“…As evidence continues to support the powerful impacts family relationships have on health, including adult children's influences on parents' well-being (Umberson, Pudrovska, & Reczek, 2010), the importance of sibling relationships in caregiving (Namkung, Greenberg, & Mailick, 2016), and the impact of grandparents providing childcare without support (Lee, Clarkson-Hendrix, & Lee, 2016), it becomes increasingly evident that studying nonromantic relationships in adult health research is critical (Thomas, Liu, & Umberson, 2017). As evidence continues to support the powerful impacts family relationships have on health, including adult children's influences on parents' well-being (Umberson, Pudrovska, & Reczek, 2010), the importance of sibling relationships in caregiving (Namkung, Greenberg, & Mailick, 2016), and the impact of grandparents providing childcare without support (Lee, Clarkson-Hendrix, & Lee, 2016), it becomes increasingly evident that studying nonromantic relationships in adult health research is critical (Thomas, Liu, & Umberson, 2017).…”