1. Being overweight in childhood, puberty, or early adulthood: Changing asthma risk in the next generation?
- Author
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Johannessen, A, Lonnebotn, M, Calciano, L, Benediktsdottir, B, Bertelsen, RJ, Braback, L, Dharmage, S, Franklin, KA, Gislason, T, Holm, M, Janson, C, Jarvis, D, Jogi, R, Kim, J-L, Kirkeleit, J, Lodge, C, Malinovschi, A, Martinez-Moratalla, J, Nilsen, RM, Pereira-Vega, A, Real, FG, Schlunssen, V, Accordini, S, Svanes, C, Johannessen, A, Lonnebotn, M, Calciano, L, Benediktsdottir, B, Bertelsen, RJ, Braback, L, Dharmage, S, Franklin, KA, Gislason, T, Holm, M, Janson, C, Jarvis, D, Jogi, R, Kim, J-L, Kirkeleit, J, Lodge, C, Malinovschi, A, Martinez-Moratalla, J, Nilsen, RM, Pereira-Vega, A, Real, FG, Schlunssen, V, Accordini, S, and Svanes, C
- Abstract
BACKGROUND: Overweight status and asthma have increased during the last decades. Being overweight is a known risk factor for asthma, but it is not known whether it might also increase asthma risk in the next generation. OBJECTIVE: We aimed to examine whether parents being overweight in childhood, adolescence, or adulthood is associated with asthma in their offspring. METHODS: We included 6347 adult offspring (age, 18-52 years) investigated in the Respiratory Health in Northern Europe, Spain and Australia (RHINESSA) multigeneration study of 2044 fathers and 2549 mothers (age, 37-66 years) investigated in the European Community Respiratory Health Survey (ECRHS) study. Associations of parental overweight status at age 8 years, puberty, and age 30 years with offspring's childhood overweight status (potential mediator) and offspring's asthma with or without nasal allergies (outcomes) was analyzed by using 2-level logistic regression and 2-level multinomial logistic regression, respectively. Counterfactual-based mediation analysis was performed to establish whether observed associations were direct or indirect effects mediated through the offspring's own overweight status. RESULTS: We found statistically significant associations between both fathers' and mothers' childhood overweight status and offspring's childhood overweight status (odds ratio, 2.23 [95% CI, 1.45-3.42] and 2.45 [95% CI, 1.86-3.22], respectively). We also found a statistically significant effect of fathers' onset of being overweight in puberty on offspring's asthma without nasal allergies (relative risk ratio, 2.31 [95% CI, 1.23-4.33]). This effect was direct and not mediated through the offspring's own overweight status. No effect on offspring's asthma with nasal allergies was found. CONCLUSION: Our findings suggest that metabolic factors long before conception can increase asthma risk and that male puberty is a time window of particular importance for offspring's health.
- Published
- 2020