Navigation Links
Calcium supplements may not prevent bone loss in women with breast cancer
Date:8/27/2013

WINSTON-SALEM, N.C. August 27, 2013 Women undergoing treatment for breast cancer are widely prescribed calcium and vitamin D supplements to prevent and manage osteoporosis, an unwanted side effect of breast cancer therapies. However, new research from Wake Forest Baptist Medical Center finds that the recommended daily doses of these supplements may not prevent loss of bone mineral density (BMD) in these women.

Study author Gary G. Schwartz, Ph.D., a cancer epidemiologist at Wake Forest Baptist, said the purpose of the study was to examine whether a seemingly common sense prescribing practice actually works. "We evaluated clinical trial evidence for calcium and vitamin D supplementation in maintaining skeletal health of women with breast cancer," he said. "At the doses recommended, the data show that these supplements are inadequate to prevent loss of BMD."

Schwartz and co-author Mridul Datta, Ph.D., a postdoctoral fellow at Wake Forest Baptist, reviewed data from clinical trials that evaluated the effect of antiresorptive drugs on BMD and used the "before-after" data from the comparison group to assess change in BMD in pre- and in post-menopausal women. Overall, the results from 16 trials indicate that 500-1500 mg calcium and 200-1000 IU vitamin D, the doses commonly recommended, do not prevent loss of BMD in women with breast cancer. Despite supplementation, women lost BMD in virtually every clinical trial reviewed.

The study appears online ahead of print this month in the journal Critical Reviews in Oncology/Hematology.

Women with breast cancer lose BMD at a higher rate than their healthier counterparts, increasing their risk of fractures which are associated with significant declines in function and health-related quality of life, and in higher mortality rates.

Consequently, it is a common practice to prescribe calcium and vitamin D supplements to these women, a "low intensity" intervention that seems to make sense, Datta said, although it's never really been tested. In the clinical trials reviewed, BMD in the women was measured at the beginning and end of the studies, Datta said, so if the supplementation worked to prevent BMD loss, "you should be able to see that in the data, and we clearly didn't."

Datta said it is possible that the BMD deficits could be worse in the absence of the supplements, but the results are concerning overall because cardiovascular disease is the main cause of mortality in women with breast cancer. There is growing evidence that calcium supplements may increase the risk of heart attack and stroke.

"The take-home message is that this very common practice of supplementation doesn't really seem to be working," Schwartz said. "Future trials are needed to evaluate the safety and efficacy of calcium and vitamin D supplementation in women undergoing breast cancer therapy."


'/>"/>

Contact: Bonnie Davis
bdavis@wakehealth.edu
336-716-4977
Wake Forest Baptist Medical Center
Source:Eurekalert

Related medicine news :

1. Older Women Should Not Take Calcium, Vitamin D: Task Force
2. Coral Calcium Company Announces New Offer Amidst Supreme Court Healthcare Decisions
3. Study questions value of calcium and vitamin D supplements
4. Calcium, Vitamin D Supplements May Pose Risks for Men With Prostate Cancer
5. Hebrew SeniorLife study finds no link between calcium intake and coronary artery calcification
6. Study shows heart calcium scan predictive of diabetes-related death from cardiovascular disease
7. Penn team developing new class of malaria drugs using essential calcium enzyme
8. Study shows high blood calcium levels may indicate ovarian cancer
9. Calcium Supplements May Raise Mens Death Risk From Heart Disease
10. U of M researchers develop a molecular calcium sponge to tackle heart failure
11. Calcium Supplements May Raise Odds of Heart Death in Women
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... Dr. Calvin Johnson has dedicated ... has implemented orthobiologic procedures as a method for treating his patients. The procedure ... doctors to perform the treatment. Orthobiologics are substances that orthopaedic surgeons use to ...
(Date:6/24/2016)... ... ... Those who have experienced traumatic events may suffer from a complex set ... drug or alcohol abuse, as a coping mechanism. To avoid this pain and suffering, ... traumatic event. , Trauma sufferers tend to feel a range of emotions, from depression, ...
(Date:6/24/2016)... ... June 24, 2016 , ... Global law firm Greenberg ... Legal Elite. The attorneys chosen by their peers for this recognition are considered among ... Greenberg Traurig Shareholders received special honors as members of this year’s Legal Elite Hall ...
(Date:6/24/2016)... ... 24, 2016 , ... People across the U.S. are sharpening their pencils and ... essay contest in which patients and their families pay tribute to a genetic counselor ... National Society of Genetic Counselors (NSGC) Annual Education Conference (AEC) this September. , ...
(Date:6/24/2016)... ... June 24, 2016 , ... ... feeding the Frederick area economy by obtaining investment capital for emerging technology companies. ... 2½ years that have already resulted in more than a million dollars of ...
Breaking Medicine News(10 mins):
(Date:6/26/2016)... June 26, 2016 Story ... operating models within the health care industry is causing ... efficiency , Deloitte offers a suite of solutions ... issues impacting efficient cost optimization: labor resource analysis, revenue ... services facilitate better outcomes and better economics ...
(Date:6/24/2016)... 2016 Dublin ... addition of the " Global Markets for Spectroscopy ... This report focuses on the ... review, including its applications in various applications. The report ... includes three main industries: pharmaceutical and biotechnology, food and ...
(Date:6/24/2016)... Research and Markets has announced the addition of ... report to their offering. ... The World Market for Companion Diagnostics covers the world market ... the report includes the following: , World ... Region (N. America, EU, ROW), 2015-2020 , World IVD ...
Breaking Medicine Technology: