Probiotics study casts doubt on universal effectiveness

A new study on the effectiveness of probiotics has uncovered some surprising findings. The study undertaken in Israel has found that taking probiotics doesn't necessarily mean they actually take up residence in your gut. Researchers from the Weizmann Institute of Science undertook a number of experiments exploring the human gut, and found that many people's digestive tracts prevent standard probiotics from successfully colonising them. Dr Olivier Gasser, is the team leader of Translational Immunology at the Malaghan Institute of Medical Research and discusses the findings.