Bifidobacteria are among the first microbes to colonise the gut and are being purported as beneficial for human health. In addition to the presence in the human intestines, bifidobacterial species also naturally occur in a range of ecological niches such as animal intestines, sewage, and foods. 

Accumulating evidence indicates that bifidobacteria have coevolved with their respective hosts and could be categorised into two major groups; those naturally reside in human intestines are called Human-Residential Bifidobacteria (HRB), whereas others as non-HRB. 

It is more evidence that HRB possess numerous unique physiological characteristics that non-HRB do not have, contributing to their beneficial roles in promoting human health. 

Morinaga Milk offers a premium line of bifidobacterial probiotics of high compatibility with humans.