I’ve read so many things on this subject and I’m still no nearer to understanding it!
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There’s all sorts of bacteria living inside and outside of us. They all do different things that can help us or just don’t bother us enough for our bodies to care and some that try to harm us.
The bacteria in your mouth help digest certain types of food molecules and whatnot.
Some bacteria in our guts help out our immune system for a free ride. A type of symbiotic relationship between our bodies cells and bacteria.
One type of bacteria activates a inflammatory response for our immune system. Another type controls how much of our immune system actually responds to an invader. That way our immune system doesn’t take us out too.
Our immune system is very complex and has many many systems that work together to protect us.
Bacteria that lives inside of us have proteins on their surface that interact with our immune cells to give off the sign that our immune cells register as friendly. Some harmful bacteria and viruses have evolved a similar types of way to attack our immune systems.
We first get our first dose of friendly bacteria through our mothers birth canal or through our mothers skin if they had a c-section. We get the rest through our everyday environment and food. Bacteria is everywhere after all.
Hope this helps you out, there’s still a lot of research that is being done on this subject still so time will tell for more information.
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