Pls help me to correct my artical! (life science)

Dear friends,

I am a new face in this forum and I would like to be good at English. I am not confident in my writing due to I alway get a lot of comments in grammatical structure. Therefore, I need all of you to help me to correct my assay to improve my skill. Thanking you in advance.

P.S. How to post the photo in the profile?

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Have you ever been a stomachache?

What is the reason?

You may say stress, foods poisoning or anything else, but may be not…..

This article is relevant to the scientists who won the Nobel Prize in Physiology and Medicine in this year. You should know about it because of 15% of humans have this symptom and this topic has been recognized as the “remarkable and unexpected discovery".

Until Warren and Marshall's found in 1979, physicians had thought that an excess of stomach acid caused by stress ate away at the stomach lining and lead to ulcers. The treatments prescribed ranged from a bland diet to drugs that blocked stomach acid production to, finally, surgery. Then, while examining tissue samples from the stomachs of ulcer patients, Warren noticed the presence of spiral-shaped bacteria. No one expected that such organisms could withstand the harsh acidic conditions in the stomach (the pH in the stomach is 1.0-4.0). But these crafty microbes appeared to live under the thick mucus layer of the stomach lining and, in Warren's observations, suspiciously close to areas of inflammation. It took Warren, with the help of young trainee, Marshall, to finally cultivate the bacterium in the laboratory in 1982. The microbe was named Helicobacter pylori.

However, the clinical community was suspicious about their finding and it took a remarkable length of time for their discovery to become the mainstream. In the standard medical teaching at that time students learned that there were no bacteria in the gut because of extreme acidity habitat and everybody thought Warren and Marshall were mad to propose this project. In 1985, Marshall performed experiment on his body to prove that these bacteria caused gastric illness. He infected himself with this bacteria and he became stomach ulcer.

Nowadays, peptic ulcer is no longer a chronic or disabling disease. Researchers now know that about 50 percent of humans host the bacteria in their stomachs. Fortunately, not every person who has the microbe in residence will experience ulcers, but symptoms do occur in some 10 to 15 percent of those who do. H. pylori creates problems, because it naturally releases chemicals that attract cells that induce stomach irritation. The organism is also a good swimmer and easily evades the stomach's muscle contractions, which work to flush out other contents. Without treatment, the bacteria can cause large ulcers and also predispose a person to stomach cancer.

Today, the most effective remedy for ulcers is a regimen of antibiotics. There is some debate that eradicating the bacteria could lead to other diseases. This discovery of the link between stomach disease and microbe suggests possibility that microbe cause other chronic inflammatory conditions such as ulcerative colitis, atherosclerosis and stomach cancer. Let’s appreciate their discovery to improve the human welfare. For more details, please visit http://nobelprize.org .

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