Important lessons about testosterone therapy- weight loss vs. testosterone therapy for symptom resolution, classical vs. functional hypogonadism, and shortterm vs. lifelong testosterone therapy

Systematic reviews and meta-analyses on androgen administration in humans: an umbrella review

PURPOSE OF REVIEW

The present umbrella review systematically searches and synthesizes recent (2021-2023) systematic reviews and meta-analyses (SRMA) on androgen administration in humans.

RECENT FINDINGS

Results from 19 SRMA are synthesized. Four themes were identified: market for androgens, prevalence of androgen abuse, psychological effects of androgens, and clinical/therapeutic effects of androgens. One of three androgens on the illicit market are fake or substandard. Whereas one of three androgen users experiences dependence and various serious disorders, only one of three androgen users seeks physician support. Additionally, androgen administration increases self-reported aggression in healthy male individuals, and abuse positively correlates with interpersonal violence. Furthermore, androgen therapy is beneficial in treating persons suffering from various chronic diseases.

SUMMARY

In this umbrella review, we identified 19 SRMA on androgen use and abuse. Results show a high prevalence of fake androgens on the illicit market, a high prevalence of androgen abuse and dependence, and that a huge proportion of androgen users tend to avoid seeking support from clinicians. Also, androgen administration increases self-reported aggression among healthy male, and there is a positive correlation between androgen abuse and violent behavior. Finally, androgens have multiple therapeutic effects on various pathology.

Adipose Tissue Dysfunction and Obesity-Related Male Hypogonadism

Obesity is a chronic illness associated with several metabolic derangements and comorbidities (i.e., insulin resistance, leptin resistance, diabetes, etc.) and often leads to impaired testicular function and male subfertility. Several mechanisms may indeed negatively affect the hypothalamic–pituitary–gonadal health, such as higher testosterone conversion to estradiol by aromatase activity in the adipose tissue, increased ROS production, and the release of several endocrine molecules affecting the hypothalamus–pituitary–testis axis by both direct and indirect mechanisms. In addition, androgen deficiency could further accelerate adipose tissue expansion and therefore exacerbate obesity, which in turn enhances hypogonadism, thus inducing a vicious cycle. Based on these considerations, we propose an overview on the relationship of adipose tissue dysfunction and male hypogonadism, highlighting the main biological pathways involved and the current therapeutic options to counteract this condition.