journals entitled About breast cancer and x-rays.: A hopeful message from industryon a sober topic.

Despite better technology and decreased doses of radiation, scientists still claim mammography is a substantial risk. Dr. John W. Gofman, estimates that 75 percent of breast cancer could be prevented by avoiding or minimizing exposure to the ionizing radiation. This includes mammography, x-rays and other medical and dental sources.

Since mammographic screening was introduced, the incidence of a form of breast cancer called ductal carcinoma in situ (DCIS) has increased by 328 percent. Two hundred percent of this increase is allegedly due to mammography. In addition to harmful radiation, mammography may also help spread existing cancer cellsdue to the considerable pressure placed on the woman's breast during the procedure. According to some health practitioners, this compression could cause existing cancer cells to metastasize from the breast tissue.

Cancer research has also found a gene, called oncogene AC, that is extremely sensitive to even small doses of radiation. A significant percentage of women in the US have this gene, which could increase their risk of mammography-induced cancer. They estimate that 10,000 A-T carriers will die of breast cancer this year due to mammography.

The risk of radiation is apparently higher among younger women. The NCI released evidencethat, among women under 35, mammography could cause 75 cases of breast cancer for every 15 it identifies. Another Canadian study found a 52 percent increase in breast cancer mortality in young women given annual mammograms. Dr. Samuel Epstein also claims that pregnant women exposed to radiation could endanger their fetus. He advises against mammography during pregnancy because "the future risks of leukemia to your unborn child, not to mention birth defects, are just not worth it." Similarly, studies reveal that children exposed to radiation are more likely to develop breast cancer as adults .

New Screening Technologies

While screening is an important step in fighting breast cancer, many researchers are looking for alternatives to mammography. Burton Goldberg totes the safety and accuracy of new thermography technologies. Able to detect cancers at a minute physical stage of development, thermography does not use x-rays, nor is there any compression of the breast. Also important, new thermography technologies do not lose effectiveness with dense breast tissue, decreasing the chances of false-negative results.

Some doctors are now offering digital mammograms. Digital mammography is a mammography system in which x-ray film is replaced by solid-state detectors that convert x-rays into electric signals. Though radiation is still used, digital mammography requires a much smaller dose. The electrical signals are used to produce images that can be electronically manipulated; a physician can zoom in, magnify and optimize different parts of breast tissue without having to take an additional image.

The experts speak on mammograms and breast cancer:

Regular mammography of younger women increases their cancer risks. Analysis of controlled trials over the last decade has shown consistent increases in breast cancer mortality within a few years of commencing screening. This confirms evidence of the high sensitivity of the premenopausal breast, and on cumulative carcinogenic effects of radiation.
The Politics Of Cancer by Samuel S Epstein MD, page 539

In his book, "Preventing Breast Cancer," Dr. Gofinan says that breast cancer is the leading cause of death among American women between the ages of forty-four and fifty-five. Because breast tissue is highly radiation-sensitive, mammograms can cause cancer. The danger can be heightened by a woman's genetic makeup, preexisting benign breast disease artificial menopause, obesity, and hormonal imbalance.
Death By Medicine by Gary Null PhD, page 23

"The risk of radiation-induced breast cancer has long been a concern to mammographers and has driven the efforts to minimize radiation dose per examination," the panel explained. "Radiation can cause breast cancer in women, and the risk is proportional to dose. The younger the woman at the time of exposure, the greater her lifetime risk for breast cancer.
Under The Influence Modern Medicine by Terry A Rondberg DC, page 122

Furthermore, there is clear evidence that the breast, particularly in premenopausal women, is highly sensitive to radiation, with estimates of increased risk of breast cancer of up to 1% for every rad (radiation absorbed dose) unit of X-ray exposure. This projects up to a 20% increased cancer risk for a woman who, in the 1970s, received 10 annual mammograms of an average two rads each. In spite of this, up to 40% of women over 40 have had mammograms since the mid-1960s, some annually and some with exposures of 5 to 10 rads in a single screening from older, high-dose equipment.
The Politics Of Cancer by Samuel S Epstein MD, page 537

No less questionable—or controversial—has been the use of X rays to detect breast cancer: mammography. The American Cancer Society initially promoted the procedure as a safe and simple way to detect breast tumors early and thus allow women to undergo mastectomies before their cancers had metastasized.
The Cancer Industry by Ralph W Moss, page 23

The American Cancer Society, together with the American College of Radiologists, has insisted on pursuing largescale mammography screening programs for breast cancer, including its use in younger women, even though the NCI and other experts are now agreed that these are likely to cause more cancers than could possibly be detected.
The Politics Of Cancer by Samuel S Epstein MD, page 291

