One of the commonly desired effects of testosterone gender-affirming hormone therapy (GAHT) is that it usually stops menstrual periods. Both TT and FT peak at ovulation in females with regular (ovulatory) menstrual cycles. Most studies included females of reproductive age with regular menstrual cycles and they ranged from adolescents to premenopausal females. In females, serum androgen levels are higher than serum estrogen levels, even though the main effects of these hormones in women are those mediated by estrogen. The present review critically evaluates the published literature on serial T measurements during the menstrual cycle (MC) in healthy females. Its effects are more expressed mid-cycle in the days leading up to ovulation, which is designed to encourage sexual intercourse in a woman's most fertile period and, ultimately, promote reproduction. "Before starting testosterone, I had extremely bad cramps and my period lasted 6–7 days each time. It's common, and totally understandable, to have a lot of questions when you're considering starting hormone replacement therapy (HRT). Estrogen, specifically estradiol, and progesterone concentrations fluctuate strongly during the menstrual cycle. Our research shows that for about 3 in 4 people (75%), their periods will stop within the first six months of starting testosterone. While many people find their periods stop soon after they start testosterone, others find that their periods don’t stop, or that they stop and start intermittently. Some studies, however, considered a range of days after the beginning of the MC for drawing blood in the FP, while mid cycle was defined as day and the LP as after the mid cycle. Some days I need two showers to avoid smelling of body odor and to prevent breakouts (which happen frequently, thanks to my second puberty). However, I noticed that it seemed to level out after being on the same dose of testosterone for an extended period of time. Ladies, it’s time to make those hormones work in your favor. The late follicular phase is the ideal time for your muscles to exercise. A recent study from 2017 confirmed that having a higher training frequency in the follicular phase results in the best progress. Most studies reported at least a minute mid-cycle increase in TT, which coincided with ovulation. Testosterone measurements were done at variable time points in the MC and few studies reported daily or every other day (EOD) serum sampling36-39. The authors performed an integrative systematic review of published literature, indexed in the PubMed database, describing changes in T levels during the MC in otherwise healthy females. Understanding of the clinical significance of T across the menstrual cycle (MC) has remained limited, partly due to these factors. Measuring serum T levels has limitations due to issues with the method accuracy, precision, sensitivity and specificity at the low hormone levels found in women. Much of what is known comes from the study of conditions of excess or insufficiency in men and women, or from extrapolation of results from in vitro and animal studies . The importance of estrogen and progesterone in female reproduction and chronic disease is well documented but the role of T in women’s health is less emphasized.
