Epidemiology

Breast Cancer Research and Treatment

, Volume 96, Issue 3, pp 227-232

Diet quality is directly associated with quality of life in breast cancer survivors

  • Sharon J WayneAffiliated withDivision of Epidemiology and Preventive Medicine, Department of Internal Medicine University of New Mexico School of Medicine Email author 
  • , Kathy BaumgartnerAffiliated withCancer Research and Treatment Center, Department of Internal Medicine University of New Mexico School of Medicine
  • , Richard N BaumgartnerAffiliated withDivision of Epidemiology and Preventive Medicine, Department of Internal Medicine University of New Mexico School of Medicine
  • , Leslie BernsteinAffiliated withDepartment of Preventive Medicine and USC/Norris Comprehensive Cancer Center, Keck School of Medicine of the University of Southern California
  • , Deborah J BowenAffiliated withFred Hutchinson Cancer Research Center
  • , Rachel Ballard-BarbashAffiliated withApplied Research Program, National Cancer Institute

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Summary

Purpose

To determine whether there is a direct relationship between diet quality and quality of life in breast cancer survivors.

Methods

Subjects (n = 714) were members of the Health, Eating, Activity, and Lifestyle study, a study of breast cancer prognosis conducted in three areas of the western United States. Approximately 2 years after entry to this study, diet data were collecting using food frequency questionnaires. These data were used to classify diet quality using the Diet Quality Index. Approximately 10 months later, data on quality of life were gathered using the Medical Outcomes Study 36-Item short form health survey.

Results

After controlling for age, education, race/ethnicity, body mass index, stage of disease, and time from diagnosis to quality of life measurement, women with excellent diet quality had significantly better scores than women with poor diet quality for overall mental health functioning and for 3 of 4 mental health subscale scores and 2 of 4 physical health subscale scores.

Conclusion

Post-diagnosis diet quality is directly associated with subsequent mental and physical functioning in breast cancer survivors. This association is stronger for mental functioning than for physical functioning. The association remains strong after control for potential confounding variables.

Key words:

breast cancer cancer survival diet quality quality of life