Featured Research

from universities, journals, and other organizations

Obesity not linked to breast cancer in Mexican-American women, study finds

Date:
November 8, 2010
Source:
American Association for Cancer Research
Summary:
Obesity was not associated with breast cancer risk in Mexican-American women, even when measured at numerous ages throughout a woman's lifetime, according to new research.

Obesity was not associated with breast cancer risk in Mexican-American women, even when measured at numerous ages throughout a woman's lifetime, according to data presented at the Ninth Annual AACR Frontiers in Cancer Prevention Research Conference, held Nov. 7-10 in Philadelphia.

However, data did show that weight gain during adulthood seemed to reduce breast cancer risk, regardless of menopausal status.

"We found that for every 5 kg of weight gain there was a significant 8 percent decrease in the risk for breast cancer," said Krystal Sexton, Ph.D., a Susan G. Komen Fellow in breast cancer disparities research at The University of Texas Health Science Center at Houston School of Public Health. "However, it is important that we do not send a message that gaining weight prevents breast cancer."

Instead, Sexton and colleagues in the department of epidemiology at The University of Texas MD Anderson Cancer Center, are hypothesizing that the reduced risk for breast cancer among overweight and obese Mexican-American women may be due to a shorter lifetime exposure to estrogen, which is associated with breast cancer.

Previous research has shown that in Mexican-American women there is an association between obesity and earlier age of menopause.

"Women in our study who did not have breast cancer were actually experiencing menopause at an earlier age -- especially women who were overweight and obese -- compared with women who were overweight and obese and did have breast cancer," Sexton said.

This earlier onset of menopause exposed overweight and obese women to two fewer years of estrogen throughout their lifetimes, possibly putting them at a lower risk for breast cancer, according to Sexton.

The researchers identified 155 Mexican-American women with breast cancer and compared them with 333 women of similar ages without breast cancer. Patients reported their weights at ages 15, 30 and at cancer diagnosis. They also reported weight gain between age 15 and diagnosis.

Unlike research in non-Hispanic white women, which has shown an increased risk for breast cancer in obese postmenopausal women, there was no association between body mass index and breast cancer in Mexican-American women, regardless of menopausal status.

"We know that Hispanic women have a lower incidence of breast cancer, but they continue to be diagnosed with breast cancers that have larger tumor sizes, more advanced cancer stages and poorer prognostic factors, leading to lower survival rates compared to non-Hispanic white women," Sexton said. "There is a real need to continue to try to understand why these disparities exist."


Story Source:

The above story is based on materials provided by American Association for Cancer Research. Note: Materials may be edited for content and length.


Cite This Page:

American Association for Cancer Research. "Obesity not linked to breast cancer in Mexican-American women, study finds." ScienceDaily. ScienceDaily, 8 November 2010. <www.sciencedaily.com/releases/2010/11/101108190133.htm>.
American Association for Cancer Research. (2010, November 8). Obesity not linked to breast cancer in Mexican-American women, study finds. ScienceDaily. Retrieved September 23, 2014 from www.sciencedaily.com/releases/2010/11/101108190133.htm
American Association for Cancer Research. "Obesity not linked to breast cancer in Mexican-American women, study finds." ScienceDaily. www.sciencedaily.com/releases/2010/11/101108190133.htm (accessed September 23, 2014).

Share This



More Health & Medicine News

Tuesday, September 23, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Ebola Costs Keep Mounting

Ebola Costs Keep Mounting

Reuters - Business Video Online (Sep. 23, 2014) The WHO has warned up to 20,000 people could be infected with Ebola over the next few weeks. As Sonia Legg reports, the implications for the West African countries suffering from the disease are huge. Video provided by Reuters
Powered by NewsLook.com
Liberia Pleads for Help to Fight Ebola

Liberia Pleads for Help to Fight Ebola

AP (Sep. 22, 2014) Liberia's finance minister is urging the international community to quickly follow through on pledges of cash to battle Ebola. Bodies are piling up in the capital Monrovia as the nation awaits more help. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Ebola Doctor Says Border Controls Critical

Ebola Doctor Says Border Controls Critical

AP (Sep. 22, 2014) A Florida doctor who helped fight the expanding Ebola outbreak in West Africa says the disease can be stopped, but only if nations quickly step up their response and make border control a priority. (Sept. 22) Video provided by AP
Powered by NewsLook.com
Global Ebola Aid Increasing But Critics Say It's Late

Global Ebola Aid Increasing But Critics Say It's Late

Newsy (Sep. 21, 2014) More than 100 tons of medical supplies were sent to West Africa on Saturday, but aid workers say the global response is still sluggish. Video provided by Newsy
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins