Adverse childhood experiences and the development of multimorbidity across adulthood-a national 70-year cohort study

Early life stress in relation with risk of overweight, depression, and their comorbidity across adulthood: findings from a British birth cohort

BACKGROUND

Multimorbidity, known as the co-occurrence of at least two chronic conditions, has become of increasing concern in the current context of ageing populations, though it affects all ages. Early life risk factors of multimorbidity include adverse childhood experiences (ACEs), particularly associated with psychological conditions and weight problems. Few studies have considered related mechanisms and focus on old age participants. We are interested in estimating, from young adulthood, the risk of overweight-depression comorbidity related to ACEs while adjusting for early life confounders and intermediate variables.

METHODS

We used data from the 1958 National Child Development Study, a prospective birth cohort study (N = 18 558). A four-category outcome (no condition, overweight only, depression only and, overweight-depression comorbidity) was constructed at 23, 33, and 42 years. Multinomial logistic regression models adjusting for intermediate variables co-occurring with this outcome were created. ACEs and sex interaction on comorbidity risk was tested.

RESULTS

In our study sample (N = 7762), we found that ACEs were associated with overweight-depression comorbidity risk throughout adulthood (RRR [95% CI] at 23y = 3.80 [2.10-6.88]) though less overtime. Comorbidity risk was larger than risk of separate conditions. Intermediate variables explained part of the association. After full-adjustment, an association remained (RRR [95% CI] at 23y = 2.00 [1.08-3.72]). Comorbidity risk related to ACEs differed by sex at 42.

CONCLUSION

Our study provides evidence on the link and potential mechanisms between ACEs and the co-occurrence of mental and physical diseases throughout the life-course. We suggest addressing ACEs in intervention strategies and public policies to go beyond single disease prevention.

Adverse childhood experiences and trajectories of multimorbidity in individuals aged over 50: Evidence from the English Longitudinal Study of Ageing

BACKGROUND

Adverse childhood experiences (ACE) are important for chronic diseases yet their association with multimorbidity remains understudied. Few studies consider the complexity of multimorbidity or observe multimorbidity development over time.

OBJECTIVE

We investigated whether ACE were associated with multimorbidity at baseline and over a 12-year follow-up period.

PARTICIPANTS AND SETTING

5326 participants aged over 50 were obtained from the English Longitudinal Study of Ageing (ELSA).

METHODS

An ACE summary score was derived using eight ACE items measuring abuse, social care, and household dysfunction. From repeated measurements of 29 chronic conditions over a 12-year period (2008-2019) we derived two multimorbidity measures: number of chronic diseases and number of chronic disease categories. We used multinomial logistic regression to assess associations between ACE and both measures. Mixed effects models were estimated to examine trajectories of multimorbidity by ACE over time.

RESULTS

Graded associations between ACE and multimorbidity were observed. Compared to those without ACE, participants with ≥3 ACE had three times the risk of having ≥3 chronic diseases (RRR 3.06, 95 % CI 1.85-5.05) and falling into ≥3 chronic disease categories (RRR 2·93 95 % CI 1·74-4·95). Graded associations persisted during 12-year follow-up, though differences in multimorbidity between those with ≥3 ACE and those without ACE remained constant (B 0.02, 95 % CI 0·01-0·03, and B -0·01, 95 % CI -0·02-0·00, number of chronic conditions and chronic condition categories respectively).

CONCLUSION

ACE are associated with multimorbidity risk and complexity, associations arising before the age of 50. Early intervention amongst those with ACE could attenuate this association.

Adverse childhood experiences and mental ill-health - obesity comorbidity among British adolescents - A national cohort study

Background

Mental ill-health and obesity are increasingly prevalent in childhood with both conditions likely to co-occur. Less is known about associations between adverse childhood experiences (ACEs) and mental ill-health and obesity (MH-OB) comorbidity in adolescence. The aim of this study was to examine associations between ACEs and MH-OB comorbidity in adolescents from a national cohort study.

Methods

Participants; 10,734 adolescents (males = 50.3%) from the Millennium Cohort Study with 6 ACEs (for e.g., parental MH, drug/alcohol misuse, physical punishment) collected prospectively between ages 3-11 years. MH-OB comorbidity (binary indicator) was based on objectively measured BMI (for overweight/obesity) and self-reported depression/anxiety at ages 14 and 17. Associations between: 1.total ACE scores (0, 1, 2 or ≥3) and additionally each individual ACE, and MH-OB, were analysed used logistic regression, separately at 14 and 17 years.

Results

At age 14, ACE scores were associated with higher odds for MH-OB comorbidity, with a gradient of increasing odds ratios (OR) with increasing ACEs. Individuals with 1 (OR:1.22[95%CI: 1.1-1.6]), 2 (OR:1.7[1.3-2.3]), or ≥3ACEs (OR:2[1.5-2.6]) had increased odds for MH-OB comorbidity compared to those with 0 ACEs. At age 17, associations between ACE scores and MH-OB were attenuated and observed in individuals with ≥3ACEs (OR:1.54, 1.1-2.3). Parental MH (OR:1.5, 1.2-1.9), intimate-partner violence (OR:1.2, 1.1-1.6), physical punishment (OR:1.3, 1.1-1.6), bullying (OR:2, 1.6-2.5) were associated with MH-OB comorbidity age 14. However, only parental MH (OR:1.5, 1.1-2.1) and bullying (OR:1.6, 1.2-2.1) were associated with MH-OB comorbidity at age 17.

Conclusion

ACEs are associated with increased risk of MH-OB comorbidity in between ages 14 and 17. These findings provide timely opportunity for interventions to reduce risk and are pertinent given that MH and obesity contribute significantly to global burden of disease and track across the lifecourse.