A number of "cancer societies" argued, saying the tests — which cost between $50-200 each - - are a necessity for all women over 40, despite the fact that radiation from yearly mammograms during ages 40-49 has been estimated to cause one additional breast cancer death per 10,000 women.
Under The Influence Modern Medicine by Terry A Rondberg DC, page 21

Mammograms Add to Cancer Risk—mammography exposes the breast to damaging ionizing radiation. John W. Gofman, M.D., Ph.D., an authority on the health effects of ionizing radiation, spent 30 years studying the effects of low-dose radiation on humans. He estimates that 75% of breast cancer could be prevented by avoiding or minimizing exposure to the ionizing radiation from mammography, X rays, and other medical sources. Other research has shown that, since mammographic screening was introduced in 1983, the incidence of a form of breast cancer called ductal carcinoma in situ (DCIS), which represents 12% of all breast cancer cases, has increased by 328%, and 200% of this increase is due to the use of mammography.69 In addition to exposing a woman to harmful radiation, the mammography procedure may help spread an existing mass of cancer cells. During a mammogram, considerable pressure must be placed on the woman's breast, as the breast is squeezed between two flat plastic surfaces. According to some health practitioners, this compression could cause existing cancer cells to metastasize from the breast tissue.
Alternative Medicine by Burton Goldberg, page 588

In fact the benefits of annual screening to women age 40 to 50, who are now being aggressively recruited, are at best controversial. In this age group, one in four cancers is missed at each mammography. Over a decade of pre-menopausal screening, as many as three in 10 women will be mistakenly diagnosed with breast cancer. Moreover, international studies have shown that routine premenopausal mammography is associated with increased breast cancer death rates at older ages. Factors involved include: the high sensitivity of the premenopausal breast to the cumulative carcinogenic effects of mammographic X-radiation; the still higher sensitivity to radiation of women who carry the A-T gene; and the danger that forceful and often painful compression of the breast during mammography may rupture small bloodvessels and encourage distant spread of undetected cancers.
The Politics Of Cancer by Samuel S Epstein MD, page 540

Since a mammogram is basically an x-ray (radiation) of the breast, I do not recommend mammograms to my patients for two reasons: 1) Few radiologists are able to read mammogams correctly, therefore limiting their effectiveness. Even the man who developed this technique stated on national television that only about six radiologists in the United States could read them correctly. 2) In addition, each time the breasts are exposed to an x-ray, the risk of breast cancer increases by 2 percent.
The Hope of Living Cancer Free by Francisco Contreras MD, page 104

Mammography itself is radiation: an X-ray picture of the breast to detect a potential tumor. Each woman must weigh for herself the risks and benefits of mammography. As with most carcinogens, there is a latency period or delay between the time of irradiation and the occurrence of breast cancer. This delay can vary up to decades for different people. Response to radiation is especially dramatic in children. Women who received X-rays of the breast area as children have shown increased rates of breast cancer as adults. The first increase is reflected in women younger than thirty-five, who have early onset breast cancer. But for this exposed group, flourishing breast cancer rates continue for another forty years or longer.
Eat To Beat Cancer by J Robert Hatherill, page 132

The use of women as guinea pigs is familiar. There is revealing consistency between the tamoxifen trial and the 1970s trial by the NCI and American Cancer Society involving high-dose mammography of some 300,000 women. Not only is there little evidence of effectiveness of mammography in premeno-pausal women, despite NCI's assurances no warnings were given of the known high risks of breast cancer from the excessive X-ray doses then used. There has been no investigation of the incidence of breast cancer in these high-risk women. Of related concern is the NCI's continuing insistence on premeno-pausal mammography, in spite of contrary warnings by the American College of Physicians and the Canadian Breast Cancer Task Force and in spite of persisting questions about hazards even at current low-dose exposures. These problems are compounded by the NCI's failure to explore safe alternatives, especially transillumination with infrared light scanning.
The Politics Of Cancer by Samuel S Epstein MD, page 544

High Rate of False Positives—mammography's high rate of false-positive test results wastes money and creates unnecessary emotional trauma. A Swedish study of 60,000 women, aged 40-64, who were screened for breast cancer revealed that of the 726 actually referred to oncologists for treatment, 70% were found to be cancer free. According to The Lancet, of the 5% of mammograms that suggest further testing, up to 93% are false positives. The Lancet report further noted that because the great majority of positive screenings are false positives, these inaccurate results lead to many unnecessary biopsies and other invasive surgical procedures. In fact, 70% to 80% of all positive mammograms do not, on biopsy, show any presence of cancer.71 According to some estimates, 90% of these "callbacks" result from unclear readings due to dense overlying breast tissue.72
Alternative Medicine by Burton Goldberg, page 588

