Question

bacteria that live in the body Is it good are bad.

Answer 1

Almost every organ in the Gastrointestinal tract of human body is inhabited by the bacterias. These are called as commensal bacteria . These are good bacterias but may lead to developement of oppurtunistic infections in the immunocompromised people though . These bacterias basically by inhabiting any organ prevent the colonization of that organ by other pathogenic bacgerias by competing with them for the nutrients . That why destroyal of these organisms , say sometimes by giving the antibiotics may lead to diarrohhea . This is the most important function of them , be it skin and the organs they are inhabiting inside our body .

Apart from this in the colon , these are also associated with the production of vitamin B12 and vitamin K .

Lactobaccilus produce lactase that helps in lactose digestion.

So all in all , these bacterias are good .