Featured Research

from universities, journals, and other organizations

Mental stress may be harder on women's hearts

Date:
April 24, 2012
Source:
American Physiological Society (APS)
Summary:
New findings could help explain why women are more likely than men to have coronary symptoms after emotional upsets.

Coronary artery disease continues to be a major cause of death in the U.S., killing hundreds of thousands of people per year. However, this disease burden isn't evenly divided between the sexes; significantly more men than women are diagnosed with coronary artery disease each year. The reasons behind this difference aren't well defined. Though some studies have shown that men's hearts become more constricted than women's during exercise, letting less blood flow through, women are more likely than men to have symptoms of heart trouble after emotional upsets.

Searching for the reasons behind these disparities, Charity L. Sauder, Alison E. Thompson, Terrell Myers, and Chester A. Ray, all of Penn State College of Medicine, investigated the effects of mental stress on blood flow through the heart. Their findings show that coronary blood flow actually increases in men during mental stress, but shows no change in women. These results may explain why women could be more susceptible to adverse cardiac events when under stress.

An abstract of their study entitled, "Effect of Mental Stress on Coronary Blood Flow in Humans," was discussed at the meeting Experimental Biology 2012, held April 21-25 at the San Diego Convention Center.

Stressing the Sexes The researchers recruited 17 healthy adults, a near equal mix of men and women. Each volunteer had his or her heart rate and blood pressure measured at rest, as well as coronary vascular conductance, a Doppler ultrasound measure of blood flow through the coronary blood vessels of the heart.

These volunteers then underwent the same tests while participating in three minutes of mental arithmetic, in which the researchers had them sequentially subtract 7 starting with a random number. To increase the stress load, researchers lightly badgered the volunteers during the task, urging them to hurry up or telling them they were wrong even when they gave the correct number. At the end of the task, they underwent the same three heart function tests again.

Results showed that at rest, men and women showed little differences between the three tests. During the mental arithmetic task, all the volunteers showed an increase in heart rate and blood pressure, regardless of sex. However, while the men showed an increase in coronary vascular conductance under stress, the women showed no change.

Taking Differences to Heart This differing characteristic could potentially predispose women to heart problems while under stress, says study leader Chester Ray. He adds that the results came as a surprise, since previous studies men have significantly less blood flow than women during the physical stress of exercise, and could explain why women tend to have more heart troubles after stressful events, such as losing a spouse. The findings also reemphasize the importance of mental stress in affecting health.

"Stress reduction is important for anyone, regardless of gender," he explains, "but this study shines a light on how stress differently affects the hearts of women, potentially putting them at greater risk of a coronary event."

Further research, he says, could discern the mechanism behind this difference, leading to more targeted treatments and prevention efforts for women at risk of coronary artery disease.


Story Source:

The above story is based on materials provided by American Physiological Society (APS). Note: Materials may be edited for content and length.


Cite This Page:

American Physiological Society (APS). "Mental stress may be harder on women's hearts." ScienceDaily. ScienceDaily, 24 April 2012. <www.sciencedaily.com/releases/2012/04/120424205137.htm>.
American Physiological Society (APS). (2012, April 24). Mental stress may be harder on women's hearts. ScienceDaily. Retrieved September 2, 2014 from www.sciencedaily.com/releases/2012/04/120424205137.htm
American Physiological Society (APS). "Mental stress may be harder on women's hearts." ScienceDaily. www.sciencedaily.com/releases/2012/04/120424205137.htm (accessed September 2, 2014).

Share This




More Health & Medicine News

Tuesday, September 2, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Get on Your Bike! London Cycling Popularity Soars Despite Danger

Get on Your Bike! London Cycling Popularity Soars Despite Danger

AFP (Sep. 1, 2014) Wedged between buses, lorries and cars, cycling in London isn't for the faint hearted. Nevertheless the number of people choosing to bike in the British capital has doubled over the past 15 years. Duration: 02:27 Video provided by AFP
Powered by NewsLook.com
Can You Train Your Brain To Eat Healthy?

Can You Train Your Brain To Eat Healthy?

Newsy (Sep. 1, 2014) New research says if you condition yourself to eat healthy foods, eventually you'll crave them instead of junk food. Video provided by Newsy
Powered by NewsLook.com
We've Got Mites Living In Our Faces And So Do You

We've Got Mites Living In Our Faces And So Do You

Newsy (Aug. 30, 2014) A new study suggests 100 percent of adult humans (those over 18 years of age) have Demodex mites living in their faces. Video provided by Newsy
Powered by NewsLook.com
Liberia Continues Fight Against Ebola

Liberia Continues Fight Against Ebola

AFP (Aug. 30, 2014) Authorities in Liberia try to stem the spread of the Ebola epidemic by raising awareness and setting up sanitation units for people to wash their hands. Duration: 00:41 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