mattress covers may not help with dust mite allergies - which air purifier to buy

NEW YORK (Reuters Health)-
According to 24 clinical trialsS.
The researchers found that expensive bed pads are no different in reducing dust worm allergies or symptoms.
As many as 40% of the world's population is allergic, and dust worms are considered one of the most common causes.
Despite the lack of evidence, doctors often tell patients to buy special mattresses and pillowcases, which they alleviate, the authors say.
"Based on this analysis that combines many different research data, there doesn't seem to be any benefit in using dust sets to prevent allergic diseases or prevent symptoms, lead author Whitney aloyaf told Reuters.
Arroyave, a researcher at the School of Public Health and Tropical Medicine at Dulan University in New Orleans, and her colleagues combined the results of the trials of 24 reduction methods, the team found that, the use of bedding covers has a great impact on reducing exposure to house mites-
About 20%-
However, this reduction has no statistically significant effect on symptoms such as house dust allergy or asthma, asthma, runny nose or dermatitis.
The results were published in the yearbook of Allergy, Asthma and Immunology.
Arroyave said it is not clear at the moment why dust covers appear to have no effect on relieving allergies, but they may not have reduced enough mites levels to improve the symptoms, or, beds may not be the main source of exposure to dust mites.
"Or maybe it's not dust at all --
"Maybe they didn't cause the problem," she said . ".
Arroyave said that the cost of the mite coverage is about $100, which is a burden, especially for a very low populationincome people.
"It's expensive to let them pay for it," she said . ".
She added that other researchers have done more research, not only on dust-proof clothes, but also on various dust-proof measures.
Arroyave said: "They didn't find any results either, so I guess we just said, you know, look at this one again --
Maybe we need to reconsider these suggestions. ” Dr.
Samuel Fredland, an allergic scientist at Rainbow baby and children's hospital in Cleveland, Ohio, and the School of Medicine at the University of Kissimmee, said he did not intend to give up recommending dust covers.
"It is important to understand that avoidance measures are very important for allergy control, and we treat allergies by avoiding allergies, medication and immunotherapy or allergy injections, fredland, who was not involved in the new study, said.
"This article helps to illustrate that a single measure to control allergies is not always effective --
We have to take a variety of measures . "
"So, for me, the message to take home is that mites covers are still very important, but they should be part of a comprehensive treatment plan," he said . ".
The researchers tried to modify one thing at a time to show cause-and-effect, but in real life, the allergy scientists put forward a number of suggestions needed to solve the patient's symptoms, Fredland said.
"If you do something like a dust jacket, but you are still exposed to dust from other sources at home or at work, or if you have other allergies like pets or pollen of course, A single measure like a dust cover is ineffective, "he said.
He said he did not want people to think the dust cover was unimportant.
"I think the key is that we need to make multiple suggestions to alleviate multiple allergies in our patients," he said . ".
"Dust covers are very important, but they must be part of a comprehensive treatment plan.
"It's important to see an allergy specialist to determine what your allergy is, so an allergy specialist can develop a treatment plan to deal with all your allergies," added Fredland. SOURCE: bit.
Ly/1dtFL1U Allergy, Asthma and Immunology Yearbook, online, January 30, 2014.