Study suggests cranberry juice not effective against urinary tract infections

Dec 08, 2010

Drinking cranberry juice has been recommended to decrease the incidence of urinary tract infections, based on observational studies and a few small clinical trials. However, a new study published in the January 1 issue of Clinical Infectious Diseases, and now available online, suggests otherwise.

College-aged women who tested positive for having a urinary tract infection were assigned to drink eight ounces of cranberry juice or a twice a day for either six months or until a recurrence of a urinary tract infection, whichever happened first. Of the participants who suffered a second urinary tract infection, the cranberry juice drinkers had a recurrence rate of almost 20 percent, while those who drank the placebo suffered only a 14 percent recurrence.

"We assumed that we would observe a 30 percent recurrence rate among the placebo group. It is possible that the placebo juice inadvertently contained the active ingredients that reduce urinary tract infection risk, since both juices contained ," explained study author Betsy Foxman, PhD, of the University of Michigan School of Public Health in Ann Arbor. She added, "Another possibility is that the study protocol kept participants better hydrated, leading them to urinate more frequently, therefore decreasing bacterial growth and reducing urinary tract infection symptoms."

Explore further: Syria hit by flesh-eating maggot disease

More information: http://cid.oxfordjournals.org/content/52/1/23.full

add to favorites email to friend print save as pdf

Related Stories

Cranberry juice shows promise blocking Staph infections

Sep 01, 2010

Expanding their scope of study on the mechanisms of bacterial infection, researchers at Worcester Polytechnic Institute (WPI) have reported the surprise finding from a small clinical study that cranberry juice ...

Recommended for you

Syria hit by flesh-eating maggot disease

5 hours ago

Three cases of myiasis have been reported near Damascus, marking the first appearance of the flesh-eating maggot disease in Syria, UN health experts said Friday.

Sperm can carry Ebola for 82 days: WHO

7 hours ago

Sperm can carry the Ebola virus for at least 82 days, the World Health Organization said Friday, urging men recovering from the disease to use condoms for three months after the onset of symptoms.

User comments : 0

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.