Skip Navigation LinksHome > July 2010 - Volume 17 - Issue 4 > Obesity and reproductive hormone levels in the transition to...
doi: 10.1097/gme.0b013e3181cec85d

Obesity and reproductive hormone levels in the transition to menopause

Freeman, Ellen W. PhD1,2; Sammel, Mary D. ScD3; Lin, Hui MS4; Gracia, Clarisa R. MD1

Collapse Box


Objective: The aim of this study was to estimate associations of obesity with reproductive hormone levels as women progress from premenopausal to postmenopausal status.

Methods: This was a longitudinal study conducted in the population-based Penn Ovarian Aging Cohort (N = 436). At cohort enrollment, the women were premenopausal, ages 35 to 47 years, with equal numbers of African Americans and whites. Anthropometric measures, menopause status, and reproductive hormone measures were evaluated for 12 years. Associations of the anthropometric measures with estradiol, follicle-stimulating hormone, and inhibin B in the menopausal transition were estimated using generalized linear regression models for repeated measures.

Results: Associations between obesity and hormone levels differed by menopause status as indicated by significant interactions between each hormone and menopausal stage. Premenopausal obese and overweight women had significantly lower estradiol levels compared with nonobese women, independent of age, race, and smoking (obese: 32.8 pg/mL [95% CI, 30.6-35.2] vs nonobese: 39.8 pg/mL [95% CI, 37.0-42.8], P < 0.001). The associations reversed postmenopause, with obese women having the highest estradiol levels (obese: 20.6 pg/mL [95% CI, 17.2-24.7] vs nonobese: 12.2 pg/mL [95% CI, 10.1-14.8], P < 0.001). Inhibin B levels were significantly lower in premenopausal obese compared with nonobese women but reversed in the late transition stage. Follicle-stimulating hormone levels were lowest in postmenopausal obese compared with nonobese women (P < 0.001). Measures of waist circumference (central adiposity) and waist-to-hip ratio paralleled the body mass index results.

Conclusion: Obesity is an important factor in hormone dynamics independent of age, race, and smoking in midlife women, although the mechanisms remain unclear.

©2010The North American Menopause Society


Article Tools


Article Level Metrics

Search for Similar Articles
You may search for similar articles that contain these same keywords or you may modify the keyword list to augment your search.