Allergy
Tuesday, November 22nd, 2011The use of pillows and bedding made with feathers has been long considered as a potential source of allergens. Therefore it is common to recommend to people, especially those suffering from allergies, the non-use of bedding made with feathers, even when the evidence against it is not very important. Recent studies have shown that cross-bedding made with synthetic compounds is associated with various respiratory effects at. In addition, synthetic pillows contain higher concentrations of different types of allergens compared with those made with feathers. Given these conflicting results would be weak evidence for recommending the use of bedding made with synthetic materials. In a Scandinavian study prospectively evaluated the relationship between the use of bedding made with feathers and frequency of respiratory effects through the monitoring of children up to age 4 years.
Methods
We included children born in Oslo two major clinics over a period of 15 months, a total of 3 754 children. The study included follow-up at 6, 12, 18 and 24 months, and then at 4 years as part of a cross-sectional population-based 4-year-old Oslo in 1996. The proportion of participants at follow-up was 81% at 2 years and 67% at 4 years. The primary effects were to evaluate bronchial obstruction during the first 2 years and current asthma and allergic rhinitis at 4 years. Bronchial obstruction was defined as the presence of 2 or more episodes with symptoms and signs of obstruction or one episode lasting more than 1 month in the first 2 years of life. One of these episodes should have been diagnosed by a physician, with at least three of the following signs and symptoms: wheezing, respiratory depression, stridor, and tachypnea forced expiration. (more…)
It is believed that about 5% of children have or have had an allergy caused by some food.