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STUDY: Study concludes special covers ‘not worth the price’
JOURNAL: New England Journal of Medicine
AUTHORS: Thomas Platts-Mills
ABSTRACT: Bedding covers designed to keep dust mites out of the air don’t reduce hay fever and asthma symptoms.
COMMENTARY: The covers which, sell for $50 to $100 in the United States, screen out mites and their byproducts while allowing air to flow. They are sold as one way to help sensitive individuals reduce the risk of allergic reactions.
In a one-year test of 1,122 adults with asthma, British doctors found that volunteers who used the bedding had no more real improvement in their symptoms than people who used standard bedding.
The second, smaller study, led by researchers in the Netherlands, found that hay fever symptoms did not improve among the 114 people who used mite-proof bedding covers, compared to the 118 who did not.