You are your bacteria! The probiotics and the antibiotics...
There has been on going discussions about how our gut bacteria is important for a healthy lifestyle.
Figure 1: Schematic diagram illustrating potential or known mechanisms whereby probiotic bacteria might impact on the microbiota. These mechanisms include (1) competition for dietary ingredients as growth substrates, (2) bioconversion of, for example, sugars into fermentation products with inhibitory properties, (3) production of growth substrates, for example, EPS or vitamins, for other bacteria, (4) direct antagonism by bacteriocins, (5) competitive exclusion for binding sites, (6) improved barrier function, (7) reduction of inflammation, thus altering intestinal properties for colonization and persistence within, and (8) stimulation of innate immune response (by unknown mechanisms). IEC: epithelial cells, DC: dendritic cells, T:T-cells. For further details, see main text.
Also, an online search provides numerous articles about diet aspect that alters our gut bacteria.
As far as the GIT is concerned, health, lifestyle, eating habits and the environment a person is living may be at large influence and affect one's gut microbes.
Are there day to day encounters, in-depth examples and references that can prove the factors which influence our gut microbes the most?