Navigation Links
Many breast cancer patients take high doses of antioxidants despite possible consequences
Date:6/7/2009

A new study finds that many women with breast cancer take antioxidant supplements while undergoing cancer treatment, even though the consequences of doing so are unknown. Published in the July 15, 2009 issue of CANCER, a peer-reviewed journal of the American Cancer Society, the study indicates that additional research should be undertaken to determine the effects of antioxidant supplementation on the health and survival of breast cancer patients.

Antioxidant supplements include vitamin C, vitamin E, beta-carotene, and selenium. They are found in individual supplements as well as in many multivitamins. Many breast cancer patients believe that antioxidant supplements will protect them from the side effects of breast cancer treatment, help prevent breast cancer recurrence, and improve their overall health. However, the actual effects of taking antioxidants during cancer treatment are poorly understood and the findings to date are mixed. Some physicians believe antioxidants may in fact interfere with radiation and some types of chemotherapy, which often attacks tumor cells by generating reactive oxygen species (ROS), very small molecules that play a role in cell development.

Researchers led by Heather Greenlee, ND, PhD, Assistant Professor of Epidemiology and Medical Oncology (in Medicine) at Columbia University Mailman School of Public Health in New York, investigated the prevalence of antioxidant use in women with breast cancer who participated in the population-based Long Island Breast Cancer Study Project (LIBCSP). LIBCSP, which included more than 1,500 breast cancer patients, began as a federally mandated study that investigated whether breast cancer risk was associated with environmental exposures among women in Nassau and Suffolk counties in New York State. Dr. Greenlee's study is based on the 764 patients who completed a follow-up interview and provided information on antioxidant supplement use.

Among the 764 patients studied, 663 women (86.8 percent) reported receiving chemotherapy, radiation, or hormone therapy for breast cancer. Of these 663 women, six in ten (60.5 percent) reported using antioxidants during breast cancer treatment, which included chemotherapy, radiation, and tamoxifen (anti-estrogen) therapy.

About seven in ten antioxidant users (69.3 percent) used high doses, defined as higher than the dose contained in a Centrum multivitamin. Women who took high doses of antioxidants during treatment were more likely to be using tamoxifen and to have a history of eating more fruits and vegetables, using herbal products, and engaging in mind-body practices.

"Given the common use of antioxidant supplements during breast cancer treatment, often at high doses and in conjunction with other complementary therapies, future research should address the effects of antioxidant supplementation on breast cancer outcomes," including whether antioxidants affect treatment toxicities, treatment efficacy, cancer recurrence, and survival, say the authors.


'/>"/>

Contact: David Sampson
david.sampson@cancer.org
American Cancer Society
Source:Eurekalert

Related medicine news :

1. Survival differences by race most apparent in advanced stages of breast cancer
2. MRI finds breast cancer before it becomes dangerous
3. Pathway links inflammation, angiogenesis and breast cancer
4. Drop in breast cancer incidence linked to hormone use, not mammograms
5. Breast cancer prevention practices vary across Canada
6. Eating junk food whilst pregnant and breastfeeding may lead to obese offspring
7. Acrylamide Wont Raise Breast Cancer Risk
8. New link between estrogen and breast cancer
9. Hypnosis Eases Pain of Breast Cancer Surgery
10. Discovery suggests location of genes for breast density, a strong risk factor for breast cancer
11. Longaberger Expands Horizon of Hope Campaign to Build Support for American Cancer Societys Breast Cancer Initiatives
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:6/25/2016)... ... June 25, 2016 , ... The temporary closing of Bruton Memorial Library on June 21 due ... up a new, often overlooked aspect of head lice: the parasite’s ability to live away ... a common occurrence, but a necessary one in the event that lice have simply gotten ...
(Date:6/25/2016)... ... June 25, 2016 , ... On Friday, June 10, Van Mitchell, Secretary ... Work award to iHire in recognition of their exemplary accomplishments in worksite health promotion. ... Maryland Workplace Health & Wellness Symposium at the BWI Marriott in Linthicum Heights. iHire ...
(Date:6/24/2016)... ... June 24, 2016 , ... Marcy was in a crisis. Her son James, eight, was out ... family verbally and physically. , “When something upset him, he couldn’t control his emotions,” remembers ... would throw rocks at my other children and say he was going to kill them. ...
(Date:6/24/2016)... ... ... BioMedics, Inc, makers of Topricin and MyPainAway Pain Relief Products, join The ‘Business for a ... an hour by 2020 and then adjusting it yearly to increase at the same rate ... assure the wage floor does not erode again, and make future increases more predictable. , ...
(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:6/23/2016)... , June 23, 2016 ... CAPR ), a biotechnology company focused on ... today announced that patient enrollment in its ongoing ... Duchenne) has exceeded 50% of its 24-patient target. ... in the third quarter of 2016, and to ...
(Date:6/23/2016)... the establishment of Astellas Farma Colombia (AFC), a new affiliate with operations headquartered in Bogota. Colombia ... ... Sandra ... ... Astellas is a pharmaceutical company ...
(Date:6/23/2016)... June 23, 2016  Experian Health, the ... transforming the patient payment and care experience, ... new products and services that will enhance ... cycle offerings. These award-winning solutions will enable ... remain compliant in an ever-changing environment and ...
Breaking Medicine Technology: