The interaction between early-life body size and physical activity on risk of breast cancer.

@article{Oh2015TheIB,
  title={The interaction between early-life body size and physical activity on risk of breast cancer.},
  author={Hannah Oh and Caroline E Boeke and Rulla M. Tamimi and Stephanie A. Smith-Warner and Molin Wang and Walter C Willett and A Heather Eliassen},
  journal={International journal of cancer},
  year={2015},
  volume={137 3},
  pages={571-81}
}
While early-life body leanness is associated with increased breast cancer risk, early-life physical activity may protect against breast cancer. We examined whether the excess risk among lean girls is modified by their levels of prior, concurrent, or future physical activity. We conducted an analysis among 74,723 women in the Nurses' Health Study II (follow-up 1997-2011). Participants recalled their body size at ages 5, 10 and 20 years in 1989 using a 9-level pictogram (Level 1 most lean). In… CONTINUE READING