October is Breast Cancer Awareness Month. A recent article in the Arab Times Online reports that deaths from breast cancer among women in Kuwait are considered the world’s highest due to “a lack of awareness and delay in detection of the disease”. Women in Kuwait need to be better informed about two aspects of breast cancer: how to prevent it, and ways in which breast cancer can be detected early on.
What increases your chances of getting breast cancer?
The following factors will increase your chances of getting breast cancer:
Not Breastfeeding
The importance of breastfeeding cannot be underestimated as a factor in breast cancer prevention. Breastfeeding prevents breast cancer in the mother who breastfeeds as well as in the daughter whom she breastfeeds.
The longer a mother breastfeeds, the greater her chances of avoiding breast cancer. In a study published this year, scientists found observed a lower proportion of breast cancer among women who breastfed 7 or more months.
A study published in 2010 found a 66.3% reduction in breast cancer risk in women who breastfed for 12-23 months, 87.4% reduction in 24-35 months and 94% reduction in 36-47 months categories. A study published in 2009 found that failure to breastfeed was associated with an increased incidence of premenopausal breast cancer.
A 2002 meta-analysis published in Lancet found that the shorter amount of time a women breastfed, the less they were protected against breast cancer. The study concluded that the lack of or short lifetime duration of breastfeeding typical of women in developed countries made a major contribution to the high incidence of breast cancer in those countries.
Smoking
Smoking is associated with a modest increase in the risk of breast cancer.
Lack of exercise
Not exercising regularly probably increases your chances of getting breast cancer.
Researchers in China and the United States concluded from a study of about 3,000 women that those who weren't burning calories through activity were more than twice as likely to develop breast cancer than those who maintain their weight through regular exercise.
Poor eating habits
Eating a diet rich in fruits and vegetables will reduces you risk of ever getting breast cancer or of having a recurrence of breast cancer. In particular, total vegetable and fruit intake has been found to be inversely associated with breast cancer risk. Almost all fruits and vegetables have anti-cancer activity. Vegetables most known for their anti-cancer
properties are garlic, onions, broccoli, cabbage, kale, brussels sprouts and greens, carrots,
celery, cilantro, parsley and parsnips, tomatoes, peppers, flax seeds, citrus, and soy.
Early Detection of Breast Cancer
Are Breast Self-Examinations Worth Doing?
Breast self-examination (BSE) involves the woman herself looking at and feeling
each breast for possible lumps, distortions or swelling.
Regular and frequent BSE was once promoted heavily as a means of finding cancer at a more curable stage, but studies have not found that it is effective in preventing late stage breast cancer. In fact, some argue that BSEs can actually cause harm through through needless biopsies and surgery.
The World Health Organization continues to recommend the practice of BSE as a way to empower women to take responsibility for their own health, but their is no evidence that this practice actually prevents late stage cancer.
Routine Mammograms: More Harm than Good?
A mammogram is a low-energy-X-ray used to examine the breast. It is used as a diagnostic and a screening tool.
According to conventional medical wisdom, women over the age of 40 should get a routine mammogram every two years. The reasoning is that mammograms can detect breast cancer early enough to treat it, before it becomes fatal.
Recent studies have brought the routine use of mammograms into doubt. A Danish study this year found that up to a quarter of breast cancer tumors detected by mammograms are over-diagnosed, and would have never caused any cancer symptoms had they remained untreated.
Researchers compared the number of breast cancer cases in women who had been offered mammogram screening to those not offered mammogram screening. The researchers had predicted that if mammograms were beneficial, there should be lower rates of late-stage breast cancer cases among women who had undergone mammogram screening, because early detection by mammogram would prevent late-stage breast cancer.
The findings, however, showed was no significant reduction in late-stage breast cancer among women who had undergone mammogram screening, but instead a significant number of over-diagnoses. They found that while mammogram screening prevented one death for every 2,500 women who had undergone screening, about six to ten women were treated for a benign cancer that would have never caused symptoms.
