» Articles » PMID: 18334590

Changes over 14 Years in Androgenicity and Body Mass Index in a Biracial Cohort of Reproductive-age Women

Abstract

Background: Body mass index (BMI) is directly related to testosterone (total T and free T) and inversely to SHBG cross-sectionally, but little is known about how changes in body fat and androgen markers affect each other over time.

Methods: Participants included 969 White and Black women from the Coronary Artery Risk Development in Young Adults (CARDIA) cohort, who were ages 18-30 at entry into the study and were pre- or perimenopausal 16 yr later at the time of the CARDIA Women's Study (CWS). Total T and SHBG were assayed from specimens drawn at the CWS examination and stored serum from the yr 2 and 10 CARDIA exams. Free T was calculated based on total T and SHBG. BMI and waist circumference were measured at yr 2, 10, and 16.

Results: Despite clinically significant increases in BMI and waist circumference, total T and free T tended to decline, whereas SHBG remained relatively constant. BMI and waist circumference were directly correlated with free T and inversely correlated with SHBG in cross-sectional analyses. In longitudinal, multivariable analyses, an annualized increase in BMI was inversely related to a concurrent annualized decrease in SHBG (beta = -0.79 ng/dl, and se = 0.22 in Blacks; beta = -1.07 ng/dl; and se = 0.31 in Whites). However, early increases in BMI were not related to later decreases in SHBG.

Conclusion: Increases in adiposity are closely tied to decreases in SHBG, but changes in BMI and SHBG may occur concurrently rather than sequentially.

Citing Articles

Androgenicity in Young Women and Development of Metabolic Syndrome Before Menopause: The CARDIA and CARDIA Women's Studies.

Vu T, Pirzada A, Lewis C, Schreiner P, Liu K, Sternfeld B J Endocr Soc. 2024; 8(2):bvad174.

PMID: 38213908 PMC: 10783251. DOI: 10.1210/jendso/bvad174.


Women's Reproductive Milestones and Cardiovascular Disease Risk: A Review of Reports and Opportunities From the CARDIA Study.

Kim C, Catov J, Schreiner P, Appiah D, Wellons M, Siscovick D J Am Heart Assoc. 2023; 12(5):e028132.

PMID: 36847077 PMC: 10111436. DOI: 10.1161/JAHA.122.028132.


Covariation of change in bioavailable testosterone and adiposity in midlife women.

Janssen I, Powell L, Jasielec M, Kazlauskaite R Obesity (Silver Spring). 2015; 23(2):488-494.

PMID: 25557490 PMC: 4310763. DOI: 10.1002/oby.20974.


Do changes in sex steroid hormones precede or follow increases in body weight during the menopause transition? Results from the Study of Women's Health Across the Nation.

Wildman R, Tepper P, Crawford S, Finkelstein J, Sutton-Tyrrell K, Thurston R J Clin Endocrinol Metab. 2012; 97(9):E1695-704.

PMID: 22723312 PMC: 3431568. DOI: 10.1210/jc.2012-1614.


Hormone replacement therapy and physical function in healthy older men. Time to talk hormones?.

Giannoulis M, Martin F, Nair K, Umpleby A, Sonksen P Endocr Rev. 2012; 33(3):314-77.

PMID: 22433122 PMC: 5393154. DOI: 10.1210/er.2012-1002.


References
1.
Haffner S, Valdez R, MORALES P, Hazuda H, Stern M . Decreased sex hormone-binding globulin predicts noninsulin-dependent diabetes mellitus in women but not in men. J Clin Endocrinol Metab. 1993; 77(1):56-60. DOI: 10.1210/jcem.77.1.8325960. View

2.
PEARLMAN W, CREPY O, Murphy M . Testosterone-binding levels in the serum of women during the normal menstrual cycle, pregnancy, and the post-partum period. J Clin Endocrinol Metab. 1967; 27(7):1012-8. DOI: 10.1210/jcem-27-7-1012. View

3.
Kopp H, Krzyzanowska K, Schernthaner G, Kriwanek S, Schernthaner G . Relationship of androgens to insulin resistance and chronic inflammation in morbidly obese premenopausal women: studies before and after vertical banded gastroplasty. Obes Surg. 2006; 16(9):1214-20. DOI: 10.1381/096089206778392130. View

4.
Nestler J, Powers L, Matt D, Steingold K, Plymate S, Rittmaster R . A direct effect of hyperinsulinemia on serum sex hormone-binding globulin levels in obese women with the polycystic ovary syndrome. J Clin Endocrinol Metab. 1991; 72(1):83-9. DOI: 10.1210/jcem-72-1-83. View

5.
Raison J, Bonithon-Kopp C, Egloff M, Ducimetiere P, Guy-Grand B . Hormonal influences on the relationships between body fatness, body fat distribution, lipids, lipoproteins, glucose and blood pressure in French working women. Atherosclerosis. 1990; 85(2-3):185-92. DOI: 10.1016/0021-9150(90)90110-5. View