Thursday, September 25, 2008

Fish Reducing Eczema and Outdoor Pools Increase Asthma Risk

Fish in children's diet cuts eczema risk: study

Wed Sep 24, 10:01 pm ET
LONDON (Reuters) – Feeding babies as little as one portion of fish before they are nine months old may cut their risk of developing eczema, Swedish researchers said on Thursday.

Introducing fish of any type into the diet curbed the risk of contracting the skin condition by 25 percent compared with children who never ate it, Bernt Alm, a pediatrician at the University of Gothenburg in Sweden, and colleagues reported in the British Medical Journal.

"The main finding was that early introduction of fish was beneficial," Alm said in a telephone interview. "There was no link with the amount of fish or type of fish. We think it is more the timing of the introduction." Eczema is a chronic condition affecting between 10 and 15 percent of children that can cause the skin to become itchy, red, dry and cracked. It often affects those prone to allergies.The Swedish study is part of research tracking the long-term health of nearly 17,000 babies. The researchers found that genes played an important role in the development of eczema but breast-feeding and keeping a furry pet in the house had no effect.

Fish in the diet appeared to be important, but Alm said it would take further investigation to establish why. There was no extra protection from fish rich in omega-3 fatty acids, which provided other health benefits, Alm said. "It must have something to do with its influence on the developing immune system," he added.

(Reporting by Michael Kahn; Editing by Andrew Dobbie)
Copyright © 2008 Reuters Limited. All rights reserved.

Outdoor pools boost child's asthma risk: study

By Michael Kahn
Wed Sep 24, 7:07 pm ET
LONDON (Reuters) – Swimming in outdoor chlorinated pools appears to increase the odds a child will develop asthma, Belgian researchers said on Thursday. Other studies have linked chlorine and asthma but the new findings published in the European Respiratory Journal cast doubt on the idea outdoor pools are safer than indoor ones where chlorine vapors remains trapped inside an enclosed space."The more you swim, the higher the risk," said Alfred Bernard, a toxicologist at Catholic University of Louvain in Brussels, who led the study. "What is new in this study is that we looked at outdoor pools for the first time."
Asthma, which affects more than 300 million people worldwide, is the most common pediatric chronic illness. Symptoms include wheezing, shortness of breath, coughing and chest tightness.

Bernard and colleagues showed that outdoor pools are just as or more risky than indoor ones because harmful vapors remain at the pool surface and do not drift away. And because children tend to spend more time in pools they are more likely to swallow chlorinated water or ingest vapors containing chemicals that attack the cellular barriers protecting the lung from allergens, Bernard said. "We see that the risk of the outdoor pool is equal and even higher than indoor pools because children tend to spend longer in outdoor pools and they are more chlorinated," he said.

The Belgian team tested 847 students around the age of 15 for allergies and asthma and asked their parents about exposure to asthma risks such as tobacco smoke, pets and pollution, and how much time the children had spent in chlorinated pools.
The researchers determined that the risk for the 50 percent of children predisposed to allergies and asthma was directly related to the amount of time spent in a pool. Children with the highest pool attendance -- one hour per week for 10 years -- were five times more likely to be asthmatic than young people who had never swum in a pool, the study found.
"Young children are more exposed because they take more water into their airways and their lungs are still developing," Bernard said in a telephone interview.
(Reporting by Michael Kahn; Editing by Janet Lawrence)
Copyright © 2008 Reuters Limited.

Very interesting articles. Inhaling chlorine must be bad, period, end of story. It does kill stuff, which is why we use it, so it must be very taxing on the respiratory system, perhaps killing the lung "coating" surfactant, or somehow altering normal function of those exterior cells. I would've guessed only indoor pools did this.


JJordan said...

Not everyone is impressed with the quality of the Belgian scientists' work.

I do some work with the American Chemistry Council, and attendant to that work I just read a pretty thorough article at Medical News Today by Dr. Peggy Geimer, who teaches medicine at both Columbia and Yale. She points out that this study actually found no correlation between asthma and indoor pools. So what's up with outdoor pools, with this particular outlying study? Hmm. She also points out that untreated and improperly treated pools are often loaded with pathogens-- unmentionable stuff from all over people's bodies is floating around in microbial quanitities-- and waterborne diseases are on the rise.

Certainly, there's risk in everything-- and chlorine is very powerful chemical, which is why it's so good at neutralizing pathogens. You just have to be certain to use it properly.

And across the board, study after study indicates that the benefits of treated water seriously outweigh the risks-- and the risks of untreated water are nothing to take lightly.

Something to think about. Check it out:

Ashley loves Leo said...

Thanks for your info!