This study examined whether parental emotional support around emerging adulthood influenced well-being in midlife. We applied latent growth curve (LGC) models on 337 Baby Boomers who were in their late teens to early 20s when they entered the Longitudinal Study of Generations (LSOG) in 1971. There was a small but significant decline in self-rated health and positive emotions through 2005, but not depressive symptoms. Greater support from fathers in 1971 was associated with better self-rated health, less depression, and a slower decline in self-rated health across midlife. Greater support from mothers was associated with more positive emotions. These associations did not significantly differ among sons and daughters. Findings are discussed in the context of cumulative advantage/disadvantage and life-stage specific challenges to highlight the importance of parental emotional support during life transitions.