Revista de saude publica · 2026
Age at menarche and general and abdominal obesity in older Brazilian women: ELSI-Brazil.
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Ygnatios Nair Tavares Milhem, Mambrini Juliana Vaz de Melo, Torres Juliana Lustosa, Avelar Núbia Carelli Pereira de, Danielewicz Ana Lúcia, Matos Rosana Carolina Souza Duarte de, Braga Luciana de Souza, Lima-Costa Maria Fernanda, Moreira Bruno de Souza
Аннотация
OBJECTIVE: To examine the association between age at menarche and general and/or abdominal obesity in Brazilian women aged ≥ 50 years.
METHODS: Cross-sectional study conducted with data from the second wave of the Brazilian Longitudinal Study of Aging (Estudo Longitudinal da Saúde dos Idosos Brasileiros(ELSI-Brazil, 2019-2021), in a nationally representative sample of community-dwelling individuals aged ≥ 50 years. Self-reported age at menarche was categorized as ≤ 12 years, 13-15 years, and ≥ 16 years. General obesity was defined as a body mass index of ≥ 30 kg/m2, and abdominal obesity as a waist circumference of ≥ 88 cm. The variables were combined into "general or abdominal obesity" and "general and abdominal obesity". Multinomial logistic regression adjusted for sociodemographic and lifestyle characteristics was used.
RESULTS: Among the 4,229 participants, 41.1% (95% confidence interval -95%CI 37.9-44.3) reported menarche at ≤ 12 years and 9.3% (95%CI 8.0-10.9) at ≥ 16 years. The prevalence of general or abdominal obesity was 36.6% (95%CI 33.7-39.5), while the prevalence of general and abdominal obesity was 35.0% (95%CI 32.5-37.7). After adjustments, women with age at menarche of ≤ 12 and 13-15 years had, respectively, 84% (odds ratio - OR = 1.84; 95%CI 1.14-2.98) and 64% (OR = 1.64; 95%CI 1.04-2.57) greater odds of general and abdominal obesity compared with those with menarche at ≥ 16 years. There was no significant association between age at menarche and general or abdominal obesity.
CONCLUSION: Menarche before age 16 is associated with a higher odds of general and abdominal obesity combined, but not in isolation, suggesting its potential as a relevant marker for the formulation of public policies aimed at preventing obesity in girls from school age onwards.
METHODS: Cross-sectional study conducted with data from the second wave of the Brazilian Longitudinal Study of Aging (Estudo Longitudinal da Saúde dos Idosos Brasileiros(ELSI-Brazil, 2019-2021), in a nationally representative sample of community-dwelling individuals aged ≥ 50 years. Self-reported age at menarche was categorized as ≤ 12 years, 13-15 years, and ≥ 16 years. General obesity was defined as a body mass index of ≥ 30 kg/m2, and abdominal obesity as a waist circumference of ≥ 88 cm. The variables were combined into "general or abdominal obesity" and "general and abdominal obesity". Multinomial logistic regression adjusted for sociodemographic and lifestyle characteristics was used.
RESULTS: Among the 4,229 participants, 41.1% (95% confidence interval -95%CI 37.9-44.3) reported menarche at ≤ 12 years and 9.3% (95%CI 8.0-10.9) at ≥ 16 years. The prevalence of general or abdominal obesity was 36.6% (95%CI 33.7-39.5), while the prevalence of general and abdominal obesity was 35.0% (95%CI 32.5-37.7). After adjustments, women with age at menarche of ≤ 12 and 13-15 years had, respectively, 84% (odds ratio - OR = 1.84; 95%CI 1.14-2.98) and 64% (OR = 1.64; 95%CI 1.04-2.57) greater odds of general and abdominal obesity compared with those with menarche at ≥ 16 years. There was no significant association between age at menarche and general or abdominal obesity.
CONCLUSION: Menarche before age 16 is associated with a higher odds of general and abdominal obesity combined, but not in isolation, suggesting its potential as a relevant marker for the formulation of public policies aimed at preventing obesity in girls from school age onwards.