Twins may protect against breast cancerBMJ 1997; 314 doi: https://doi.org/10.1136/bmj.314.7084.845a (Published 22 March 1997) Cite this as: BMJ 1997;314:845
- Jessica Westall
- Clegg scholar, BMJ
Women who give birth to twins may be protected against breast cancer, says a study from the Imperial Cancer Research Fund.
The population based case-control study shows that their risk was reduced by almost a third compared with mothers who had had only one baby. Data on 47000 Swedish women under 50 who were not registered …