Why don't we get ill as a result of having billions of bacteria in our stomach?

Answer 1

Microbes that colonize the human body are referred to as normal flora. Normal flora can be found in many sites of the human body including the stomach.The human body (host)-normal flora(microbes) relationship is usually described as either mutualistic-both the host and the microbe benefit;or commensalistic- one partner of the relationship benefits (usually the microbe) and the other partner (usually the host) is neither benefited nor harmed.
Sometimes in certain situations, good-standing members of the normal flora can cause disease or invading pathogens can displace them thus resulting to a disease.
Talking about stomach specifically, it has a highly acidic (pH 1-2) environment that no many organisms had adapted to live.Only Gram negative bacterium called Helicobacter pylori has been discovered living in the human stomach. H. pylori is the causative agent of gastric ulcers but the fact that the majority of people colonized with H. pylori never develop ulcers has prompted microbiologists to suggest that H. pylori should be considered the normal flora of the human stomach.

Answer 2

For the most part, your digestive tract is designed to kill any bacteria it encounters. Between the HCl in your stomach and the myriad of digestive enzymes present throughout your GI tract, very few organisms will survive.

That said, there are certain species of bacteria which have adapted to live in the harsh conditions of the human GI tract. Most are harmless, and some even help with digestions.

Unfortunately, there are also a handful of species of bacteria which can survive in the GI tract and causes various problems. For example, Helicobater pylori can cause ulcers, E. coli OH157 can cause bloody diarrhea, and Vibrio cholera causes cholera.

The end result is that unless you eat something that happens to contain certain harmful bacteria, your GI tract will take care of any bacteria that might be present.

Answer 3

These bacteria are a part of us. They do not cause disease as pathogenic bacteria do. They simply help us break down food and even supply us with some necessary vitamins without creating a toxic byproduct or attempting to damage our tissue and spread. I guess you could call it a symbiotic relationship.

Answer 4

There are 2 types of bacteria.

Constructive and destructive.

The bacteria in stomach are constructive and without them you can ' t live.

Clear

now show me your homework.

Answer 5

Because our stomach has Hydrochloric Acid present in it which dissolves themm off.It's so strong that it can even dissolve a small piece of bone.But HCl doesn't dissolve the stomach itself as there is a mucosal lining in the stomach which protects our stomach from HCl

Answer 6

i think in stomach there is HCL which act as barier aganist bac.also IG A AS surface antibody..
but not all like HELECOBACTER PYLORI can lives in stomach BCZ it secret URASE ENZYME and neutralize the acidity and cause gastric and deudenal ulcer

Answer 7

They are your very own pet bacteria, not dead cow bacteria, there is a difference, not all bacteria are the same, you know.

Answer 8

who told u that wrong information..i think u mean the mouth or the intestines not the stomach

Answer 9

COZ some (majority) of them are GOOD BACTERIA

Answer 10

because it is part of us