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Recent Studies

Cranberries may help in the prevention of urinary tract infections:

Published in the British Medical Journal, 2001, a study ‘Randomised trial of cranberry-lingonberry juice and Lactobacillus GG drink for the prevention of urinary tract infections in women to determine whether recurrences of urinary tract infection can be prevented with cranberry-lingonberry juice or with Lactobacillus GG drink.

It was an open, randomised controlled 12 month follow up trial. With 150 female participants with a urinary tract infection caused by E-coli randomly allocated into three groups. One group was given 50 ml of cranberry-lingonberry juice concentrate daily for six months, the other, 100 ml of lactobacillus drink five days a week for one year and the other had no intervention.

The rate of first recurrence of urinary tract infection during the 12 month follow up differed significantly between the groups. At six months, eight women (16%) in the cranberry group, 19 (39%) in the lactobacillus group, and 18 (36%) in the control group had had at least one recurrence.

They concluded that regular drinking of cranberry juice but not lactobacillus seems to reduce the recurrence of urinary tract infection. "At the end of the treatment period, it was found that women consuming the cranberry juice had suffered about half the number of UTIs compared to untreated women. Interestingly, this protective effect appeared to remain for a further six months despite no additional treatment" Daily Mail, 2001.

Scientists Avorn J, Monane M, Gurwitz JH, et al, conducted and published in JAMA a study suggesting that cranberry may prevent urinary tract infections. "In a double-blind trial, elderly women who drank 10 ounces (300 ml) of cranberry juice per day had a decrease in the amount of bacteria in their urine."

Cranberries may help in the prevention of urinary tract infections:

Scientists Dignam R, Ahmed M, Denman S, et al conducted a study and published it in the American Journal of the Geriatric Society ‘The effect of cranberry juice on UTI rates in a long term care facility’ in 1997. Here elderly residents of a nursing home consumed either four ounces (120 ml) of cranberry juice or six capsules containing concentrated cranberry daily for 13 months. During that time, the number of UTIs decreased by 25%.

A small preliminary trial conducted by Walker EB, Barney DP, Mickelsen JN, et al, published in the Journal of family practice, 1997 ‘Cranberry concentrate: UTI prophylaxis’ found that supplementation with encapsulated cranberry concentrate (400 mg twice per day for three months) significantly reduced the recurrence of UTIs in women (aged 18–45) with a history of recurrent infections.

Sobota AE, in the Journal of Urology, 1984 ‘Inhibition of bacterial adherence by cranberry juice: Potential use for the treatment of urinary tract infections ’ advised research has suggested cranberry may be effective against UTIs because it prevents E. coli, the bacteria that causes most urinary tract infections, from attaching to the walls of the bladder.