#CRCFREE: Using Social Media to Reduce Colorectal Cancer Risk in Rural Adults.

Objectives: In this study, we pilot-tested #CRCFree, a Facebook-based intervention aimed at reducing colorectal cancer (CRC) risk in rural Appalachian adults at risk for CRC. Methods: Participants were 56 rural Appalachian adults aged >= 50 years. Daily #CRCFree Facebook posts addressed diet, physical activity, and CRC screening. Participants' sociodemographics, diet, body mass index, physical activity, and CRC screening status were measured pre- and post- intervention. The Healthy Eating Index (HEI) and the Dietary Inflammatory Index (DII) assessed dietary patterns. Facebook engagement was measured throughout the intervention. A post-intervention focus group evaluated intervention acceptability. Results: Participants were Caucasian, aged 58 +/- 6 years, and predominantly female (66%). Post-intervention, HEI scores increased (49.9 +/- 9.9 vs 58.6 +/- 12.1, p = <.001), and DII scores decreased from baseline (2.8 +/- 1.1 vs 1.6 +/- 1.7, p = .002).There was no change in physical activity, BMI, or CRC screening status. Focus group participants found the intervention to be educational and motivating. Conclusions: These results provide preliminary evidence to support using Facebook to address CRC risk in this population. Participants were responsive to this intervention, and Facebook is a novel and accessible modality for health promotion.