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| | *'''Obesity''': this is a more significant risk factor in postmenopausal women. Before menopause, the effect is unclear. <ref> http://society.guardian.co.uk/cancer/story/0,,686105,00.html </ref> | | *'''Obesity''': this is a more significant risk factor in postmenopausal women. Before menopause, the effect is unclear. <ref> http://society.guardian.co.uk/cancer/story/0,,686105,00.html </ref> |
| | *'''Family history''' if such a history involves having several generations affected by breast cancer or having many relatives diagnosed with breast cancer at less than 50 years old <ref> http://www.breastcancer.org/cmn_who_indrisk.html </ref> | | *'''Family history''' if such a history involves having several generations affected by breast cancer or having many relatives diagnosed with breast cancer at less than 50 years old <ref> http://www.breastcancer.org/cmn_who_indrisk.html </ref> |
| | + | *'''Abortion''' <ref>[[abortion]]</ref> |
| | *'''Prolonged uninterrupted exposure to estrogen''' (e.g. by having an early [[menarche]] and late [[menopause]] or by having no full-term pregnancies).<ref> http://www.breastcancer.org/cmn_who_indrisk.html </ref> | | *'''Prolonged uninterrupted exposure to estrogen''' (e.g. by having an early [[menarche]] and late [[menopause]] or by having no full-term pregnancies).<ref> http://www.breastcancer.org/cmn_who_indrisk.html </ref> |
| | *'''Personal history of breast cancer''' | | *'''Personal history of breast cancer''' |
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| − | This concept of risk should be put into the context of other risks A woman's risk of dying of breast cancer is similar to her risk from radon by living in [[Cornwall]], England. <ref> http://www.cplusc.co.uk/risks.html </ref>
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| − | Some studies have claimed that [[Abortion]] has been found to be a cause of breast cancer, but this has not been corroborated by any major medical groups and foundations.<ref>[http://www.cancer.gov/cancerinfo/ere]</ref><ref>[http://www.fwhc.org/abortion/abcancer.htm Abortion and Breast Cancer]</ref> The National Breast Cancer Coalition does not endorse the view that induced abortions increase the risk of breast cancer.<ref>http://www.natlbcc.org/bin/index.asp?strid=364&depid=9</ref> Nor do the American Cancer Society, the US National Cancer Institute <ref>http://www.cancer.org/docroot/CRI/content/CRI_2_6x_Can_Having_an_Abortion_Cause_or_Contribute_to_Breast_Cancer.asp</ref> and the World Health Organisation<ref>http://www.who.int/mediacentre/factsheets/fs240/en/index.html</ref> endorse this view. This would seem to be borne out by the experience of the Republic of Ireland, where [[abortion]] is illegal, and yet it has one of the highest rates of both breast cancer incidence and mortality in the EU. <ref> http://www.allirelandnci.org/pdf/publications/Stat-Report-1998-2000/4a.pdf </ref>
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| − | A higher risk factor for breast cancer than abortion, recent research reveals, is the eating of red meat. <ref> http://www.telegraph.co.uk/global/main.jhtml?xml=/global/2007/04/04/nmeat04.xml</ref>
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| | ==Ways of reducing the risk== | | ==Ways of reducing the risk== |