Body fat distribution and breast cancer risk: findings from the Nigerian breast cancer study.
Cancer Causes Control
; 23(4): 565-74, 2012 Apr.
Article
en En
| MEDLINE
| ID: mdl-22367701
ABSTRACT
PURPOSE:
The relationship between overall obesity and breast cancer risk has been well recognized, but the role of central obesity in breast cancer development is uncertain.METHODS:
Between 1998 and 2009, 1,233 invasive breast cancer cases and 1,101 community controls were recruited into the Nigerian Breast Cancer Study at Ibadan, Nigeria. Logistic regressions were used to calculate multivariate odds ratio (OR) and 95% confidence intervals (CI), adjusting for age, body mass index (BMI), and other known risk factors for breast cancer.RESULTS:
The OR for the highest quartile group of waist circumference relative to the lowest was 2.39 (95% CI, 1.59-3.60; P-trend < 0.001). Comparing women with waist/hip ratio (WHR) in the lowest quartile group, the OR for women in the highest quartile category was 2.15 (95% CI, 1.61-2.85; P-trend < 0.001). An inverse association was observed between hip circumference and breast cancer, with an OR of 0.36 for the highest quartile (95% CI, 0.24-0.55; P-trend < 0.001). The effects of these three measures existed in both pre- and postmenopausal women. Of note, we found a significant interaction between WHR and BMI (P-interaction = 0.016) the OR comparing the highest to the lowest WHR quartile was 2.81 (95% CI, 1.90-4.16) for women with BMI < 25 kg/m2 and 1.70 (95% CI, 1.11-2.61) for women with BMI ≥ 25 kg/m2.CONCLUSIONS:
These results suggest that central adiposity, measured by waist circumference and waist/hip ratio, was an important risk factor for breast cancer in Nigerian women, and the effect of central adiposity was strong in normal-weight women.
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Neoplasias de la Mama
/
Relación Cintura-Cadera
/
Distribución de la Grasa Corporal
Tipo de estudio:
Diagnostic_studies
/
Etiology_studies
/
Risk_factors_studies
Límite:
Adult
/
Female
/
Humans
/
Middle aged
País/Región como asunto:
Africa
Idioma:
En
Revista:
Cancer Causes Control
Asunto de la revista:
EPIDEMIOLOGIA
/
NEOPLASIAS
Año:
2012
Tipo del documento:
Article
País de afiliación:
Nigeria