Increasing numbers of transgender and gender-diverse individuals are seeking initiation of gender-affirming hormone therapy. This aligns an individual's physical characteristics with their gender identity and improves psychological outcomes. Physical changes, including changes to muscle mass and body fat redistribution, can alter sex-specific laboratory reference ranges. We review the impact of gender-affirming hormone therapy on laboratory parameters with sex-specific reference ranges, with a focus on hemoglobin/hematocrit, renal function, cardiac biomarkers, and prostate-specific antigen. Gender-affirming hormone therapy results in changes in laboratory parameters with sex-specific reference ranges. For individuals established on gender-affirming hormone therapy, reference ranges that align with an individual's gender identity should be used for hemoglobin/hematocrit, serum creatinine, and high-sensitivity cardiac troponin and N-terminal brain natriuretic peptide. Clinicians should interpret these biomarkers according to the reference range that aligns with one's affirmed gender.
Abstract Objectives To assess rates of disruption of gender‐affirming health care, of coronavirus disease 2019 (COVID‐19) illness, testing, and vaccination, and of discrimination in health care among Australian trans people during the COVID‐19 pandemic. Design, setting Online cross‐sectional survey (1–31 May 2022); respondents were participants recruited by snowball sampling for TRANSform, an Australian longitudinal survey‐based trans health study, 1 May – 30 June 2020. Participants People aged 16 years or older, currently living in Australia, and with a gender different to their sex recorded at birth. Main outcome measures Proportions of respondents who reported disruptions to gender‐affirming health care, COVID‐19 illness, testing, and vaccination, and positive and negative experiences during health care. Results Of 875 people invited, 516 provided valid survey responses (59%). Their median age was 33 years (interquartile range, 26–45 years); 193 identified as women or trans women (37%), 185 as men or trans men (36%), and 138 as non‐binary (27%). Of 448 respondents receiving gender‐affirming hormone therapy, 230 (49%) reported disruptions to treatment during the pandemic; booked gender‐affirming surgery had been cancelled or postponed for 37 of 85 respondents (44%). Trans‐related discrimination during health care was reported by a larger proportion of participants than in a pre‐pandemic survey (56% v 26%). COVID‐19 was reported by 132 respondents (26%), of whom 49 reported health consequences three months or more after the acute illness (37%; estimated Australian rate: 5–10%). Three or more COVID‐19 vaccine doses were reported by 448 participants (87%; Australian adult rate: 70%). Conclusions High rates of COVID‐19 vaccination among the trans people we surveyed may reflect the effectiveness of LGBTIQA+ community‐controlled organisation vaccination programs and targeted health promotion. Training health care professionals in inclusive services for trans people could improve access to appropriate health care and reduce discrimination.
Purpose: In trans people undergoing feminizing hormone therapy, optimal estradiol concentrations are unclear, and anecdotally, some individuals desire supraphysiologic estradiol concentrations. We aimed to assess associations between estradiol concentration and psychological distress, well-being, and dysphoria. Second, we aimed to explore relationships between estradiol concentration and the risk of medical conditions potentially associated with estradiol therapy. Methods: This exploratory online cross-sectional study was conducted between June 2020 and March 2021, using a nonprobability snowball sampling method. Inclusion criteria included the following: (1) Currently living in Australia, (2) identification as transgender and using estradiol for gender affirmation purposes, and (3) 16 years of age or older. Estradiol concentrations were correlated with the Kessler Psychological Distress Scale (K10), the Personal Wellbeing Index (PWI-A), and gender dysphoria as measured by the Gender Congruence and Life Satisfaction Scale. Results: There were 172 participants, and the median estradiol concentration was 420 pmol/L (interquartile range 269–614). No clinically significant association was found between estradiol concentration with psychological distress, wellbeing, or gender dysphoria. While there was a statistically significant lower K10 score and higher PWI-A General Life Satisfaction score with higher estradiol concentrations, the order of magnitude was small and not clinically significant. There was no association between estradiol concentration and thrombosis, malignancy, stroke, myocardial infarction, or migraine. Conclusions: Given no clear association between higher estradiol concentrations, psychological distress, wellbeing, or dysphoria, approaches to estradiol hormone therapy should be individualized. Further prospective research, with larger sample sizes, is required to more thoroughly investigate optimal feminizing hormone therapy regimens.
