Contact acculturation and treatment behaviors emphasize an individual's understanding of their illness experience as a key factor in health and well-being. The study examines treatment behaviors (e.g., treatment-seeking and treatment decision-making) and health outcomes among women aged 21 to 65 from the culturally changing Kharwar Adivasi community, as well as their contact acculturation to health issues. The study was conducted in the Naugarh region of Chandauli district, Uttar Pradesh, and the sample comprised 225 women participants. The study focuses on health issues, such as diarrhea, jaundice, malaria, pneumonia, and eczema, impacting these women's daily activities. Measures of contact acculturation, treatment-seeking behavior (e.g., clinical care & folk healing), treatment decision-making (e.g., decisional-conflict & defensive avoidance), and health outcomes (e.g., pain, hope, & severity) were administered to the women. Analysis revealed that women who exhibited greater clinical care, lesser decisional conflict, and defensive avoidance treatment decision-making scored higher on the contact acculturation measure. In contrast, those who sought more folk healing, exhibited greater decisional conflict and defensive avoidance treatment decision-making, scored lower on the contact acculturation measure. High-contact acculturation was linked to lower pain and severity and greater hope for positive health outcomes. The findings are discussed within the sociocultural context of the Kharwar Adivasi Community, highlighting their implications for developing psychoeducational interventions tailored to Kharwar women's health-related behaviors.