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Food poisoning is an acute disease caused by ingestion of contaminated food. In cases of bacterial food poisoning would need a few one hundred thousand or a million bacteria to cause disease.

particles of food-borne disease caused by bacteria and viruses that cause similar symptoms as food poisoning, but few bacteria or viruses are needed, sometimes with only five. They are also known as a low dose of pathogens.

Examples of physical agents of diseaseare: E coli, Campylobacter, Listeria, Norovirus, Shigella, typhoid, cholera and hepatitis A. The main symptoms of food poisoning and physical illness are nausea, vomiting, abdominal cramps and diarrhea. There are other symptoms, with some bacteria, such as fever, malaise, fatigue, etc. The symptoms are the body's defense mechanisms in action. In our neck, esophagus and stomach, we chemoreceptors, please unwanted chemicals. Some of theseunwanted chemicals are present on the skin of bacteria, viruses. Receptors, the brain, including a brain area called the "vomiting center", the brain relays messages to the esophagus, which gives a sense of nausea and stomach to lead all contents (pipe vomiting). We have a line of defense, the hydrochloric acid produced by specialized cells in the stomach, parietal cells. The acid will kill most microorganisms, regardless of acid-tolerant as childrenE coli and food particles protected. Therefore, no pre-biotic bacteria work, they are immediately killed by the gastric fluid. To pre-destructive work, were to reach the small intestine. It is estimated that there would be 11 liters of pre-biotic drinks to drink at once, for some of the "good bacteria" in your stomach to overcome the small intestine and reach!

Sometimes the acid tolerant pathogens and those that are beyond the acid bathAttempts to reach the small intestine. These bacteria are observed cell walls and began to grow in an environment rich in nutrients the small intestine. The brain sends an army of antibodies in this area struggle with strangers from entering. The fight, along with the rapid growth of bacteria and excretion of toxins leads to stomach cramps. It is suspected that many of the pains, fever and other inflammatory disorders are the result of the immune system into action, and notcaused by the influence of bacteria, viruses or toxins.

Diarrhea is the last stage of bacterial clean-out. Some scientists think that diarrhea is the second phase starts with the brain to expel the invaders, and some believe that this action of bacteria in the colon to them as quickly as possible free to reproduce outside the body. Darwin's theory of survival of the fittest can be detected.

Charles Darwin publishes "On the origin of species by means ofNatural Selection "in 1859. I suggested:

1 Within a given species, several persons through reproduction than can survive within the constraints (eg, food supply) species in the environment.

2 There is thus a struggle for existence, as a result of the difference between the number of people playing and the number that survive.

3 people in a species show variation, no two people are exactly the same (althoughwhich is described as "identical" twins). People with superior characteristics most likely to survive, and then play in the struggle for existence.

4 people that tend to children with their parents (the principle of inheritance is shown). Provided that the advantageous characters that promote survival are inherited by offspring, citizens will have the characters be more widespread in the population over successive generations, becauseare more likely than those who do not have the character to survive and reproduce in the next generation.

Cholera and typhoid, for example, will not be able to correct and continue their species, unless the body and infect other hosts. So it is in their interest to release them by two points as soon as possible to continue in their quest for survival.

Check out the latest installment of bacteria. Friend of foe? Arrivalquickly.

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