Why Getting Dirty Can Be Healthy for Children
30 июля 2013

Why Getting Dirty Can Be Healthy for Children

Why Getting Dirty Can Be Healthy for Children
This is the VOA Special English Health Report, from voaspecialenglish.com | facebook.com/voalearningenglish A new study suggests that early exposure to germs strengthens the immune system. That means letting children get a little dirty might be good for their health later in life. The study involved laboratory mice. It found that adult mice raised in a germ-free environment were more likely to develop allergies, asthma and other autoimmune disorders. There are more than eighty disorders where cells that normally defend the body instead attack tissues and organs. They include rheumatoid arthritis, which attacks the joints; Crohn's disease, an inflammatory bowel condition; and juvenile diabetes. Hay fever, a common allergy, is also an autoimmune disorder.Richard Blumberg is a professor at Harvard Medical School in Boston, Massachusetts. He says in nineteen eighty-nine, medical researchers sought to explain these diseases with what they called the "hygiene hypothesis." They proposed that the increasing use of antibacterial soaps and other products, especially early in life, could weaken immune systems. Now, Dr. Blumberg and a team have what they say is the first biological evidence to link early exposure to germs to stronger adult immune systems. They say this exposure could prevent the development of some autoimmune diseases. In the adult germ-free mice, they found that inflammation in the lungs and colon was caused by so-called killer T cells. These normally fight infection. But they became overactive and targeted healthy tissue -- an autoimmune condition seen in asthma and a disease called ulcerative colitis. Dr. Blumberg says the mice raised in a normal environment did not have the same reaction. He says their immune systems had been "educated" by early exposure to germs. Rates of autoimmune disorders are rising worldwide, but mostly in wealthier, industrialized countries. Mr. Blumberg says one "obvious question" is whether doctors should be more careful to limit antibiotic use early in life.Rob Dunn is a professor of ecology and evolutionary biology at North Carolina State University in Raleigh. He says the new study does not mean people should stop washing. In his words, "Wash your hands, but don't do it with antimicrobial soap. Let your kids play in a reasonable amount of dirt and get outside and get exposed to a diversity of things." The study appears in the journal Science. For VOA Special English, I'm Carolyn Presutti. (Adapted from a radio program broadcast 04Apr2012)
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#1 написал: Miguel Garc?a (1 августа 2013 13:30)
yeah,? I guess they?re just the right thing
#2 написал: thefuckingmegadave (1 августа 2013 13:30)
The poor doesn?t see a doctor because they can?t afford it. It?s quite reasonably to live among some dirt, but the opposite extreme it?s absolutely? not good. In all advanced societies, people with a low economic rate comes a lot to the doctor. Think about people without heating system at home or with a poor diet. They can?t enjoy a good health at all. What you are talking about is only natural selection: only the strong ones survive in a poor environment.
#3 написал: Navreet Singh (1 августа 2013 13:30)
the? titling for this is horrible.
#4 написал: TezukaKohei (1 августа 2013 13:30)
Not just auto-immune but also lower response time? to actual invaders
#5 написал: nikkinguyen24 (1 августа 2013 13:30)
good? speaking and listening!
#6 написал: Long Nguy?n V? (1 августа 2013 13:30)
That's true . Children live in too clean environment are easily targeted to be infected by diseases . Because they didn't get used to the outside world which is somewhat "unclean" , their body couldn't develope an autoantibiotic systems correctly . Well then, let's kids play in the garden, don't worry about them too much .?
#7 написал: chronicreader (1 августа 2013 13:30)
What is so surprising about this? Being exposed to a low level of germs makes our bodies build up immunity. I have known this all my life. I don't? need scientists to tell me the obvious. I was raised in an environment where we played outside and were allowed to get dirty. I am now in my 60s and healthy as a horse.
#8 написал: yin ng (1 августа 2013 13:30)
That's? why peasants' kids are definitely much robust than the sheltered rich people's kids. And the many the poor don't even see doctors most of the time in their life..
#9 написал: GeminiGuy88 (1 августа 2013 13:30)
is feces? ok ?
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