As a result of this and earlier studies, Health Canada has stopped recommending routine mammograms for all women under 50, and limits routine mammograms to women 50 and over and to women under 50 who have a history of breast cancer in the family.
Early Detection of Breast Cancer
Are Breast Self-Examinations Worth Doing?
Breast self-examination (BSE) involves the woman herself looking at and feeling
each breast for possible lumps, distortions or swelling.
Regular and frequent BSE was once promoted heavily as a means of finding cancer at a more curable stage, but studies have not found that it is effective in preventing late stage breast cancer. In fact, some argue that BSEs can actually cause harm through through needless biopsies and surgery.
The World Health Organization continues to recommend the practice of BSE as a way to empower women to take responsibility for their own health, but their is no evidence that this practice actually prevents late stage cancer.
Routine Mammograms: More Harm than Good?
A mammogram is a low-energy-X-ray used to examine the breast. It is used as a diagnostic and a screening tool.
According to conventional medical wisdom, women over the age of 40 should get a routine mammogram every two years. The reasoning is that mammograms can detect breast cancer early enough to treat it, before it becomes fatal.
Recent studies have brought the routine use of mammograms into doubt. A Danish study this year found that up to a quarter of breast cancer tumors detected by mammograms are over-diagnosed, and would have never caused any cancer symptoms had they remained untreated.
Researchers compared the number of breast cancer cases in women who had been offered mammogram screening to those not offered mammogram screening. The researchers had predicted that if mammograms were beneficial, there should be lower rates of late-stage breast cancer cases among women who had undergone mammogram screening, because early detection by mammogram would prevent late-stage breast cancer.
The findings, however, showed was no significant reduction in late-stage breast cancer among women who had undergone mammogram screening, but instead a significant number of over-diagnoses. They found that while mammogram screening prevented one death for every 2,500 women who had undergone screening, about six to ten women were treated for a benign cancer that would have never caused symptoms.
As a result of this and earlier studies, Health Canada has stopped recommending routine mammograms for all women under 50, and limits routine mammograms to women 50 and over and to women under 50 who have a history of breast cancer in the family.
So what can I do?
The upshot of all of these studies is that you can do a lot to prevent breast cancer:
breastfeed, donʼt smoke, exercise, and eat healthy food. Also, be aware of your own family history and possible genetic predispositions. Until scientists develop better tools for detecting and someday curing breast cancer, prevention may be more effective than early detection.
Sources:
http://www.arabtimesonline.com/NewsDetails/tabid/96/smid/414/ArticleID/171901/reftab/
36/Default.aspx
Kalager M, Adami HO, Bretthauer M, Tamimi RM, Ann. Intern. Med. 2012 Apr 3;156(7): 491-9. Overdiagnosis of invasive breast cancer due to mammography screening: results from the Norwegian screening program. http://www.ncbi.nlm.nih.gov/pubmed/22473436
Alison Stuebe, Rev Obstet Gynecol. 2009 Fall; 2(4): 222–231. The Risks of not Breastfeeding for Mothers and Infants. http://www.ncbi.nlm.nih.gov/pmc/articles/ PMC2812877/
Lancet. 2002 Jul 20;360(9328):187-95.,
