Analyzing 62-year-olds from Britain's 1958 birth cohort, researchers found that social class origins cast a shadow over memory function five decades later. Men from professional families showed 13 percentage points higher accuracy in recalling childhood household details compared to those from manual working backgrounds, even after accounting for educational attainment and career mobility. This persistent cognitive advantage emerged more clearly for long-term episodic memory than standard memory tests. The findings challenge assumptions about social mobility as an equalizer, suggesting that early-life socioeconomic conditions create lasting neurological imprints that education and career advancement cannot fully overcome. This aligns with emerging research on how childhood stress, nutrition, and stimulation shape brain architecture with lifelong consequences. For aging populations, these results highlight how social inequalities compound over time, potentially affecting decision-making capacity in retirement and independent living abilities. However, this preprint awaits peer review, and the findings may change through the review process. The research represents an incremental but important addition to our understanding of how social determinants create persistent health disparities, extending beyond traditional physical health outcomes to cognitive function.