Intended for healthcare professionals


Use of asthma drugs is less among women pregnant with boys rather than girls

BMJ 1999; 318 doi: (Published 10 April 1999) Cite this as: BMJ 1999;318:1011
  1. L Dodds, Epidemiologist.,
  2. B A Armson, Obstetrician.,
  3. S Alexander, Epidemiologist. (
  1. Reproductive Care Programme, 5980 University Avenue, Halifax, Nova Scotia, Canada B3H 4N1
  2. Department of Obstetrics and Gynaecology, Dalhousie University, Halifax, Nova Scotia, Canada B3H 4N1
  3. Newfoundland and Labrador Provincial Perinatal Programme, St John's, Newfoundland, Canada A1A 1R8

    EDITOR—Beecroft et al reported an intriguing association between the sex of the fetus and symptoms of asthma during pregnancy.1 They speculated that women pregnant with boys have improved asthma symptoms during pregnancy, possibly because of androgen production by male fetuses. We recently reported …

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