Featured Research

from universities, journals, and other organizations

Statins Don't Lower Risk Of Pneumonia In Elderly, Study Shows

Date:
June 21, 2009
Source:
Group Health Cooperative Center for Health Studies
Summary:
Popular cholesterol-lowering statin drugs like Lipitor (atorvastatin) don't lower the risk of pneumonia, according to a new study. Prior research based on automated claims data had raised some hope -- and hype -- for statins to prevent and treat infections including pneumonia. But using medical records for more detailed information, the researchers found pneumonia risk was higher (26 percent) in people using a statin than in those not using any.

Taking popular cholesterol-lowering statin drugs, such as Lipitor® (atorvastatin), does not lower the risk of pneumonia. That's the new finding from a study of more than 3,000 Group Health patients published online on June 16 in advance of the British Medical Journal's June 20 print issue.

"Prior research based on automated claims data had raised some hope—and maybe some hype—for statins as a way to prevent and treat infections including pneumonia," said Sascha Dublin, MD, PhD, a physician at Group Health and assistant investigator at Group Health Center for Health Studies. "But when we used medical records to get more detailed information about patients, our findings didn't support that approach."

In fact, Dublin's population-based case-control study found that pneumonia risk was, if anything, slightly higher (26%) in people using a statin than in those not using any; and this extra risk was even higher (61%) for pneumonia severe enough to require being hospitalized.

"As a doctor, I'm a fan of statins for what they've been proven to do: lowering cholesterol and risk of heart disease and stroke in people who've had either disease or are at risk for them," said Dublin. Statins are HMG coenzyme A reductase inhibitors, which also include Zocor® (simvastatin) and Mevacor® (lovastatin). This class of medications lessens inflammation, which plays a role in infections.

"But now we and some others have found that statins may have gotten some unearned credit for health benefits that they don't actually have, including preventing pneumonia," Dublin said.

Suggestions from prior research had led to calls for expensive randomized controlled trials of statins to prevent or treat infection. "But our study indicates that such trials would be an ill-advised use of limited research funds at this time," she added.

Why the discrepancy between this new study and earlier ones? "Healthy-user bias is one reason," said Dublin. In other words, compared to people who don't take statins, those who do may be healthier and have healthier habits that lower their risks of unrelated diseases such as pneumonia. And that's just what she found: Study patients who were on statins were less frail or disabled and also more likely to be vaccinated against flu or pneumococcal pneumonia. They were less likely to smoke, to have dementia, or to need help with bathing or walking.

Unlike the previous research on statins and pneumonia, Dublin's study made great efforts to control for this bias, including reviewing medical records in detail for every study subject. It confirmed that every pneumonia event was a true case of pneumonia, which prior studies rarely did. And it focused on relatively healthy elderly people. All had intact immune systems and none lived in a nursing home. She studied the same 65- to 94-year-old patients, with their records coded to protect their privacy, as in earlier Group Health research, published in The Lancet in 2008. That work showed the flu vaccine didn't protect the elderly from pneumonia as much as had been thought.

"We did an old-fashioned 'chart review,'" said Dublin. "By reading the text in the medical records, you catch crucial details."

Dublin holds a Paul B. Beeson Career Development Award from the National Institute on Aging, American Federation for Aging Research, John A. Hartford Foundation, Atlantic Philanthropies, and Starr Foundation. Group Health Center for Health Studies internal funds covered the data collection and analysis.

Dublin's study co-authors were Michael L. Jackson, PhD, of the Centers for Disease Control and Prevention (CDC) in Atlanta; Noel S. Weiss, MD, DrPH, of the University of Washington; and Jennifer C. Nelson, PhD, Eric B. Larson, MD, MPH, and Lisa A. Jackson, MD, MPH, of Group Health Center for Health Studies.


Story Source:

The above story is based on materials provided by Group Health Cooperative Center for Health Studies. Note: Materials may be edited for content and length.


Cite This Page:

Group Health Cooperative Center for Health Studies. "Statins Don't Lower Risk Of Pneumonia In Elderly, Study Shows." ScienceDaily. ScienceDaily, 21 June 2009. <www.sciencedaily.com/releases/2009/06/090616182353.htm>.
Group Health Cooperative Center for Health Studies. (2009, June 21). Statins Don't Lower Risk Of Pneumonia In Elderly, Study Shows. ScienceDaily. Retrieved August 1, 2014 from www.sciencedaily.com/releases/2009/06/090616182353.htm
Group Health Cooperative Center for Health Studies. "Statins Don't Lower Risk Of Pneumonia In Elderly, Study Shows." ScienceDaily. www.sciencedaily.com/releases/2009/06/090616182353.htm (accessed August 1, 2014).

Share This




More Health & Medicine News

Friday, August 1, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Texas Quintuplets Head Home

Texas Quintuplets Head Home

Reuters - US Online Video (Aug. 1, 2014) — After four months in the hospital, the first quintuplets to be born at Baylor University Medical Center head home. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Ebola Patient Coming to U.S. for Treatment

Ebola Patient Coming to U.S. for Treatment

Reuters - US Online Video (Aug. 1, 2014) — A U.S. aid worker infected with Ebola while working in West Africa will be treated in a high security ward at Emory University in Atlanta. Linda So reports. Video provided by Reuters
Powered by NewsLook.com
Ebola Vaccine Might Be Coming, But Where's It Been?

Ebola Vaccine Might Be Coming, But Where's It Been?

Newsy (Aug. 1, 2014) — Health officials are working to fast-track a vaccine — the West-African Ebola outbreak has killed more than 700. But why didn't we already have one? Video provided by Newsy
Powered by NewsLook.com
Study Links Certain Birth Control Pills To Breast Cancer

Study Links Certain Birth Control Pills To Breast Cancer

Newsy (Aug. 1, 2014) — Previous studies have made the link between birth control and breast cancer, but the latest makes the link to high-estrogen oral contraceptives. 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