Xue F, Willett WC, Rosner BA, Hankinson SE, Michels KB.Arch Intern Med. 2011 Jan 24;171(2):125-33. Cigarette Smoking and the Incidence of Breast Cancer. http:// www.ncbi.nlm.nih.gov/pubmed/21263102
Awatef M, Olfa G, Imed H, Kacem M, Imen C, Rim C, Mohamed B, Slim BA. Cancer Causes Control. 2010 Mar;21(3):393-7. Breastfeeding reduces breast cancer risk: a case- control study in Tunisia. http://www.ncbi.nlm.nih.gov/pubmed/19921444
De Silva M, Senarath U, Gunatilake M, Lokuhetty D., Cancer Epidemiol. 2010 Jun;34(3): 267-73. Epub 2010 Mar 24. Prolonged breastfeeding reduces risk of breast cancer in Sri Lankan women: a case-control study. http://www.ncbi.nlm.nih.gov/pubmed/20338838
Carmen et. al. PLoS One. 2012; 7(7): e40543. Breast Feeding, Parity and Breast Cancer Subtypes in a Spanish Cohort
Malin A et al. Cancer Epidemiol Biomarkers Prev. 2005 Jun;14(6):1496-501. Energy Balance and Breast Cancer Risk. http://www.ncbi.nlm.nih.gov/pubmed/15941962
Zhang et al. Int J Cancer. 2009 Jul 1;125(1):181-8. Greater vegetable and fruit intake is associated with a lower risk of breast cancer among Chinese women. http:// www.ncbi.nlm.nih.gov/pubmed/19358284
http://www.who.int/cancer/detection/breastcancer/en/index3.html
Kösters JP, Gøtzsche PC. Cochrane Database Syst Rev. 2003;(2):CD003373. Regular self-examination or clinical examination for early detection of breast cancer. http:// www.ncbi.nlm.nih.gov/pubmed/12804462
Sources:
http://www.arabtimesonline.com/NewsDetails/tabid/96/smid/414/ArticleID/171901/reftab/
36/Default.aspx
Kalager M, Adami HO, Bretthauer M, Tamimi RM, Ann. Intern. Med. 2012 Apr 3;156(7): 491-9. Overdiagnosis of invasive breast cancer due to mammography screening: results from the Norwegian screening program. http://www.ncbi.nlm.nih.gov/pubmed/22473436
Alison Stuebe, Rev Obstet Gynecol. 2009 Fall; 2(4): 222–231. The Risks of not Breastfeeding for Mothers and Infants. http://www.ncbi.nlm.nih.gov/pmc/articles/ PMC2812877/
Lancet. 2002 Jul 20;360(9328):187-95.,
Xue F, Willett WC, Rosner BA, Hankinson SE, Michels KB.Arch Intern Med. 2011 Jan 24;171(2):125-33. Cigarette Smoking and the Incidence of Breast Cancer. http:// www.ncbi.nlm.nih.gov/pubmed/21263102
Awatef M, Olfa G, Imed H, Kacem M, Imen C, Rim C, Mohamed B, Slim BA. Cancer Causes Control. 2010 Mar;21(3):393-7. Breastfeeding reduces breast cancer risk: a case- control study in Tunisia. http://www.ncbi.nlm.nih.gov/pubmed/19921444
De Silva M, Senarath U, Gunatilake M, Lokuhetty D., Cancer Epidemiol. 2010 Jun;34(3): 267-73. Epub 2010 Mar 24. Prolonged breastfeeding reduces risk of breast cancer in Sri Lankan women: a case-control study. http://www.ncbi.nlm.nih.gov/pubmed/20338838
Carmen et. al. PLoS One. 2012; 7(7): e40543. Breast Feeding, Parity and Breast Cancer Subtypes in a Spanish Cohort
Malin A et al. Cancer Epidemiol Biomarkers Prev. 2005 Jun;14(6):1496-501. Energy Balance and Breast Cancer Risk. http://www.ncbi.nlm.nih.gov/pubmed/15941962
Zhang et al. Int J Cancer. 2009 Jul 1;125(1):181-8. Greater vegetable and fruit intake is associated with a lower risk of breast cancer among Chinese women. http:// www.ncbi.nlm.nih.gov/pubmed/19358284
http://www.who.int/cancer/detection/breastcancer/en/index3.html
Kösters JP, Gøtzsche PC. Cochrane Database Syst Rev. 2003;(2):CD003373. Regular self-examination or clinical examination for early detection of breast cancer. http:// www.ncbi.nlm.nih.gov/pubmed/12804462
Baxter N (June 2001). "Preventive health care, 2001 update: should women be routinely taught breast self-examination to screen for breast cancer?". CMAJ 164 (13): 1837–46. PMC 81191. PMID 11450279.
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