"Radiation-related breast cancers occur at least 10 years after exposure," continued the panel. "Radiation from yearly mammograms during ages 40-49 has been estimated to cause one additional breast cancer death per 10,000 women."
Under The Influence Modern Medicine by Terry A Rondberg DC, page 122

According to the National Cancer Institute, there is a high rate of missed tumors in women ages 40-49 which results in 40% false negative test results. Breast tissue in younger women is denser, which makes it more difficult to detect tumours, so tumours grow more quickly in younger women, and tumours may develop between screenings. Because there is no reduction in mortality from breast cancer as a direct result of early mammogram, it is recommended that women under fifty avoid screening mammograms although the American Cancer Society still recommends a mammogram every two years for women age 40-49. Dr. Love states, "We know that mammography works and will be a lifesaving tool for at least 30%."
Treating Cancer With Herbs by Michael Tierra ND, page 467

Equivocal mammogram results lead to unnecessary surgery, and the accuracy rate of mammograms is poor. According to the National Cancer Institute (NCI), in women ages 40-49, there is a high rate of "missed tumors," resulting in 40% false-negative mammogram results. Breast tissue in younger women is denser, which makes it more difficult to detect tumors, and tumors grow more quickly in younger women, so cancer may develop between screenings.
Alternative Medicine by Burton Goldberg, page 973

Even worse, spokespeople for the National Institutes of Health (NIH) admit that mammograms miss 25 percent of malignant tumors in women in their 40s (and 10 percent in older women). In fact, one Australian study found that more than half of the breast cancers in younger women are not detectable by mammograms.
Underground Cures by Health Sciences Institute, page 42

Whatever you may be told, refuse routine mammograms to detect early breast cancer, especially if you are premenopausal. The X-rays may actually increase your chances of getting cancer. If you are older, and there are strong reasons to suspect that you may have breast cancer, the risks may be worthwhile. Very few circumstances, if any, should persuade you to have X-rays taken if you are pregnant. The future risks of leukaemia to your unborn child, not to mention birth defects, are just not worth it.
The Politics Of Cancer by Samuel S Epstein MD, page 305

Other medical research has shown that the incidence of a form of breast cancer known as ductal carcinoma in situ (DCIS), which accounts for 12% of all breast cancer cases, increased by 328% — and 200% of this increase is due to the use of mammography!
Under The Influence Modern Medicine by Terry A Rondberg DC, page 123

As the controversy heated up in 1976, it was revealed that the hundreds of thousands of women enrolled in the program were never told the risk they faced from the procedure (ibid.). Young women faced the greatest danger. In the thirty-five- to fifty-year-old age group, each mammogram increased the subject's chance of contracting breast cancer by 1 percent, according to Dr. Frank Rauscher, then director of the National Cancer Institute (New York Times, August 23, 1976).
The Cancer Industry by Ralph W Moss, page 24

Because there is no reduction in mortality from breast cancer as a direct result of early mammograms, it is recommended that women under 50 avoid screening mammograms, although the American Cancer Society is still recommending a mammogram every two years for women ages 40-49. The NCI recommends that, after age 35, women perform monthly breast self-exams. For women over 50, many doctors still advocate mammograms. However, breast self-exams and safer, more accurate technologies such as thermography should be strongly considered as options to mammography.
Alternative Medicine by Burton Goldberg, page 973

In the midst of the debate, Kodak took out full-page ads in scientific journals entitled "About breast cancer and X-rays: A hopeful message from industry on a sober topic" (see Science, July 2, 1976). Kodak is a major manufacturer of mammography film.
The Cancer Industry by Ralph W Moss, page 24

The largest and most credible study ever done to evaluate the impact of routine mammography on survival has concluded that routine mammograms do significantly reduce deaths from breast cancer. Scientists in the United States, Sweden, Britain, and Taiwan compared the number of deaths from breast cancer diagnosed in the 20 years before mammogram screening became available with the number in the 20 years after its introduction. The research was based on the histories and treatment of 210,000 Swedish women ages 20 to 69. The researchers found that death from breast cancer dropped 44 percent in women who had routine mammography. Among those who refused mammograms during this time period there was only a 16 percent reduction in death from this disease (presumably the decrease was due to better treatment of the malignancy).
Dr Isadore Rosenfeld's Breakthrough Health By Isadore Rosenfeld MD, page 47

