IPA Europe contends that the recent studies, questioning the health benefits of probiotics, basically confirm the knowledge that we already have on probiotics: namely that probiotic strains are indeed likely to have individual responses.
It is regrettable that, although the authors themselves state that the microbiota is influenced by very many factors and is extremely diverse, their ‘study group” consists of only 8 people, which is too small to be able to reliably evaluate so many parameters or to draw any far-reaching conclusions.