Featured Research

from universities, journals, and other organizations

Enlarged Heart Linked To Obesity, Study Shows

Date:
June 21, 2007
Source:
University of Arizona Health Sciences Center
Summary:
Excessive body weight is associated with left ventricular hypertrophy, a thickening of the heart muscle in the left ventricle, the heart's pumping chamber. The largest study of its kind helps explain why excessive body weight increases the risk for heart disease.

Sarver Heart Center cardiologist M. Reza Movahed, MD, and UMC echocardiology technician Sandra Shelton evaluate a heart ultrasound image.
Credit: D. Stolte, the University of Arizona

New research from The University of Arizona Sarver Heart Center helps explain why excessive body weight increases the risk for heart disease.

In the largest study of its kind, cardiologist M. Reza Movahed, MD, PhD, and research specialist Adolfo A. Martinez, MD, discovered that excessive body weight is associated with a thickening of the heart muscle in the left ventricle, the heart's pumping chamber. Known to physicians as left ventricular hypertrophy (LVH), the condition potentially can lead to heart failure and rhythm problems.

"We observed that the thickening in the muscle wall becomes especially noticeable in obese patients who have a Body Mass Index (BMI) of 30 or greater," says Dr. Movahed. "Previous studies have shown that left ventricular hypertrophy is associated with a higher risk of mortality."

Analyzing 17,261 heart ultrasounds, the UA researchers studied moving images of the heart to evaluate structure and function. Results showed that narrowing of the aortic valve, the main valve that carries blood away from the heart to the rest of the body, was the strongest predictor of LVH, followed by gender and Body Mass Index.

While the cause of LVH in obese patients is not known, it may be related to increased work load or to the presence of other cardiac risk factors in these patients.

The findings may guide physicians who study obesity and cardiac function. Drs. Movahed and Martinez presented the results of their study at the 18th Annual Scientific Sessions of the American Society of Echocardiography (ASE) in Seattle, Wash. The meeting concludes June 20.

"These results are another stake in the ground that supports healthy lifestyles for the benefit of heart protection," says Dr. Movahed. "Maintaining a proportionate BMI may prevent LVH and lead to better heart function."

Reference: Left ventricular hypertrophy is independently associated with body mass index and gender. Mohammad-Reza Movahed and Adolfo A. Martinez, The University of Arizona Sarver Heart Center, Tucson, Ariz.


Story Source:

The above story is based on materials provided by University of Arizona Health Sciences Center. Note: Materials may be edited for content and length.


Cite This Page:

University of Arizona Health Sciences Center. "Enlarged Heart Linked To Obesity, Study Shows." ScienceDaily. ScienceDaily, 21 June 2007. <www.sciencedaily.com/releases/2007/06/070619155740.htm>.
University of Arizona Health Sciences Center. (2007, June 21). Enlarged Heart Linked To Obesity, Study Shows. ScienceDaily. Retrieved July 29, 2014 from www.sciencedaily.com/releases/2007/06/070619155740.htm
University of Arizona Health Sciences Center. "Enlarged Heart Linked To Obesity, Study Shows." ScienceDaily. www.sciencedaily.com/releases/2007/06/070619155740.htm (accessed July 29, 2014).

Share This




More Health & Medicine News

Tuesday, July 29, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Deadly Ebola Virus Threatens West Africa

Deadly Ebola Virus Threatens West Africa

AP (July 28, 2014) West African nations and international health organizations are working to contain the largest Ebola outbreak in history. It's one of the deadliest diseases known to man, but the CDC says it's unlikely to spread in the U.S. (July 28) Video provided by AP
Powered by NewsLook.com
$15B Deal on Vets' Health Care Reached

$15B Deal on Vets' Health Care Reached

AP (July 28, 2014) A bipartisan deal to improve veterans health care would authorize at least $15 billion in emergency spending to fix a veterans program scandalized by long patient wait times and falsified records. (July 28) Video provided by AP
Powered by NewsLook.com
Two Americans Contract Ebola in Liberia

Two Americans Contract Ebola in Liberia

Reuters - US Online Video (July 28, 2014) Two American aid workers in Liberia test positive for Ebola while working to combat the deadliest outbreak of the virus ever. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Traditional African Dishes Teach Healthy Eating

Traditional African Dishes Teach Healthy Eating

AP (July 28, 2014) Classes are being offered nationwide to encourage African Americans to learn about cooking fresh foods based on traditional African cuisine. The program is trying to combat obesity, heart disease and other ailments often linked to diet. (July 28) Video provided by AP
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