In 1993—seventeen years after the first pilot study—the biochemist Mary Wolff and her colleagues conducted the first carefully designed, major study on this issue. They analyzed DDE and PCB levels in the stored blood specimens of 14,290 New York City women who had attended a mammography screening clinic. Within six months, fifty-eight of these women were diagnosed with breast cancer. Wolff matched each of these fifty-eight women to control subjects—women without cancer but of the same age, same menstrual status, and so on—who had also visited the clinic. The blood samples of the women with breast cancer were then compared to their cancer-free counterparts.
Living Downstream by Sandra Steingraber PhD, page 12

One reason may be that mammograms actually increase mortality. In fact numerous studies to date have shown that among the under-50s, more women die from breast cancer among screened groups than among those not given mammograms. The results of the Canadian National Breast Cancer Screening Trial published in 1993, after a screen of 50,000 women between 40-49, showed that more tumors were detected in the screened group, but not only were no lives saved but 36 percent more women died from
The Cancer Handbook by Lynne McTaggart, page 57

One Canadian study found a 52 percent increase in breast cancer mortality in young women given annual mammograms, a procedure whose stated purpose is to prevent cancer. Despite evidence of the link between cancer and radiation exposure to women from mammography, the American Cancer Society has promoted the practice without reservation. Five radiologists have served as ACS presidents.53
When Healing Becomes A Crime by Kenny Ausubel, page 233

Premenopausal women carrying the A-T gene, about 1.5 percent of women, are more radiation sensitive and at higher cancer risk from mammography. It has been estimated that up to 10,000 breast cancer cases each year are due to mammography of A-T carriers.
The Politics Of Cancer by Samuel S Epstein MD, page 539

A study reported that mammography combined with physical exams found 3,500 cancers, 42 percent of which could not be detected by physical exam. However, 31 percent of the tumors were noninfiltrating cancer. Since the course of breast cancer is long, the time difference in cancer detected through mammography may not be a benefit in terms of survival.
Woman's Encyclopedia Of Natural Healing by Dr Gary Null, page 86

The American College of Obstetricians and Gynecologists also has called for more mammograms among women over 50. However, constant screening still can miss breast cancer. mammograms are at their poorest in detecting breast cancer when the woman is under 50.
The Cancer Handbook by Lynne McTaggart, page 53

Despite its shortcomings, every woman between the ages of fifty and sixty-nine should have one every year. I also recommend them annually for women over seventy, even though early detection isn't as important for the slow-growing form of breast cancer they tend to get. One mammogram should probably be taken at age forty to establish a baseline, but how often women should have them after that is debatable. Some authorities favor annual screening. Others feel there's not enough evidence to support screening at all before fifty. Still others believe that every two years is sufficient. I lean toward having individual women and their doctors go over the pros and cons and make their own decisions. Finally, a mammogram is appropriate at any age if a lump has been detected.
The Longevity Code By Zorba Paster MD, page 234 For breast cancer, thermography offers a very early warning system, often able to pinpoint a cancer process five years before it would be detectable by mammography. Most breast tumors have been growing slowly for up to 20 years before they are found by typical diagnostic techniques. Thermography can detect cancers when they are at a minute physical stage of development, when it is still relatively easy to halt and reverse the progression of the cancer. No rays of any kind enter the patient's body; there is no pain or compressing of the breasts as in a mammogram. While mammography tends to lose effectiveness with dense breast tissue, thermography is not dependent upon tissue densities.
Alternative Medicine by Burton Goldberg, page 587


 

VITAMIN D AND CANCER

 

New research conducted at the Creighton University School of Medicine in Nebraska has revealed that supplementing with vitamin D and calcium can reduce your risk of cancer by an astonishing 77 percent. This includes breast cancer, colon cancer, skin cancer and other forms of cancer.

The study involved 1,179 healthy women from rural Nebraska. One group of women was given calcium (around 1500 mg daily) and vitamin D (1100 IU daily) while another group was given placebo. Over four year, the group receiving the calcium and vitamin D supplements showed a 60 percent decrease in cancers. Considering just the last three years of the study reveals an impressive 77 percent reduction in cancerdue to supplementation. (The full press release of this study is included below. It provides more details about the findings.)

Note that these astonishing effects were achieved on what many nutritionists consider to be a low dose of vitamin D. Exposure to sunlight, which creates even more vitamin D in the body, was not tested or considered, and the quality of the calcium supp was likely not as high as it could have been (it was probably calcium carbonate and not high-grade calcium malate, aspartate or similar forms). What does all this mean? It means that if you take high-quality calcium supplements and get lots of natural sunlight exposure or take premium vitamin D supplements , you could easily have a greater reduction than the 77 percent reduction recorded in this study.

