dear doctor

link may help

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4135458/

regards

Difficult to say without a long lasting multidisciplinary study focussing on this element and excluding other risk factors. My mother fed 5 children but died of breast cancer at the age of 47. عليها رحمة الله

dear doctor

link may help

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4135458/

regards

No, I don't believe that breastfeeding reduces the risk of breast cancer.

Dear Dr. Nabel kadum abd-ali

Just now I read the said article. Please see the following Ke words of the review article:

Keywords: Breast cancer epidemic, Delayed childbearing, Breast cancer susceptibility window, Hormone replacement therapy, Oral contraceptives, Levonorgestrel, Induced abortion, Breast feeding.

As per the article, non breast feeding due to abortion has some effects on breast cancer.

But nothing is written there on effect of breast feeding on Breast Cancer.

Regards.

Hi

Happy new year

Very good question

I think it is reduces the chance of breast cancer.

Sorry I don't have any article about this now,

But I hope to get as this article.

Regards

A study at the University of Columbia suggests that breast cancer risk is higher for women who have not breastfed more than once a half of the woman who breastfed their baby.

A British study confirms that breastfeeding a woman for one year reduces the risk of breast cancer.

Breastfeeding protects the mother from breast cancer by modifying the secretion of female hormones in the body, thus reducing the risk of breast cancer. In addition, breastfeeding helps to secrete special compounds that protect the breast cells from the disease.

Dear Dr. Omran,

Please add the related references so that all of us can read them.

Thanks.

Breastfeeding lowers your breast cancer risk

https://www.mdanderson.org/publications/focused-on-health/october-2014/breastfeeding-breast-cancer-prevention.html

i dont think so

Thank you, Dr. Gadallah.

The article is not a published article of any journal. But it seems it contain many important information. The main portion of the article is pasted below.

“Research shows mothers who breastfeed lower their risk of pre- and post-menopausal breast cancer. And, breastfeeding longer than the recommended six months can provide additional protection,” says Rachel King, a health education specialist in MD Anderson’s Lyda Hill Cancer Prevention Center.

Most women who breastfeed experience hormonal changes during lactation that delay their menstrual periods. This reduces a woman’s lifetime exposure to hormones like estrogen, which can promote breast cancer cell growth.

In addition, during pregnancy and breastfeeding, you shed breast tissue. “This shedding can help remove cells with potential DNA damage, thus helping to reduce your chances of developing breast cancer,” King says.

Breastfeeding also can help lower your ovarian cancer risk by preventing ovulation. And the less you ovulate, the less exposure to estrogen and abnormal cells that could become cancer.

Below, our experts share what you need to know about breastfeeding and tips for support.

Breastfeed for at least six months

To reap the health perks of breastfeeding, you should do it exclusively for at least six months, according to the American Institute for Cancer Research and World Health Organization. This means your baby receives only breast milk – no water, other liquids or solids. Evidence shows that the health benefits and your cancer risk reduction become significant at six months and beyond. And, breast milk provides all the energy and nutrients your baby needs during this time to develop and stay healthy.

After six months, breast milk provides at least half of your child’s nutritional needs. So, you can gradually introduce foods, such as baby cereal, fruits and vegetables, but you should continue to breastfeed. “Breastfeeding past six months is not only beneficial for your child’s health, but the longer you do it, the more protection you receive against breast and ovarian cancers,” says Sally Scroggs, dietitian and health education manager in MD Anderson’s Lyda Hill Cancer Prevention Center.

In a study by the Collaborative Group on Hormonal Factors in Breast Cancer, researchers found that for every 12 months a woman breastfed, her risk of breast cancer decreased by 4.3%. The study compared mothers who breastfed to those who didn’t. It also found the 12-month time period could be with either one child or as the total for several children.

