Consumption of probiotics could help promote healthy weight in women, says study

Published on January 29, 2014 at 12:18 AM · No Comments

Certain probiotics could help women lose weight and keep it off, according to a recent study published in the British Journal of Nutrition by a team of researchers headed by Universit- Laval Professor Angelo Tremblay.

Studies have already demonstrated that the intestinal flora of obese individuals differs from that of thin people. That difference may be due to the fact that a diet high in fat and low in fiber promotes certain bacteria at the expense of others. Professor Tremblay and his team tried to determine if the consumption of probiotics could help reset the balance of the intestinal microbiota in favor of bacteria that promote a healthy weight.

To test their hypothesis, researchers recruited 125 overweight men and women. The subjects underwent a 12-week weight-loss diet, followed by a 12-week period aimed at maintaining body weight. Throughout the entire study, half the participants swallowed 2 pills daily containing probiotics from the Lactobacillus rhamnosus family, while the other half received a placebo.

After the 12-week diet period, researchers observed an average weight loss of 4.4 kg in women in the probiotic group and 2.6 kg in the placebo group. However, no differences in weight loss were observed among males in the two groups. "We don't know why the probiotics didn't have any effect on men. It may be a question of dosage, or the study period may have been too short," says Professor Tremblay, who is also the Canada Research Chair in Environment and Energy Balance.

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