1528 Background: Complementary and alternative medicines (CAMs) are frequently utilized by cancer patients, but there are few data regarding use in well individuals with high cancer risk. Methods: Data on CAM use in females with a strong family history of breast cancer (BC) but no personal cancer history was obtained using a questionnaire mailed 6 years after their enrolment in the kConFab BC family cohort study. CAM use was analysed for demographic and psychosocial predictors of use using multivariate logistic regression. Results: Of the 1,373 women, 1,001 (73%) responded; 109 were excluded as they were not at high cancer risk (spouses or mutation negative), leaving 892 high-risk women. 55% (n=489) used CAM, but only 6% (n=53) used CAM specifically to prevent cancer. The three most common CAMs were vitamins/supplements (n=266, 54%), low fat diet (n=151, 31%) and massage (n=138, 28%). The CAM most frequently used specifically to prevent cancer was green tea (n=19, 26% of all CAM use to prevent cancer), followed by soy rich diet (n=12, 16%) and vitamins/supplements (n=12, 16%). CAM use was independently associated with higher education level (OR 2.56, 95%CI 1.84- 3.56, p<0.001), greater physical activity (OR 1.05 per hour of physical activity/week, 95%CI 1.002–1.10, p=0.04) and lower perceived BC risk (OR 0.99 per percentage of perceived risk, 95%CI 0.98–0.99, p<0.001). Conclusions: Only a small number of women at high risk for BC used CAM specifically to prevent cancer. This suggests that women do not consider CAM as a cancer risk management strategy. The associations between CAM use and higher education and greater physical activity are consistent with the limited literature, but that with lower perceived cancer risk is novel. Clinicians should routinely take a CAM history, given a potential for interactions with chemoprevention medications. No significant financial relationships to disclose.
Read full abstract