Duration, recency, and type of hormonal contraceptive use and antimullerian hormone levels

Objective: To assess whether the duration, recency, or type of hormonal contraceptive used is associated with antimullerian hormone (AMH) levels, given that the existing literature regarding the association between hormonal contraceptive use and AMH levels is inconsistent. Design: Cross-sectional study. Setting: Baseline data from the Study of the Environment, Lifestyle and Fibroids Study, a 5-year longitudinal study of African American women. Patient(s): The patients were 1,643 African American women aged 23-35 years at the time of blood drawing (2010-2012). Intervention(s): None. Main Outcome Measure(s): Serum AMH level was measured by an ultrasensitive enzyme-linked immunosorbent assay. Linear regression models were used to estimate percent differences in mean AMH levels and 95% confidence intervals (CIs) according to use of hormonal contraceptives, with adjustment for potential confounders. Result(s): In multivariable-adjusted analyses, current users of hormonal contraceptives had 25.2% lower mean AMH levels than non-users of hormonal contraceptives (95% CI: -35.3%, -13.6%). There was little difference in AMH levels between former users and non-users of hormonal contraceptives (-4.4%; 95% CI: -16.3%, 9.0%). AMH levels were not appreciably associated with cumulative duration of use among former users or time since last use among non-current users. Current users of combined oral contraceptives (-24.0%; 95% CI: -36.6%, -8.9%), vaginal ring (-64.8%; 95% CI: -75.4%, -49.6%), and depot medroxyprogesterone acetate (-26.7%; 95% CI: -41.0%, -8.9%) had lower mean AMH levels than non-users. Conclusion(s): The present data suggest that AMH levels are significantly lower among current users of most forms of hormonal con-traceptives, but that the suppressive effect of hormonal contraceptives on AMH levels is reversible. ((C) 2021 by American Society for Reproductive Medicine.)