Navigation Links
Drinking May Raise Breast Cancer Risk
Date:4/13/2008

Effect was especially strong for estrogen-sensitive tumor types, study found

SUNDAY, April 13 (HealthDay News) -- Alcohol, consumed even in small amounts, increases the risk of breast cancer and particularly estrogen-receptor and progesterone-receptor positive breast cancer, a new study shows.

The findings, expected to be presented Sunday at the annual meeting of the American Association for Cancer Research, in San Diego, are followed by a second study that found an association between breast cancer risk and two genes involved in alcohol metabolism.

Previous data has suggested that consuming alcohol ups the risk of breast cancer, although the precise mechanisms have not been clarified.

In some forms of breast cancer, malignant cells have receptors that render them sensitive to hormones such as estrogen. The first study aimed to see if the hormone receptor status of the tumor influenced the relationship between alcohol consumption and breast cancer risk.

In the study, a team led by Dr. Jasmine Lew of the U.S. National Cancer Institute followed more than 184,000 postmenopausal women for an average of seven years.

Those who had less than one drink a day had a 7 percent increased risk of breast cancer compared to teetotalers, the team reported. Women who drank one to two drinks a day had a 32 percent increased risk, and those who had three or more glasses of alcohol a day had up to a 51 percent increased risk.

But the risk was seen mostly in those 70 percent of tumors classified as estrogen receptor- and progesterone receptor-positive. Researchers suspect that alcohol may have an effect on breast cancer via an effect on estrogen.

The risk was similar whether women consumed primarily beer, wine or spirits, the NCI team noted.

The second study dug deeper into other possible mechanism by which alcohol consumption increases breast cancer risk.

"For years, we've known that there's an association between alcohol drinking and breast cancer risk, but nobody knows yet what the underlying biological mechanisms are," said Dr. Catalin Marian, lead author of the study and a research instructor in oncology at the Lombardi Comprehensive Cancer Center at Georgetown University in Washington, D.C. "The logical step was to begin analyzing the alcohol metabolizing genes."

And indeed, two of these genes -- ADH1B and ADH1C -- were associated with a two-fold increase in breast cancer risk.

But the study does not prove a definite cause-and-effect link. "This is an association," Marian said. "This type of study is good for generating hypotheses. It's not a definite conclusion. It needs to be replicated by other studies to say for sure that what we found is there."

Another researcher urged caution in interpreting the results of both studies.

"These studies are too early for use in a clinical setting or to advance a public health message," said Dr. Peter Shields, co-author of the genetics study and deputy director of the Lombardi Comprehensive Cancer Center.

However, he added that the findings "really do advance science, and, with proper replication in other studies, then they may be highly clinically significant."

More information

There's more on breast cancer at the U.S. National Cancer Institute.



SOURCES: Catalin Marian, M.D., Ph.D., research instructor, oncology department, cancer genetics and epidemiology division, and Peter Shields, M.D., deputy director, Lombardi Comprehensive Cancer Center, Georgetown University, Washington, D.C.; presentations, April 13, 2008, annual meeting, American Association for Cancer Research, San Diego


'/>"/>
Copyright©2008 ScoutNews,LLC.
All rights reserved  

Related medicine news :

1. Fast Lube Centers Play Key Role in Keeping Drinking Water Safe
2. Its Spring Break: How Much Does Heavy Drinking Affect Your Body?
3. Water Advocates Calls for More Drinking Water and Sanitation Projects
4. Waters Offers U.S. Water Authorities Complimentary Drinking Water Testing for the Presence of Pharmaceuticals
5. Free online scientific journal on drinking water
6. Drinking Water Association Discusses Pharmaceuticals in Water
7. Statement from American Water Works Association on Associated Press Story on Pharmaceuticals in Drinking Water
8. New study sheds light on excessive drinking among the elderly
9. Is your drinking water safe?
10. NHS Choices Launches Tool to Assess Drinking Behaviour
11. Vestergaard Frandsen to Launch High Tech Filter to Provide Clean and Safe Drinking Water to People in Developing Nations
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
Drinking May Raise Breast Cancer Risk
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... ... for human induced pluripotent stem (iPS) cells and other difficult to transfect cells, ... Cloning Medium. The PluriQ™ G9™ Gene Editing System is a complete ...
(Date:6/24/2016)... ... June 24, 2016 , ... To ... infrastructure. Most providers, however, are unsure how to move forward, given the need ... define a path forward tailored to an organization’s specific needs. , PYA Principal ...
(Date:6/24/2016)... (PRWEB) , ... June 24, 2016 , ... SpiritQuest Sedona ... heart of West Sedona, surrounded by famous vortex sites: Cathedral Rock, Airport Mesa, and ... partner properties – the Lodge at Sedona as well as the Sedona Rouge, both ...
(Date:6/23/2016)... (PRWEB) , ... June 23, 2016 , ... An ... may expose a possible link between head and neck cancer in individuals with unhealthy ... the study were evaluated based on whether they had gum disease, brushed their teeth ...
(Date:6/23/2016)... ... 23, 2016 , ... SyncDog, Inc. , the leading ... is featured in the current issue of Silicon Review magazine. Silicon ... technology solutions and features them in their magazine. The magazine allows top-level executives ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... FRANKLIN, Tenn. , June 23, 2016 ... for automating, integrating and transforming the patient ... launch of several innovative new products and ... depth of its revenue cycle offerings. These ... establish more efficient workflows, remain compliant in ...
(Date:6/23/2016)... , June 23, 2016 Leading ... that address medical conditions resulting from a breakdown ... has appointed Greg Doyle as chief ... Leading BioSciences, executive management team and board of ... chief financial officer. He will provide continued leadership ...
(Date:6/23/2016)... -- On Wednesday, June 22, 2016, the NASDAQ ... Dow Jones Industrial Average edged 0.27% lower to finish at ... Stock-Callers.com has initiated coverage on the following equities: Alkermes PLC ... AMAG ), IDEXX Laboratories Inc. (NASDAQ: IDXX ... Learn more about these stocks by accessing their free trade ...
Breaking Medicine Technology: