Adverse childhood experiences encompass a range of potentially traumatic events occurring before age 18, including abuse (physical, emotional, sexual), neglect (physical, emotional), and household dysfunction (parental substance abuse, mental illness, incarceration, domestic violence, divorce). Since the landmark ACE Study published in the 1990s, extensive research has documented the long-term health consequences of childhood adversity, including increased risk of cardiovascular disease, diabetes, depression, and premature mortality.
The biological pathways linking ACEs to adult disease are multifaceted and include chronic stress activation, dysregulation of the hypothalamic-pituitary-adrenal axis, systemic inflammation, epigenetic modifications, and adoption of unhealthy behaviors. These pathways interact over the life course, creating cumulative risk that manifests as increased disease burden in mid and later life.
China has undergone rapid social and economic transformation in recent decades, with profound implications for family structure and child-rearing practices. Understanding the health impacts of ACEs in the Chinese context is important given cultural differences in family dynamics, help-seeking behaviors, and disease patterns. However, relatively few studies have examined ACEs and their health consequences in Chinese populations.
This study investigated the joint effects of ACEs and heavy drinking on cardiometabolic multimorbidity in middle-aged and older Chinese adults. Cardiometabolic multimorbidity, defined as the co-occurrence of two or more cardiometabolic conditions (such as hypertension, diabetes, coronary heart disease, and stroke), represents a growing health challenge associated with substantial disability and healthcare costs.
The study drew on data from a large prospective cohort of Chinese adults aged 45 and older. ACEs were assessed retrospectively using a validated questionnaire covering multiple domains of childhood adversity. Alcohol consumption was assessed through standardized questions about drinking frequency and quantity, with heavy drinking defined according to established guidelines. Cardiometabolic conditions were ascertained through medical history, medication use, and biological measurements.
Key findings demonstrated that both ACEs and heavy drinking were independently associated with increased risk of cardiometabolic multimorbidity. More importantly, a significant interaction was observed, whereby heavy drinking amplified the adverse effects of ACEs. Among individuals with high ACE exposure, those who engaged in heavy drinking had substantially higher risk compared to those who did not drink heavily.
Several mechanisms may explain this interaction. First, alcohol use may represent a coping mechanism for trauma-related distress, creating a pathway from ACEs to unhealthy behavior. Second, alcohol has direct physiological effects that exacerbate cardiometabolic risk, including elevation of blood pressure, dysregulation of glucose metabolism, and promotion of inflammation. Third, heavy drinking may compound the stress system dysregulation associated with ACEs, accelerating disease processes.
The public health implications of these findings are significant. Prevention of ACEs through family support programs, child welfare policies, and community interventions could reduce the burden of cardiometabolic disease in future generations. For adults with ACE exposure, screening and intervention for heavy drinking could mitigate some of the associated health risks. Integrated approaches addressing both trauma and substance use may be particularly effective.
Several limitations should be noted. ACEs were assessed retrospectively, which may be subject to recall bias. The observational design precludes causal inference. Residual confounding by unmeasured factors cannot be excluded. The findings may not generalize to younger populations or other cultural contexts.
Future research directions include investigation of mechanisms linking ACEs, alcohol use, and cardiometabolic disease; evaluation of interventions to reduce ACE-related health risks; and examination of protective factors that may buffer against the adverse effects of childhood adversity.
DOI:10.1007/s11684-026-1216-0