Abstract Gender-affirming hormone therapy (GAHT) leads to changes in body composition, secondary sex characteristics and in the distribution and pattern of hair growth. Transgender individuals undergoing GAHT may experience altered hair growth patterns that may be affirming and desirable, or undesirable with a subsequent impact on their quality of life. Given increasing numbers of transgender individuals commencing GAHT worldwide and the clinical relevance of the impact of GAHT on hair growth, we systematically reviewed the existing literature on the impact of GAHT on hair changes and androgenic alopecia (AGA). The majority of studies used grading schemes or subjective measures of hair changes based on patient or investigator’s examination. Very few studies used objective quantitative measures of hair parameters but demonstrated statistically significant changes in hair growth length, diameter and density. Feminizing GAHT with estradiol and/or antiandrogens in transgender women may reduce facial and body hair growth and also can improve AGA. Masculinizing GAHT with testosterone in transgender men may increase facial and body hair growth as well as induce or accelerate AGA. The impact of GAHT on hair growth may not align with a transgender person’s hair growth goals and specific treatment for AGA and/or hirsutism may be sought. Further research on how GAHT affects hair growth is required.
Many transgender (trans) individuals utilize gender-affirming hormone therapy (GAHT) to promote changes in secondary sex characteristics to affirm their gender. Participation rates of trans people in sport are exceedingly low, yet given high rates of depression and increased cardiovascular risk, the potential benefits of sports participation are great. In this review, we provide an overview of the evidence surrounding the effects of GAHT on multiple performance-related phenotypes, as well as current limitations. Whilst data is clear that there are differences between males and females, there is a lack of quality evidence assessing the impact of GAHT on athletic performance. Twelve months of GAHT leads to testosterone concentrations that align with reference ranges of the affirmed gender. Feminizing GAHT in trans women increases fat mass and decreases lean mass, with opposite effects observed in trans men with masculinizing GAHT. In trans men, an increase in muscle strength and athletic performance is observed. In trans women, muscle strength is shown to decrease or not change following 12 months of GAHT. Haemoglobin, a measure of oxygen transport, changes to that of the affirmed gender within 6 months of GAHT, with very limited data to suggest possible reductions in maximal oxygen uptake as a result of feminizing GAHT. Current limitations of this field include a lack of long-term studies, adequate group comparisons and adjustment for confounding factors (e.g. height and lean body mass), and small sample sizes. There also remains limited data on endurance, cardiac or respiratory function, with further longitudinal studies on GAHT needed to address current limitations and provide more robust data to inform inclusive and fair sporting programmes, policies and guidelines.
There is an increasing demand for trans and gender diverse (TGD) health services worldwide. Given the unique and diverse healthcare needs of the TGD community, best practice TGD health services should be community-led. We aimed to understand the healthcare needs of a broad group of TGD Australians, how health professionals could better support TGD people, and gain an understanding of TGD-related research priorities. An anonymous online survey received 928 eligible responses from TGD Australian adults. This paper focuses on three questions out of that survey that allowed for free-text responses. The data were qualitatively coded, and overarching themes were identified for each question. Better training for healthcare professionals and more accessible transgender healthcare were the most commonly reported healthcare needs of participants. Findings highlight a pressing need for better training for healthcare professionals in transgender healthcare. In order to meet the demand for TGD health services, more gender services are needed, and in time, mainstreaming health services in primary care will likely improve accessibility. Evaluation of training strategies and further research into optimal models of TGD care are needed; however, until further data is available, views of the TGD community should guide research priorities and the TGD health service delivery.
We have used a rectangular surface coil and chemical shift imaging to conduct in vivo localized 31P NMR metabolic studies in a rat dorsal skin flap model. This approach permits regional comparisons without manipulation of either coil position or subject within the magnet bore. Both the PCr:Pi ratio (reflecting ischemia insult) and the PCr:ATP ratio (reflecting phosphagen reserves) decreased as functions of time and distance from the vascular pedicle. The maximum change was nearly 6-fold for the PCr:Pi ratio, and 3-fold for the PCr:ATP ratio. Signal contamination from subjacent muscle is constant and does not interfere with the metabolic evaluations of skin flaps. This technique may facilitate a better understanding of cutaneous metabolic derangements, such as burns and skin flaps used in reconstructive surgery, as well as studies of pharmacologic regimens developed for their treatment. It also holds potential for application in the study of congenital and neoplastic metabolic disorders of skin.
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