Most Americans and others are not taking enough vitamin D, a fact that may put them at significant risk for developing cancer, according to a landmark study conducted by Creighton University School of Medicine.

The four-year, randomized study followed 1,179 healthy, postmenopausal women from rural eastern Nebraska.* Participants taking calcium, as well as a quantity of vitamin D3 nearly three times the U.S. government’s Recommended Daily Amount (RDA) for middle-age adults, showed a dramatic 60 percent or greater reduction in cancer risk than women who did not get the vitamin.

The results of the study, conducted between 2000 and 2005, were reported in the June 8 online edition of the American Journal of Clinical Nutrition.

“The findings are very exciting. They confirm what a number of vitamin D proponents have suspected for some time but that, until now, have not been substantiated through clinical trial,” said principal investigator Joan Lappe, Ph.D., R.N., Creighton professor of medicine and holder of the Criss/Beirne Endowed Chair in the School of Nursing. “Vitamin D is a critical tool in fighting cancer as well as many other diseases.”

Other Creighton researchers involved in the study included Robert Recker, M.D.; Robert Heaney, M.D.; Dianne Travers-Gustafson, M.S.; K. Michael Davies, Ph.D,; and Gleb Haynatzki, Ph.D.

Research participants were all 55 years and older and free of known cancers for at least 10 years prior to entering the Creighton study. Subjects were randomly assigned to take daily dosages of 1,400-1,500 mg supplemental calcium, 1,400-1,500 mg supplemental calcium plus 1,100 IU of vitamin D3, or placebos. National Institutes of Health funded the study.

Over the course of four years, women in the calcium/vitamin D3 group experienced a 60 percent decrease in their cancer risk than the group taking placebos.

On the premise that some women entered the study with undiagnosed cancers, researchers then eliminated the first-year results and looked at the last three years of the study. When they did that, the results became even more dramatic with the calcium/vitamin D3 group showing a startling 77 percent cancer-risk reduction

In the three-year analysis, there was no statistically significant difference in cancer incidence between participants taking placebos and those taking just calcium supplements.

Through the course of the study, 50 participants developed nonskin cancers, including breast, colon, lung and other cancers.

Lappe said further studies are needed to determine whether the Creighton research results apply to other populations, including men, women of all ages, and different ethnic groups. While the study was open to all ethnic groups, all participants were Caucasian, she noted.

There is a growing body of evidence that a higher intake of vitamin D may be helpful in the prevention and treatment of cancer, high blood pressure, fibromyalgia, diabetes mellitus, multiple sclerosis, and rheumatoid arthritis and other diseases.

Humans make their own vitamin D3 when they are exposed to sunlight. In fact, only 10-15 minutes a day in a bright summer sun creates large amounts of the vitamin, Lappe said. However, people need to exercise caution since the sun’s ultraviolet B rays also can cause skin cancer; sunscreen blocks most vitamin D production.

In addition, the latitude at which you live and your ancestry also influence your body’s ability to convert sunlight into vitamin D. People with dark skin have more difficulty making the vitamin. Persons living at latitudes north of the 37th parallel – Omaha is near the 41st parallel – cannot get their vitamin D naturally during the winter months because of the sun’s angle.

Experts generally agree that the RDA** for vitamin D needs to be increased substantially, however there is debate about the amount. Supplements are available in two forms – vitamin D2 and vitamin D3. Creighton researchers recommend vitamin D3 , because it is more active and thus more effective in humans.

* Study participants came from the Nebraska counties of Douglas, Colfax, Cuming, Dodge, Saunders, Washing

ton, Sarpy, Burt and Butler. ** RDA recommendations for vitamin D are 200 IU/d, birth-age 50; 400 IU/d, 50-70 years; and 600 IU/d, 70 years and older.

posted 06/08/07

 

 

Preventing Breast Cancer -- In-Depth Doctor's Interview

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Dans les vallées du Tibet et Mongolie, le goji est honoré pendant deux semaines chaque année. Des études montrent qu'un bon nombre de ces habitants vivent plus de cent ans sans maladies chroniques. Toutes les variétés du goji contiennent les acides aminées essentielles et un combinatoire puissant de minéraux, de polysaccharides, carotenoides, anthocyanines et autres phyto-nutrients utiles en revitalisation cellulaire. Nous en avons plantés le potager.

 

En matière de immuno-stimulation et de cancérologie holistique, voir l'echinacée ,la sanguinaire, l'ortie, la renouéedes oiseaux, la plante pau d'arco (lapacho), l'artemisia, les racines de "burdock, ginseng, ginger ou curcuma, le cat's claw et beaucoup d'autres plantes que nous passerons en revue lors de ce stage.

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Vigne Chasselas doré