Featured Research

from universities, journals, and other organizations

Obesity and large waist size linked to higher risk of death in African-American women

Date:
September 7, 2011
Source:
Boston University Medical Center
Summary:
The risk of death increases with higher levels of overweight and obesity among African American women, according to a new study.

The risk of death increases with higher levels of overweight and obesity among African American women, according to a new study led by researchers from the Slone Epidemiology Center at Boston University. In addition, a larger waist size was associated with a higher risk of death among women who were not obese. The relationship between body size and risk of death was strongest for deaths from cardiovascular disease.

The study, which will be published in the Sept. 8 issue of the New England Journal of Medicine, was led by Deborah Boggs, ScD, a postdoctoral associate at Slone.

Researchers evaluated the relationship of body mass index (BMI) and waist size with risk of death over a 13 year period of follow-up in the Black Women's Health Study, an ongoing study of 59,000 African American women from across the US. The investigators focused on 33,916 women who had never smoked and were free of cardiovascular disease and cancer at the beginning of the study.

The risk of death was 18 percent higher for each 5-unit increase in BMI, and BMI was most strongly linked to deaths from cardiovascular disease. The risk of death from cardiovascular disease was two times higher for overweight women (BMI of 25 to 29) and three times higher for obese women (BMI of 30 or higher) compared with women with a healthy weight (BMI under 25). The researchers also found that a larger waist size was associated with a higher risk of death among women who were not considered obese; a waist size over 35 inches was associated with a 55 percent higher risk of death.

Whereas BMI gives a good estimate of total body fat, waist size provides a measure of the distribution of body fat, specifically abdominal fat. Prior research suggests that abdominal fat is more metabolically active, plays a role in the development of insulin resistance and may be particularly detrimental to long-term health. In those who are not obese, waist size may be a better indicator of risk for many health outcomes.

Previous findings have established that risk of death increases with higher BMI levels in white populations, but the limited data available on African Americans indicated that risk of death was increased only at very high levels of BMI.

"The present findings indicate that the risk of death in black women increases with increasing BMI of 25 or higher, similar to the pattern in white populations," said Boggs, the study's lead author. "Our findings highlight the importance for women to maintain a healthy weight and keep extra inches off the waist in order to decrease their risk of death."

Funding for this study was provided by the National Cancer Institute.


Story Source:

The above story is based on materials provided by Boston University Medical Center. Note: Materials may be edited for content and length.


Cite This Page:

Boston University Medical Center. "Obesity and large waist size linked to higher risk of death in African-American women." ScienceDaily. ScienceDaily, 7 September 2011. <www.sciencedaily.com/releases/2011/09/110907171521.htm>.
Boston University Medical Center. (2011, September 7). Obesity and large waist size linked to higher risk of death in African-American women. ScienceDaily. Retrieved September 19, 2014 from www.sciencedaily.com/releases/2011/09/110907171521.htm
Boston University Medical Center. "Obesity and large waist size linked to higher risk of death in African-American women." ScienceDaily. www.sciencedaily.com/releases/2011/09/110907171521.htm (accessed September 19, 2014).

Share This



More Health & Medicine News

Friday, September 19, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Cost of Ebola

The Cost of Ebola

Reuters - Business Video Online (Sep. 18, 2014) As Sierra Leone prepares for a three-day "lockdown" in its latest bid to stem the spread of Ebola, Ciara Lee looks at the financial implications of fighting the largest ever outbreak of the disease. Video provided by Reuters
Powered by NewsLook.com
What HealthKit Bug Means For Your iOS Fitness Apps

What HealthKit Bug Means For Your iOS Fitness Apps

Newsy (Sep. 18, 2014) Apple has delayed the launch of the HealthKit app platform, citing a bug. Video provided by Newsy
Powered by NewsLook.com
U.S. Food Makers Surpass Calorie-Cutting Pledge

U.S. Food Makers Surpass Calorie-Cutting Pledge

Newsy (Sep. 18, 2014) Sixteen large food and beverage companies in the United States that committed to cut calories in their products far surpassed their target. Video provided by Newsy
Powered by NewsLook.com
Residents Vaccinated as Haiti Fights Cholera Epidemic

Residents Vaccinated as Haiti Fights Cholera Epidemic

AFP (Sep. 18, 2014) Haitians receive the second dose of the vaccine against cholera as part of the UN's vaccination campaign. Duration: 00:34 Video provided by AFP
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:
from the past week

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