http://news.sciencemag.org/biology/2013/11/gut-bacteria-may-cause-rheumatoid-arthritisThe bacteria that live in your intestines are a mixed blessing. Scientists have known for decades that this so-called microbiota helps us digest our food and crowds out infectious germs. The bugs have also been implicated in allergies and obesity. Now, a new study adds one more potential malady to the list: rheumatoid arthritis.
"It's been suspected for years and years, both in humans and in the animal model, that the development of autoimmune diseases like arthritis is dependent on the gut microbiota," says immunologist Diane Mathis of Harvard Medical School in Boston. Now, she says, those suspicions are beginning to be confirmed in humans. "It's a very striking finding.”
Rheumatoid arthritis is a mysterious disease. It can strike at any age, typically beginning in young and middle-aged adults and causing painfully stiff, swollen joints in the hands and feet. It can also destroy bone and cartilage and damage organs like the lungs and kidneys. Scientists aren’t sure what causes rheumatoid arthritis, but they do know that it’s an autoimmune disorder, meaning that the body's immune system is attacking its own tissues. And that's where gut bacteria come in.
Gut bacteria have an intricate relationship with our immune system. We need to be able to tolerate helpful microbes while still recognizing and fighting invaders. Immunologist Dan Littman of New York University knew that gut microbes are important to the development of a particular type of immune cell his team studies, known as a Th17 cell. Mice that are reared in sterile conditions produce very few of these cells, and his group had previously found that mice bought from one supplier had far more Th17 cells than those that came from a different supplier. The difference turned out to be due to the rodents' gut microbes...........
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Second article posted on the subject. A good site about the subject and improving your flora balance is at:
http://www.culturedfoodlife.com
