Purpose Research on the impact of family cancer caregiving is primarily dyadic in focus. How caregiving affects the larger family system is less understood, yet knowing this is vital to developing supportive resources for caregivers, patients, and their families. To better understand how blood cancer caregiving impacts the family system, we explored the experiences of adult child caregivers of diagnosed parents and parent caregivers of diagnosed children. Methods We conducted semi-structured interviews with 39 midlife parent and adult child caregivers of patients with leukemia or lymphoma. Using a family systems theory lens, we conducted a thematic analysis using the constant comparative method to identify how caregiving impacts the larger family system. Results Caregivers ranged from age 30 to 64 (M= 43). They described four ways that caregiving impacted themselves and the larger family system: (1)disruption of home life, (2)emotional (dis)connection, (3)juggling competing roles, and (4)developing resiliency and intimacy. Perspectives within each category differed based on their relational role to the patient or in the broader family. Conclusions Themes identify ways to provide support to both caregiver types. Support care resources could help families navigate gains and losses impacting the family system after a blood cancer diagnosis. Both caregiver types described experiencing (and/or their family experiencing) a loss in relational connection, feeling alone, and members distancing themselves. Both caregiver types also described gains in family functioning, like strengthened bonds and togetherness. Findings validate the need for family-centered support with key areas to address for healthy family functioning.