Billions of little helpers
We all have trillions of bacteria living on our skin and in our mouth, nose and intestines.
The gut contains the largest numbers of bacteria, known as the microbiota, and the greatest number of species - the main two species are Lactobacillus and Bifidobacteria.
The bacteria take residence in our bodies from the day we are born and remain with us throughout our lives. The gut bacteria is established in the first 2-3 years of life and play important roles in nutrition, digestion, metabolism, immune function and protection.