Furthermore, Australian researchers found that women who breastfed for more than 13 months were 63% less likely to develop ovarian cancer than women who breastfed for less than seven months. And, women who breastfed multiple children for over 31 months could reduce their ovarian cancer risk by up to 91% compared to women who breastfed for under 10 months.

http://www.breastcancer.org/risk/factors/breastfeed_hist

Breastfeeding for two or more years reduces a woman’s risk of developing breast cancer by 50 percent, according to a study conducted by a Yale researcher among women in China.

https://news.yale.edu/2001/01/25/breast-cancer-risk-reduced-50-percent-breastfeeding-two-or-more-years

Cancer Research UK has published the definitive study on breastfeeding and breast cancer. It concludes that the more time women spend breastfeeding in her life, the less her risk of breast cancer.

https://www.canceractive.com/cancer-active-page-link.aspx?n=697

Sorry ... I do believe there are other factors than genetic alone ...

Yes, it does, though the specifics are hard to pinpoint. There are four studies worth noting.

A large-scale analysis of nearly 150,000 women published in The Lancet in 2002 found that for every 12 months of breastfeeding (either with one child or spread over multiple children), the risk of breast cancer decreased by 4.3 percent, when compared to women who didn't breastfeed at all.

Then a 2009 study of more than 60,000 women published in the Archives of Internal Medicine found that women with a family history of breast cancer reduced their risk of getting the disease before menopause by nearly 60 percent if they breastfed.

A study published this year by the Journal of the National Cancer Institute found that women of African ancestry have an especially high risk of developing the aggressive and hard-to-treat forms of breast cancer called estrogen receptor-negative and triple-negative—and the risk actually goes up when a woman gives birth—but breastfeeding negates this risk.

Finally, an international, collaborative study of almost 37,000 breast cancer cases published in the Annals of Oncology in October found a 20 percent reduction in risk of developing hormone-receptor negative breast cancer for women who breastfed. But study authors noted this hard-to-treat sub type of breast cancer is especially prevalent among populations of women who have risk factors that make them least likely to breastfeed, such as being obese, having multiple, early pregnancies, or being of African-American or Sub-Saharan African descent, and that more needs to be done to encourage women to breastfeed.

Why does breastfeeding reduce the risk of breast cancer?

Research has pointed to a few theories, though none have been proven. One is that women who breastfeed have fewer menstrual cycles throughout their lives, and therefore less exposure to estrogen, which has been shown to fuel some types of breast cancers. Another theory: Breastfeeding makes breast cells more resistant to mutations that can cause cancer.

Additionally, there are lifestyle factors that often come into play: Breastfeeding (and pregnant) women tend to give up smoking and drinking, eat healthier foods, and in general take care of themselves better. These behaviors are known to reduce your breast cancer risk.

How long should you breastfeed to reduce your risk?

We don't yet have a conclusive answer to this, but research, like The Lancet study, has pointed to a trend that longer is better. Even if you supplement with formula, it appears that breastfeeding of any kind still reduces your risk. So don't feel like it's all-or-nothing if you're struggling with supply issues.

In the end, I hope that mentioned will answer the question ....regards

I follow the question

Hi

Happy new year

Good question.

I think it reduce the chance of breast cancer, because it is natural and physiological behavior, so it must be posatively affect dam and offspring health especially when we view to immunity.

Sorry now I haven't any article but I hope to get as this reference.

Dear Dr. Tripathi and Dr. Jasim,

Thank you both for supplying link and abstract of some good studies.

Dear Dr. Daham,

Breast milk, particularly the colostrum milk is very very much beneficial for the new born babies. Not only the most ideal food, offspring get protection from various infections through mother's milk.

It has been accepted well by all scientists.

Thanks.

May be.

Yes. Breastfeeding reduces the risks to breast cancers in mothers.

Breastfeeding is natural and beneficial to the child and mother. However, if the mother has habits such as smoking and poor nutrition, etc, there is nothing to protect her from any form of cancer, I would think.

Cancers may be hereditary disease, but sometimes physiological reasons also create it. I have no expertise on this subject. But my common sense directs that breast feeding is natural and good for health of a woman and minimize risks of several diseases including cancer.

