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  1. Candy Lee
  1. Correspondence to Candy Lee, Abertawe Bro Morgannwg University Health Board, Singleton Hospital, Sketty Lane, Swansea SA2 8QA, UK; candy.lee{at}

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Overweight children have a higher risk of asthma

Overweight or obese children are more likely to develop asthma compared with children of a healthy weight, according to this large population-based longitudinal study (American Journal of Epidemiology Published Online First: 6 Aug 2013, doi:10.1093/aje/kwt093). Results from the analysis of health records from 623 358 children (aged 6–19 years) showed that compared to children of healthy weight, the adjusted rate of asthma for overweight, moderately obese and extremely obese children were 1.16, 1.23 and 1.37, respectively. Also noted was the tendency for increase in the severity of asthma for moderately and extremely obese asthmatic children.

High dose N-acetylcysteine and COPD

In this double-blind randomised control trial, investigators assigned 120 patients with stable mild or moderate COPD to receive either 1 year of N-acetylcysteine (NAC) 600 mg twice daily or placebo (Chest 2013;144:106–18). At 1 year, patients receiving NAC had significant improvement in …

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