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Probiotics shorten diarrhea episodes, review suggests

Date:
November 10, 2010
Source:
Wiley-Blackwell
Summary:
Probiotic bacteria given as therapies for diarrhea reduce the length of time sufferers are affected and lessen the chance of episodes continuing for more than four days.

Probiotic bacteria given as therapies for diarrhea reduce the length of time sufferers are affected and lessen the chance of episodes continuing for more than four days. These are the findings of a new systematic review by Cochrane researchers.

Every year, diarrheal diseases kill nearly two million people in developing countries, mostly young children. The main treatment is rehydration fluids, but these do not tend to reduce the length of illness, which is crucial in reducing the risk of persistent diarrhea. Probiotics, so-called "good bacteria," may help in a variety of different ways including eliminating the bacteria, viruses or parasites responsible, for example, by competing for the same nutrients. A previous Cochrane review showed benefits with probiotics in diarrheal disease, but the current report reviews data from a far larger evidence base.

The researchers reviewed data from 63 trials involving a total of 8,014 patients, over four times the number involved in the previous study. 56 trials focused on infants and young children. Giving probiotics in conjunction with rehydration fluids reduced the duration of diarrhea by around a day and reduced the risk of diarrhea lasting four or more days by 59%. No serious adverse effects were reported in the trials and although vomiting was quite common it also occurred with placebos.

"A striking finding of this review is that most trials reported that probiotics reduced diarrhea," said lead researcher Stephen Allen of the School of Medicine at Swansea University, UK. "The beneficial effect was consistent and significant across many different types of trials."

"There were no adverse effects, so these therapies can be used safely in addition to rehydration fluids. However, more research needs to be carried out on the specific strains of bacteria that are effective in treating diarrhea and on preventing the progression from short-term to persistent diarrhea," Allen said.

A second review, by a separate group of Cochrane researchers, examined the use of probiotics for treating persistent diarrhea reviewing data from trials undertaken exclusively in children. The review found that probiotics can reduce the length of an episode of persistent diarrhea, however, the authors stress that the review was based on just four trials involving 464 patients and therefore provides only limited evidence of benefit.


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The above story is based on materials provided by Wiley-Blackwell. Note: Materials may be edited for content and length.


Cite This Page:

Wiley-Blackwell. "Probiotics shorten diarrhea episodes, review suggests." ScienceDaily. ScienceDaily, 10 November 2010. <www.sciencedaily.com/releases/2010/11/101109191748.htm>.
Wiley-Blackwell. (2010, November 10). Probiotics shorten diarrhea episodes, review suggests. ScienceDaily. Retrieved July 24, 2014 from www.sciencedaily.com/releases/2010/11/101109191748.htm
Wiley-Blackwell. "Probiotics shorten diarrhea episodes, review suggests." ScienceDaily. www.sciencedaily.com/releases/2010/11/101109191748.htm (accessed July 24, 2014).

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