Breast Feeding and Breast Cancer

1. Association between breastfeeding and breast cancer risk: evidence from a meta-analysis.Zhou Y, Chen J, Li Q, Huang W, Lan H, Jiang H.Breastfeed Med. 2015 Apr;10(3):175-82. doi: 10.1089/bfm.2014.0141. Epub 2015 Mar 18. Review. Erratum in: Breastfeed Med. 2015 Jun;10(5):288. PMID: 25785349 2. Association between common risk factors and molecular subtypes in breast cancer patients.Turkoz FP, Solak M, Petekkaya I, Keskin O, Kertmen N, Sarici F, Arik Z, Babacan T, Ozisik Y, Altundag K.Breast. 2013 Jun;22(3):344-50. doi: 10.1016/j.breast.2012.08.005. Epub 2012 Sep 14. PMID: 22981738

3. Breastfeeding and the prevention of breast cancer: a retrospective review of clinical histories.González-Jiménez E, García PA, Aguilar MJ, Padilla CA, Álvarez J.J Clin Nurs. 2014 Sep;23(17-18):2397-403. doi: 10.1111/jocn.12368. Epub 2013 Aug 13. PMID: 23937211

Dennis

Dennis Mazur

In new investigation published in JAMA Pediatrics, Amitay and a colleague analyzed 18 studies on the topic of breastfeeding and childhood leukemia, the most common type of childhood cancer. The number of childhood leukemia cases in the papers exceeded 10,000, with more than 17,000 controls. They found that breastfeeding a child for six months or longer was associated with a 19% lower risk for childhood leukemia, compared to children who had been breastfed for less time or not at all. Another of their analyses revealed that children who are ever breastfed, compared to those who were never breastfed, had an 11% lower risk for childhood leukemia.

Its not easy to answer a wide question since breast cancer ( in fact all cancers) are multi-factorial in etiology, however in my experience i have seen more breast cancer ladies who breast fed than those who did not.Most literature correlates sex hormones with breast cancer ,thus assuming etiological factor, which is only true of a fraction of breast cancer. Well single side breast feeding has more risk for developing cancer in the non-used breast .

There are many review articles discussing the research on associations between breastfeeding or not breastfeeding and risk of breast cancer in the mother. These review articles can provide references to the original research studies. I am surprised at the "researchers" in this thread who think their personal opinion should rate higher than good quality research.

For those unable to look for the research themselves here are some starting points that are on open access:

Scoccianti C., Key T.J., Anderson A.S., Armaroli P., Berrino F., Cecchini M., Boutron-Ruault M.-C., (...), Romieu I. European Code against Cancer 4th Edition: Breastfeeding and cancer (2015) Cancer Epidemiology, 39 , pp. S101-S106. http://www.sciencedirect.com/science/article/pii/S1877782114002264?via%3Dihub

Unar-Munguía M, Torres-Mejía G, Colchero MA, González de Cosío T (2017). Breastfeeding mode and risk of breast cancer: A dose-response meta-analysis. J Hum Lact, 33, 422-34

(14) https://www.researchgate.net/publication/313714235_Breastfeeding_Mode_and_Risk_of_Breast_Cancer_A_Dose-Response_Meta-Analysis

Zhou Y, Chen J, Li Q, Huang W, Lan H, Jiang H. Association be-tween breastfeeding and breast cancer risk: evidence from a meta-analysis. Breastfeed Med 2015;10(3):175-182. https://www.researchgate.net/publication/273784442_Association_Between_Breastfeeding_and_Breast_Cancer_Risk_Evidence_from_a_Meta-analysis

C.G. Victora, R. Bahl, A.J. Barros, et al. Breastfeeding in the 21st century: epidemiology, mechanisms, and lifelong effect. Lancet, 387 (10017) (2016), pp. 475-490, 10.1016/S0140-6736(15)01024-7 https://www.sciencedirect.com/science/article/pii/S0140673615010247

Anstey E.H., Shoemaker M.L., Barrera C.M., O'Neil M.E., Verma A.B., Holman D.M. Breastfeeding and Breast Cancer Risk Reduction: Implications for Black Mothers. American Journal of Preventive Medicine, Volume 53, 2017. http://www.ajpmonline.org/article/S0749-3797(17)30317-3/fulltext

https://academic.oup.com/jnci/article/106/10/dju237/927797

http://www.thelancet.com/journals/lancet/article/PIIS0140-6736%2802%2909454-0/fulltext

Article Lactation and Incidence of Premenopausal Breast Cancer

https://academic.oup.com/annonc/article/26/12/2398/228704