The concept of allostatic load (AL) refers to the idea of a global physiological ‘wear and tear’ resulting from the adaptation
to the environment through the stress response systems over the life span. The link between socioeconomic position (SEP)
and mortality has now been established, and there is evidence that AL may capture the link between SEP and mortality. In
order to quantitatively assess the role of AL on mortality, we use data from the 1958 British birth cohort including eleven
year mortality in 8,113 adults. Specifically, we interrogate the hypothesis of a cumulative biological risk (allostatic load)
reflecting 4 physiological systems potentially predicting future risk of death (N = 132). AL was defined using 14
biomarkers assayed in blood from a biosample collected at 44 years of age. Cox proportional hazard regression analysis
revealed that higher allostatic load at 44 years old was a significant predictor of mortality 11 years later [HR = 3.56 (2.3 to
5.53)]. We found that this relationship was not solely related to early-life SEP, adverse childhood experiences and young
adulthood health status, behaviours and SEP [HR = 2.57 (1.59 to 4.15)]. Regarding the ability of each physiological
system and biomarkers to predict future death, our results suggest that the cumulative measure was advantageous compared
to evaluating each physiological system sub-score and biomarker separately. Our findings add some evidence of a biological
embodiment in response to stress which ultimately affects mortality.