Humans seek friendly bacteria for probiotic gut times

Frozen yoghurt can be a yummy treat, as well as helping to provide your child with some friendly bacteria to help stave off infectious diarrhoea. - Filepic

The market for pills and yoghurts containing ‘friendly’ bacteria is worth billions of dollars, but do claims for them stack up?

Chances are, you think you're an individual. Within a few social, economic and legal constraints, you probably see yourself as pretty autonomous. The reality, however, is that you're more of an ecosystem than an individual. There are 10 times more microbial cells in your body than human ones.