Weight gain after 35 years of age is associated with increased breast cancer risk: findings from a large prospective cohort study.

Furthermore, although there may be some indications of trends or associations between weight gain in certain age groups and breast cancer risk, some of these associations were marginally significant and some were not consistently significant across different periods and menopausal statuses.

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Weight gain after 50 years of age The current study, which included 37,909 women (333,571 person-years) with 364 recorded cases of breast cancer, showed a positive trend association between weight gain in the peri- and post-menopausal age and postmenopausal breast cancer ( P trend = 0.04; Figure 2 and Table S2 ).

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