Featured Research

from universities, journals, and other organizations

Cranberries Might Help Prevent Urinary Infections In Women

Date:
January 23, 2008
Source:
Center for the Advancement of Health
Summary:
Evidence supports drinking cranberry juice -- a familiar home remedy --- to treat urinary tract infection. People have used cranberries, especially cranberry juice, for decades to prevent and treat UTIs. The fruit contains organic substances, such as quinic acid and citric acid, which act as antibacterial agents to help eliminate bacteria from the bladder.

Evidence supports drinking cranberry juice -- a familiar home remedy -- to treat urinary tract infection (UTI), according to a new review from Scotland.

"UTIs can be distressing, and people often take a self-care approach rather than seeking professional advice," said Ruth Jepson, a senior research fellow at the University of Stirling, who led the review. "It is a common problem that a great deal of health care time and resources are spent on."

A diagnosis of a urinary tract infection refers to a presence of a large amount of bacteria in the urine that can cause pain during urination and can lead to more severe infections of the bladder and kidneys.

The aim of the systematic review was to determine whether taking cranberries is an effective way to prevent urinary tract infections.

The review appears in The Cochrane Library an international organization that evaluates research in all aspects of health care. Systematic reviews draw evidence-based conclusions about medical practice after considering both the content and quality of existing trials on a topic.

According to the American Urological Association, UTIs are among the most common medical conditions and are responsible for more than 7 million doctor office visits each year. The association reports that about 40 percent of women and 12 percent of men will experience at least one urinary tract infection during their lifetime.

People have used cranberries, especially cranberry juice, for decades to prevent and treat UTIs. The fruit contains organic substances, such as quinic acid and citric acid, which act as antibacterial agents to help eliminate bacteria from the bladder.

The Cochrane reviewers analyzed 10 studies including 1,049 participants of all ages who received either cranberry products (juice or cranberry capsules), placebo juice or water for at least one month.

Of the studies evaluated, there was no consistent dosage or concentration of cranberries given to the participants, but according to Jepson, there was a "typical amount" given daily.

"The most common amount recommended is one glass twice a day," Jepson said. "Trouble is, there is no general rule as to how long you have to drink that much in order for you to prevent one UTI."

Jepson and her colleague found that cranberry products significantly reduced UTIs over 12 months compared to the placebo/control groups. The cranberry treatment was more effective for women who suffered from recurrent UTIs. For example, in one study, after six months, eight women in the cranberry group had a least one recurring UTI, compared with 19 women in the lactobacillus group and 18 in the control group.

The Cochrane reviewers pointed to a high number of participant withdrawals within some of the studies, and suggested it was due to the taste of cranberry juice or the juice's high cost. Jepson, however, could not recommend that a woman with recurrent UTI use cranberry capsules as an alternative treatment if taste or cost became prohibitive.

"The trouble with capsules is that there is no standardized preparation," said Jepson. "What we don't know is if the active ingredient is as effective when taken in the capsule or tablet form."

Roger Dmochowski, a professor of urology at Vanderbilt University Medical and the American Urological Association's expert on this topic, and said the association has no official policy toward cranberry juice or products.

"Most urologists recommend urine acidification for certain types of infections of the urine," he said. "However not all UTIs are due to non-acid urine. Therefore, it is reasonable to use cranberry extract, but certainly this does not pertain to all UTI indications. This strategy [cranberries] remains an option for women bothered by recurrent infections but only one of many strategies, which include hydration and judicious use of antibiotics."

Jepson RG, Craig JC. Cranberries for preventing urinary tract infections (Review). Cochrane Database of Systematic Reviews 2008, Issue 1.


Story Source:

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


Cite This Page:

Center for the Advancement of Health. "Cranberries Might Help Prevent Urinary Infections In Women." ScienceDaily. ScienceDaily, 23 January 2008. <www.sciencedaily.com/releases/2008/01/080122203326.htm>.
Center for the Advancement of Health. (2008, January 23). Cranberries Might Help Prevent Urinary Infections In Women. ScienceDaily. Retrieved September 20, 2014 from www.sciencedaily.com/releases/2008/01/080122203326.htm
Center for the Advancement of Health. "Cranberries Might Help Prevent Urinary Infections In Women." ScienceDaily. www.sciencedaily.com/releases/2008/01/080122203326.htm (accessed September 20, 2014).

Share This



More Health & Medicine News

Saturday, September 20, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Could Grief Affect The Immune Systems Of Senior Citizens?

Could Grief Affect The Immune Systems Of Senior Citizens?

Newsy (Sep. 19, 2014) The study found elderly people are much more likely to become susceptible to infection than younger adults going though a similar situation. Video provided by Newsy
Powered by NewsLook.com
Jury Delivers Verdict in Salmonella Trial

Jury Delivers Verdict in Salmonella Trial

AP (Sep. 19, 2014) A federal jury has convicted three people in connection with an outbreak of salmonella poisoning five years ago that sickened hundreds of people and was linked to a number of deaths. (Sept. 19) Video provided by AP
Powered by NewsLook.com
How The 'Angelina Jolie Effect' Increased Cancer Screenings

How The 'Angelina Jolie Effect' Increased Cancer Screenings

Newsy (Sep. 19, 2014) Angelina's Jolie's decision to undergo a preventative mastectomy in 2013 inspired many women to seek early screenings for the disease. Video provided by Newsy
Powered by NewsLook.com
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

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