Featured Research

from universities, journals, and other organizations

Poor cardiovascular health linked to memory, learning deficits

Date:
June 11, 2014
Source:
American Heart Association
Summary:
People with poor cardiovascular health have a substantially higher incidence of cognitive impairment. Better cardiovascular health was more common in men and among people with higher education and higher income. The incidence of mental impairment was found more commonly in those with a lower income, who lived in the 'stroke belt' or had cardiovascular disease.

Blood flow blocked in brain.
Credit: American Heart Association

The risk of developing cognitive impairment, especially learning and memory problems, is significantly greater for people with poor cardiovascular health than people with intermediate or ideal cardiovascular health, according to a study in the Journal of the American Heart Association.

Cardiovascular health plays a critical role in brain health, with several cardiovascular risk factors also playing a role in higher risk for cognitive decline.

Researchers found that people with the lowest cardiovascular health scores were more likely have impairment on learning, memory and verbal fluency tests than their counterparts with intermediate or better risk profiles.

The study involved 17,761 people aged 45 and older at the outset who had normal cognitive function and no history of stroke. Mental function was evaluated four years later.

Researchers used data from the Reasons for Geographic and Racial Differences in Stroke (REGARDS) Study to determine cardiovascular health status based on The American Heart Association Life's Simple 7™ score. The REGARDS study population is 55 percent women, 42 percent blacks, 58 percent whites and 56 percent are residents of the "stroke belt" states of Alabama, Arkansas, Georgia, Louisiana, Mississippi, North Carolina, South Carolina and Tennessee.

The Life's Simple 7™ initiative is a new system to measure the benefits of modifiable health behaviors and risk factors in cardiovascular health, such as smoking, diet, physical activity, body mass index, blood pressure, total cholesterol, and fasting glucose. It classifies each of the seven factors of heart health as either poor, intermediate or ideal.

After accounting for differences in age, sex, race and education, researchers identified cognitive impairment in:

  • 4.6 percent of people with the worst cardiovascular health scores;
  • 2.7 percent of those with intermediate health profiles; and
  • 2.6 percent of those in the best cardiovascular health category.

"Even when ideal cardiovascular health is not achieved intermediate levels of cardiovascular health are preferable to low levels for better cognitive function," said lead investigator Evan L. Thacker, Ph.D., an assistant professor and chronic disease epidemiologist at Brigham Young University Department of Health Science, in Provo, Utah.

"This is an encouraging message because intermediate cardiovascular health is a more realistic target for many individuals than ideal cardiovascular health."

The differences were seen regardless of race, gender, pre-existing cardiovascular conditions, or geographic region, although higher cardiovascular health scores were more common in men, people with higher education, higher income, and among people without any cardiovascular disease.

Cognitive function assessments involved tests to measure verbal learning, memory and fluency. Verbal learning was determined using a three-trial, ten-item word list, while verbal memory was assessed by free recall of the ten-item list after a brief delay filled with non-cognitive questions. Verbal fluency was determined by asking each participant to name as many animals as possible in 60 seconds.

Although mechanisms that might explain the findings remain unclear, Thacker said that undetected subclinical strokes could not be ruled out.


Story Source:

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


Journal Reference:

  1. Evan L. Thacker et al. The American Heart Association Life's Simple 7 and Incident Cognitive Impairment: The REasons for Geographic And Racial Differences in Stroke (REGARDS) Study. Journal of the American Heart Association, June 2014 DOI: 10.1161/%u200BJAHA.113.000635

Cite This Page:

American Heart Association. "Poor cardiovascular health linked to memory, learning deficits." ScienceDaily. ScienceDaily, 11 June 2014. <www.sciencedaily.com/releases/2014/06/140611170956.htm>.
American Heart Association. (2014, June 11). Poor cardiovascular health linked to memory, learning deficits. ScienceDaily. Retrieved July 22, 2014 from www.sciencedaily.com/releases/2014/06/140611170956.htm
American Heart Association. "Poor cardiovascular health linked to memory, learning deficits." ScienceDaily. www.sciencedaily.com/releases/2014/06/140611170956.htm (accessed July 22, 2014).

Share This




More Health & Medicine News

Tuesday, July 22, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Why Do People Believe We Only Use 10 Percent Of Our Brains?

Newsy (July 22, 2014) The new sci-fi thriller "Lucy" is making people question whether we really use all our brainpower. But, as scientists have insisted for years, we do. Video provided by Newsy
Powered by NewsLook.com
Scientists Find New Way To Make Human Platelets

Scientists Find New Way To Make Human Platelets

Newsy (July 22, 2014) Boston scientists have discovered a new way to create fully functioning human platelets using a bioreactor and human stem cells. Video provided by Newsy
Powered by NewsLook.com
Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

Gilead's $1000-a-Pill Drug Could Cure Hep C in HIV-Positive People

TheStreet (July 21, 2014) New research shows Gilead Science's drug Sovaldi helps in curing hepatitis C in those who suffer from HIV. In a medical study, the combination of Gilead's Hep C drug with anti-viral drug Ribavirin cured 76% of HIV-positive patients suffering from the most common hepatitis C strain. Hepatitis C and related complications have been a top cause of death in HIV-positive patients. Typical medication used to treat the disease, including interferon proteins, tended to react badly with HIV drugs. However, Sovaldi's %1,000-a-pill price tag could limit the number of patients able to access the treatment. TheStreet's Keris Lahiff reports from New York. Video provided by TheStreet
Powered by NewsLook.com
$23.6 Billion Awarded To Widow In Smoking Lawsuit

$23.6 Billion Awarded To Widow In Smoking Lawsuit

Newsy (July 20, 2014) Cynthia Robinson claims R.J. Reynolds Tobacco Company hid the health and addiction risks of its products, leading to the death of her husband in 1996. 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:
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