Journal of Cancer Survivorship

, Volume 8, Issue 3, pp 410–418

Weight gain prior to entry into a weight-loss intervention study among overweight and obese breast cancer survivors

  • Rebecca L. Sedjo
  • Tim Byers
  • Patricia A. Ganz
  • Graham A. Colditz
  • Wendy Demark-Wahnefried
  • Kathleen Y. Wolin
  • Maria Azrad
  • Cheryl L. Rock

DOI: 10.1007/s11764-014-0351-9

Cite this article as:
Sedjo, R.L., Byers, T., Ganz, P.A. et al. J Cancer Surviv (2014) 8: 410. doi:10.1007/s11764-014-0351-9



Changes in cancer therapy, in addition to changes in obesity prevalence, suggest the need for a current assessment of weight gain patterns following breast cancer diagnosis. The aim of this study was to evaluate factors associated with weight gain among breast cancer survivors prior to enrolling into a behavioral weight loss intervention.


Anthropometric measures and data on weight-related factors were collected at baseline on 665 breast cancer survivors. Postdiagnosis weight gain was determined between entry into the trial and previous diagnosis up to 5 years. Multivariate logistic regression analyses were used to evaluate the association between weight gain and influencing factors.


The mean weight gain was 4.5 % body weight (standard deviation = 10.6); 44 % of women experienced ≥5 % body weight gain. The risk of weight gain was inversely associated with age (adjusted odds ratio (ORadj) = 0.97, 95 % confidence interval (95 % CI) 0.95–0.99), Hispanic ethnicity (ORadj = 0.30, 95 % CI 0.13–0.68), and overweight (ORadj = 0.11, 95 % CI 0.05–0.23) or obese (ORadj = 0.03, 95 % CI 0.02–0.07) status at diagnosis and positively associated with time elapsed since diagnosis (ORadj = 1.19/year, 95 % CI 1.04–1.36). Women prescribed aromatase inhibitors were 46 % less likely to gain weight compared to women prescribed selective estrogen-receptor modulators (ORadj = 0.54, 95 % CI 0.31–0.93). The risk of weight gain was positively associated with smoking at diagnosis (ORadj = 2.69, 95 % CI 1.12–6.49) although this was attributable to women who subsequently quit smoking.


Postdiagnosis weight gain is common and complex and influenced by age, ethnicity, weight, smoking status, time elapsed since diagnosis, and endocrine-modulating therapy.

Implications for cancer survivors

Weight gain continues to be a concern following a diagnosis of breast cancer. Factors influencing this weight gain include age, ethnicity, weight, smoking status, time elapsed since diagnosis, and endocrine-modulating therapy. Effective weight management strategies are needed for this population of women.


Breast cancer survivorsWeight gainWomen

Copyright information

© Springer Science+Business Media New York 2014

Authors and Affiliations

  • Rebecca L. Sedjo
    • 1
  • Tim Byers
    • 2
  • Patricia A. Ganz
    • 3
  • Graham A. Colditz
    • 4
  • Wendy Demark-Wahnefried
    • 5
  • Kathleen Y. Wolin
    • 6
  • Maria Azrad
    • 7
  • Cheryl L. Rock
    • 8
  1. 1.Department of Community and Behavioral Health, Colorado School of Public HealthUniversity of Colorado DenverAuroraUSA
  2. 2.Department of Epidemiology, Colorado School of Public HealthUniversity of Colorado DenverAuroraUSA
  3. 3.Jonsson Comprehensive Cancer CenterUniversity of CaliforniaLos AngelesUSA
  4. 4.Washington University School of MedicineSaint LouisUSA
  5. 5.University of Alabama Comprehensive Cancer CenterUniversity of Alabama at BirminghamBirminghamUSA
  6. 6.Department of Public Health SciencesLoyola University Chicago Stritch School of MedicineMaywoodUSA
  7. 7.Department of Nutrition SciencesUniversity of Alabama at BirminghamBirminghamUSA
  8. 8.Department of Family and Preventive Medicine, School of MedicineUniversity of California San DiegoLa JollaUSA