Fewer Breast Cancer deaths if more muscle (probably due to less fat, more Vitamin D)
Breast cancer patients fare better if they have muscle: Study ABC News
ABC news chose to focus on increased muscle associated with decreased breast cancer
Actual Study included Adiposity in the title
Association of Muscle and Adiposity Measured by Computed Tomography With Survival in Patients With Nonmetastatic Breast Cancer JAMA Oncology
📄 Download the PDF from VitaminDWiki
Table in PDF: 30% more likely to die of Breast Cancer if excessive fat

FACT: People with high fat content have lower levels of Vitamin D
Obese are 3.4 X more likely to be Vitamin D deficient – meta-analysis Sept 2015
Perhaps women have lower levels of Vitamin D because vitamin D hides in fat
FACT: People with low vitamin D at higher risk of dying of Breast Cancer
Death due to breast cancer reduced 40 percent if high vitamin D – meta-analysis April 2014
Breast Cancer prevented by Vitamin D (most studies concur) – Dec 2017
FACT: Other diseases are associated with obesity - probably due to lower vitamin D
Multiple Sclerosis 40% more likely in obese than in overweight (Mendelian randomization) Jan 2018
Obesity linked to 13 cancers , the linkage is probably vitamin D – Aug 2016
Diabetes 6X more likely for those abdominal obese who have insufficient vitamin D – June 2012