Navigation Links
Supplements Might Reduce Breast Cancer Risk
Date:4/18/2010

Study found multivitamins, calcium tablets had protective effect

SUNDAY, April 18 (HealthDay News) -- Women who take multivitamin tablets along with calcium supplements seem to have a reduced risk of developing breast cancer, new research suggests.

The authors of the study, which is to be presented Sunday at the American Association for Cancer Research annual conference in Washington, D.C., did not separate out which specific vitamins might be beneficial but suggested that the interactions of different vitamins together might account for the beneficial effect.

"The effect was seen with multivitamins, not with single vitamins," said study co-author Dr. Jaime Matta, a professor of pharmacology, physiology and toxicology at Ponce School of Medicine in Ponce, Puerto Rico. "It's possible that the vitamins work better together than individually."

"We found that taking multivitamins and calcium supplements were strongly protective against breast cancer," said Dr. Manuel Bayona, a professor in the public health program at the Ponce School of Medicine. "Which vitamins exactly? We don't know because they were multivitamins."

The findings, however, do seem to contradict previous reports that the supplement forms of various single vitamins including E and C don't prevent breast cancer in women. Other studies have suggested a protective effect for individual vitamins.

The new study won't do much to settle that confusion, one expert said. "The results are interesting but it's a small study," said Joanne Dorgan, an epidemiologist with Fox Chase Cancer Center in Philadelphia. "At this point in time, most of the big studies don't support an association."

For this study, the authors compared vitamin and calcium intakes of 268 women with breast cancer and 457 women without breast cancer, all in Puerto Rico.

They also measured the ability of the women's DNA to repair itself, a function that is critical to keeping cancer at bay.

"We've known that DNA repair capacity is linked to several other types of cancer," said Matta. "DNA repair capacity is very, very linked to breast cancer risk."

Here, women who were older, had low DNA repair capacity levels, a family history of breast cancer and who had not breast-fed all had a higher risk of breast cancer.

Taking a multivitamin tablet reduced the risk of tumors by about 30 percent, while calcium supplements reduced the risk by 40 percent, the study authors noted.

But when the DNA repair capacity was taken out of the equation, calcium was no longer protective, strongly suggesting that calcium's protective effect came only from its influence on DNA repair.

Vitamins, on the other hand, seemed to have a beneficial effect even beyond contributions to DNA repair, the researchers said.

One drawback of the study is that the authors did not measure women's actual vitamin levels, instead relying on responses to questionnaires. Participants most likely bought widely available brands at chain drug stores. "People here usually don't have access to very sophisticated health food stores or specialty vitamin stores," noted Matta.

The study authors are now looking at ways to use DNA repair capacity function as a marker for breast cancer risk, much like cholesterol is used as a marker for heart disease.

"We're developing new technology that would make measuring DNA repair capacity more inexpensive, faster and easier to do," Matta said.

Still, another expert said the new study was less than convincing.

"The totality of the evidence to date does not support taking vitamins and calcium for breast cancer prevention," said Marji McCullough, strategic director of nutritional epidemiology for the American Cancer Society. "There are other reasons women may wish to take calcium, for example for bone health."

More information

Figure out your breast cancer risk with the help of the U.S. National Cancer Institute.



SOURCES: Jaime Matta, Ph.D., professor, pharmacology, physiology and toxicology, Ponce School of Medicine, Ponce, Puerto Rico; Manuel Bayona, M.D., Ph.D., professor, Public Health Program, Ponce School of Medicine, Ponce, Puerto Rico; Joanne Dorgan, Ph.D., epidemiologist, Fox Chase Cancer Center, Philadelphia; Marji McCullough, Sc.D., R.D., strategic director, nutritional epidemiology, American Cancer Society; April 18, 2010, presentation, American Association for Cancer Research annual meeting, Washington, D.C.


'/>"/>
Copyright©2010 ScoutNews,LLC.
All rights reserved

Related medicine news :

1. Arsa Offers High Quality Supplements, Cosmetics and Magic Scents from Mexico for Less Than $10
2. ProbioticSmart.com Re-Launches Newly Expanded Online Store for Human, Pet, and Livestock Health Products and Supplements
3. IN Pet Supplements Face Challenges in New China Market as Imitation Products Continue to Baffle Consumers
4. DiscountSupplements.com Launches Website With the Cheapest Supplements Prices and Fastest Shipping
5. ConsumerLab.com Finds Carcinogenic form of Chromium in Supplements, Including Those for Weight Loss
6. Buy HGH Website Educates Consumers on the Pros and Cons of Human Growth Hormone Supplements
7. Reliv Foundation Donates $450,000 In Nutritional Supplements to Haitian Relief Efforts
8. Autism-Supplements.com and Generation Rescue Work Together to Raise Money for Biomedical Autism Treatments
9. Omega-3 Supplements Dont Reduce Risk of Preterm Birth
10. Vitamin D supplements could fight Crohns disease
11. All Alternative Medicine Products LLC. Presents a New Line of Natural Nutritional Supplements and Vitamins
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:1/23/2017)... , ... January 23, 2017 , ... ... production applications. However, choosing the right method is paramount to success. Selecting an ... often in situations where multiple persons use the same equipment. Rare or expensive ...
(Date:1/23/2017)... ... January 23, 2017 , ... Gynecology Associates of Gwinnett ... gynecological services for women of all ages. The staff of Gynecology Associates ... reproductive services from routine health screenings to diagnosing and treating female concerns including ...
(Date:1/23/2017)... ... January 23, 2017 , ... “Some Infallible Characteristics of Christ”: a ... Characteristics of Christ” is the creation of published author, Rev. Dr. Robert W. Thomas, ... thirteen years, a preacher for over nineteen, a pastor for over fifteen years. He ...
(Date:1/22/2017)... ... January 22, 2017 , ... Medical lab testing ... the results of a simple test will take days to arrive to the end ... offers customers direct access to their lab tests, bypassing the cost and delay of ...
(Date:1/21/2017)... ... January 21, 2017 , ... Phytocéane invites you ... from the rest of the world with ZANZIBAR SHOWER GEL. Inspired by the beauty ... ingredients, Virgin Coconut Oil and moisturizing vegetal coral to create this gentle, crystal-clear shower ...
Breaking Medicine News(10 mins):
(Date:1/23/2017)... The global  anxiety disorders and depression treatment market  is expected to reach ... worldwide is anticipated to drive the market growth in the coming years. Increasing ... in the recent years. Continue Reading ... ... ...
(Date:1/23/2017)... , Jan 23, 2017 NeuroVive Pharmaceutical ... has signed a preclinical collaboration agreement with the Children,s Hospital ... J. Falk , M.D., a US key opinion leader in ... ... will evaluate compounds from NeuroVive,s research program, NVP015, in certain ...
(Date:1/21/2017)... , Jan 20, 2017 Research ... Clinical Laboratory Testing Market By Type of Test (Tumor, Clinical ... & By Type of Diseases (Tuberculosis, Influenza, Cancer, HIV/AIDS etc.), ... ... attractive destination for healthcare services, market segments, especially clinical lab ...
Breaking Medicine Technology: