When you stop looking after your garden and the weeds take over, it can get into trouble. The same happens in your gut when bad bacteria take over (for example, sickness, disease, diarrhoea).
In short, the microbial ecosystem in the gut has to be healthy for you to be healthy. When our gut bacteria are out of balance, we can become sick. When you have too many bad bacteria this can become a problem.
That’s where probiotics come into play, as they help to improve the balance and therefore our overall health.