Intended for healthcare professionals

Rapid response to:

Papers Research pointers

Taking folate in pregnancy and risk of maternal breast cancer

BMJ 2004; 329 doi: (Published 09 December 2004) Cite this as: BMJ 2004;329:1375

Rapid Response:

Incidence data would be helpful

The suggestion in the article by Charles and colleagues that folate supplementation in pregnancy could increase the risk of later breast cancer is based on a total of 31 deaths. To increase the number of events the authors could have used incidence rather than mortality figures. As these data should be easily obtainable from Scottish Morbidity Records it would be helpful if the authors could report these to allow a better assessment of whether this hypothesis deserves further testing.

Competing interests: None declared

Competing interests: No competing interests

11 December 2004
Geraldine McNeill
Research Fellow
University of Aberdeen, AB25 2ZD, UK