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Breast Cancer Prevention with Vitamin D 

Do you qualify?
Join the Breast Cancer Prevention Study now!


Raising vitamin D levels to the recommended range of 40-60 ng/ml reduces incidence of breast cancer by 50-80%. On this page you will find resources to dive deeper into this subject. We invite you to use these resources to educate yourself, and help others through becoming a D*champion or D*advocate

If you are a women 60 years or older, and cancer free, we encourage you to participate in our Breast Cancer Prevention study.


New to the idea of vitamin D for breast cancer prevention?  
Start Here.

7 minute video 

with Dr. Cedric Garland and Carole Baggerly on Breast Cancer Prevention with Vitamin D 
Mammography or Prevention? Letter to the NY Times, Cedric F. Garland, Dr. PH, FACE, December 2009
Vitamin D Increases Breast Cancer Survival Press Release, March 2014
Creighton Study Shows Vitamin D Reduces Cancer Risk
Disease Incidence Prevention Chart A chart showing the required vitamin D serum levels for prevention of many diseases.
Call to Action 48 scientists agree
Average Serum Level by Vitamin D Supplement Amount This chart shows wide range of supplementation to achieve 40-60 ng/ml and underscores why testing is so important. Some people only need 1,000 IU/day, others need 10,000 IU/day. The only way you know what is right for you is to test

50-80% reduction in breast cancer risk? Show me the research! Click here to read about a myriad of studies. 


Watch this video

for more information on
the GrassrootsHealth
Breast Cancer Prevention Paradigm


Breast Cancer Prevention Resources 


Download and print these to share with those you know. 

Cancer trifold

Breast Cancer Poster Presentation

GrassrootsHealth Publications

Serum 25-Hydroxyvitamin D Concentrations ≥40 ng/ml are Associated with >65% Lower Cancer Risk: Pooled Analysis of Randomized Trial and Prospective Cohort Study, Sharon L. McDonnell , Carole Baggerly, Christine B. French, Leo L. Baggerly, Cedric F. Garland, Edward D. Gorham, Joan M. Lappe, Robert P. Heaney. 

Vitamin D Supplement Doses and Serum 25-Hydroxyvitamin D in the Range Associated with Cancer Prevention, Cedric F. Garland, Christine B. French, Leo L. Baggerly, and Robert P. Heaney.

GrassrootsHealth Panelist Publications

Vitamin D for Cancer Prevention: A Global Perspective, Arash Hossein-nezhad, and Michael F. Holick. 

Genomic Vitamin D Signaling in Breast Cancer: Insights From Animal Models and Human Cells, Donald Matthews, Erika LaPorta, Glendon M. Zinser, Carmen J Narvaez, and JoEllen Welsh. 

Meta-analysis of Vitamin D Sufficiency for Improving Survival of Patients with Breast Cancer, Sharif B. Mohr, Edward D. Gorham, June Kim, Heather Hofflich and Cedric F. Garland.

The impact of vitamin D in breast cancer: genomics, pathways, metabolism, Carmen J. Narvaez, Donald Matthews, Erika LaPorta, Katrina M. Simmons, Sarah Beaudin and JoEllen Welsh. 

Cellular and Molecular effects of Vitamin D on Carcinogenesis, JoEllen Welsh.


Breast Cancer Prevention - Grassroots Health
5:01; Interview with Carole Baggerly & Dr. Cedric Garland

D*facts Breast Cancer
7:45; Interview with Carole Baggerly & Dr. Cedric Garland

Dr. Feldman: Vitamin D and Breast Cancer
20:57; Interview with Carole Baggerly & Dr. David Feldman

Dr. Mercola Interviews Carole Baggerly (Carole’s Breast Cancer Story) 
1:08:26; Interview with Carole Baggerly & Dr. Joseph Mercola

Preventing Cancer: A Global Look (2014 Seminar) 
45:16; Seminar Presentation by Dr. Cedric Garland

Vitamin D and Breast Cancer
11:40; Interview with Dr. JoEllen Welsh

Vitamin D Cancer Prevention Levels
7:09; Interview with Carole Baggerly & Dr. Cedric Garland

Vitamin D Role in Preventing Cancer (2010 Seminar) 
54:37; Seminar Presentation by Dr. Cedric Garland

Vitamin D Stops Breast Cancer 
1:00:22; Webinar with Dr. JoEllen Welsh


Press Releases

04/16/2016  GrassrootsHealth Analysis Associates Vitamin D with 67% Lower Cancer Risk 

03/06/2014  Vitamin D Increases Breast Cancer Patient Survival

01/22/2013  Low Vitamin D Levels Linked to High Risk of Premenopausal Breast Cancer 

10/03/2012  Breast Cancer Prevention with Vitamin D: GrassrootsHealth’ Paradigm 

03/10/2012  The Prevention Paradigm 

10/31/2011  Canadian Women Invited To Join Global 
Vitamin D Study To Help Prevent Breast Cancer 

10/05/2011  Breast Cancer Prevention Month Initiated by GrassrootsHealth 

08/05/2011  Breast Cancer Prevention Study with Vitamin D Launched by GrassrootsHealth 

02/21/2011  Higher Vitamin D Intake Needed to Reduce Cancer Risk 

11/04/2009  Eradicate Breast Cancer With Vitamin D? 

10/05/2009  D*action Community Project Calls for Changing Breast Cancer Awareness Month to Breast Cancer Prevention Month 

Power Point Presentations

London Vitamin D & Breast Cancer Symposium