Divorce, nowadays an increasingly more prevalent life event in Iran, can create poor general health among Iranian women, possibly due to bigger challenges for health-related behaviors. The aim was to explore challenges to achieve health-related behaviors as experienced by divorced Iranian women acting as household-heads. An inductive exploratory design based on qualitative content analysis was utilized. Twenty strategically selected divorced women acting as household-heads in Tehran were interviewed between September 2019 and January 2020. The divorced women experienced individual-centered and social and environmental-centered challenges concerning their health-related behaviors. Lack of competence, lack of personal control, and lack of emotional support were described as individual-centered barriers. Lack of community-based support, lack of financial support, and lack of labor market support were described as social and environmental challenges to health-related behaviors. A wide range of individual, social, and environmental-centered factors hindered divorced women acting as household-heads to engage in health-related behaviors. Therefore, person-centered interventions are necessary alongside efforts to develop appropriate policies and amend protection laws to increase the welfare and health of divorced women acting as household-heads.