Daughters, dUdes, Mothers and othErs Fighting Cancer Together

The specific aims of this protocol are to: 1) determine whether dyads (comprised of an overweight / obese cancer survivor and an overweight / obese buddy of his or her choosing) lose significantly more weight (kg) at 6-months when assigned to the eHealth intervention compared to a wait-listed control; 2) explore between-arm differences in score changes between baseline and 6-month follow-up for other key outcomes including measures of adiposity (e.g., waist circumference \[WC\] and body mass index \[BMI\]), blood pressure, diet quality, physical activity, health-related Quality of Life (QoL), physical functioning and performance; 3) Assess the impact of the intervention on select biomarkers associated with cancer risk and progression, e.g., tumor TNFα, insulin and IGF-1; and, 4) identify predictor variables associated with program efficacy, e.g., social support, self-efficacy, risk for depression, and dyad partner (spouse, relative, friend/neighbor). Cancer survivors and their selected "buddies" who are interested in participating will be directed to a website that describes this study in detail. If interested, they will be asked to complete an online screener requiring information on race/ethnicity, gender, state of residence and eligibility criteria. Once interested participants are assessed for eligibility, consented and enrolled, they will be asked to complete online questionnaires that assess physical activity, dietary intake, health-related quality of life, risk for depression, self-efficacy, social support and barriers to diet resources. Finally, anthropometric measures, blood pressure, physical performance and circulating biomarkers will be collected in participants' homes by visiting study staff (whom the project manager will deploy after checking for a mutually convenient time for the 2-person dyad.