Green Med Information
- “The study, published in The Lancet Oncology, found 12% of 2,733 women aged 18 to 40 treated for breast cancer at 127 hospitals across the UK between 2000 and 2008 had a BRCA mutation.
- “The women's medical records were tracked for up to 10 years.”
- “During this time, 651 of the women died from breast cancer, and those with the BRCA mutation were equally likely to have survived at the two-, five- and 10-year mark as those without the genetic mutation.”
- “This was not affected by the women's body mass index or ethnicity.”
- “About a third of those with the BRCA mutation had a double mastectomy to remove both breasts after being diagnosed with cancer. This surgery did not appear to improve their chances of survival at the 10-year mark.”
- Lancet study
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Very little difference in mortality
Studies on average show little mortality difference
VitaminDWiki
Summary: BRCA does increase the chance of getting breast cancer, but does NOT increase the chance of dying from Breast cancer for young women (<40 years)
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- Overview Breast Cancer and Vitamin D
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- Breast Cancer severity strongly associated with low vitamin D – May 2017
- Breast Cancer outcomes much better if higher vitamin D levels – Nov 2016