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It has been shown that mental rotation testing affects testosterone, at least in women (Durdiakova et al., 2012). Some studies have found a positive relationship between testosterone and mental rotation in men (Silverman et al., 1999). Selected animal studies analyzing the relationship between testosterone and depression. Selected animal experiments on the effects of testosterone on depression are compared in Table 2. In a meta-analysis of the effects of testosterone on depression, the anti-depressant effect was positive, at least in patients suffering from hypogonadism (Zarrour et al., 2009).
This part examines the impact of testosterone on emotional regulation, shedding light on the potential consequences of hormonal imbalances for interpersonal relationships and overall quality of life. Testosterone plays a crucial role in regulating emotional stability, and its deficiency may contribute to heightened irritability and mood swings. Individuals with deficient testosterone may experience persistent feelings of sadness, hopelessness, and a general lack of interest in previously enjoyed activities. The section explores the intricacies of medical interventions for hypergonadism, emphasizing the need for a multidisciplinary approach that considers the specific context and health status of the individual. Females with hypergonadism may experience menstrual irregularities and masculinization effects such as deepening of the voice and clitoral enlargement. Conversely, hypergonadism, characterized by excessive testosterone production, presents its own set of physical consequences that warrant attention.
Over the years, levels of testosterone have been found to be lower in patients who report depression than non-depressed individuals.1,9–11 However, clinical trials have failed to distinguish the role of testosterone on depressive symptoms versus depressive disorders.12 Therefore, the role of testosterone on the treatment of depressive disorders remains a controversy.3,5,11,12 It is unknown whether symptoms of depression are brought about by a deficiency of testosterone in men or if testosterone treatment is effective in treating men with depressive symptoms and disorders.1,12 One of these treatments includes testosterone therapy which evidence suggests might improve depressed mood in older patients with low levels of testosterone and helps restore physical impairments caused by age-related hormonal changes. The effect of testosterone administration on cognitive function and depression in hypogonadal men is believed to be related to the enhancement of brain perfusion, which is supported by the fact that there are androgen receptors in the brain, suggesting that steroid hormones play a role in neuronal function. Whether testosterone plays a major role in the sex differences in depression is unclear, but a number of studies indicate that it can affect the mood of depressive patients as well as healthy probands (Mchenry et al., 2014). For men with low blood testosterone levels and symptoms most likely caused by a low level, the benefits of hormone replacement therapy usually outweigh potential risks.
Sartorius et al. showed, that there was no decline in testosterone levels in males who self-reported to be in very good health. Some men and women experience immediate side effects of testosterone treatment, such as acne, disturbed breathing while sleeping, breast swelling or tenderness, or swelling in the ankles. However, many men with normal testosterone levels have similar symptoms, so a direct connection between testosterone levels and symptoms is not always clear.
This distinction suggests that testosterone might influence specific depression symptoms differently.11 However, most studies assess depression as a single continuum without considering differences between specific symptoms.11 Anxiety, irritability, depression, and other mood changes are common in people with low testosterone. One significant consequence is the overprescription of antidepressants in men with low testosterone levels. However, under-detection and under-treatment burden healthcare services, as untreated individuals are more likely to seek medical treatment for both mental and physical issues.
Depression was significantly and inversely correlated with total testosterone in men with shorter AR CAG repeat lengths but not with moderate or longer CAG repeat lengths.129 Additional findings often seen in older men are declines in hypothalamic-pituitary-gonadal (HPG) axis function and dysthymic disorder (DD). Other steroid hormones including dehydroepiandrosterone (DHEA), estradiol (E2), progesterone (P) also show an age-dependent reduction at around the same age.118,119 Moreover, the subsequent principal component combining these four sex steroid hormones (T, DHEA, E2 and P) extracted the component of declining steroid hormones (DSH).
In conclusion, this article has endeavored to shed light on the intricate relationship between testosterone imbalances and psychological well-being. Integrating advancements in psychoneuroendocrinology and exploring the broader societal implications of testosterone-related disorders can pave the way for a more nuanced understanding and enhanced interventions. The identification of novel biomarkers, advanced neuroimaging techniques, and a deeper understanding of the genetic and epigenetic factors influencing testosterone regulation can contribute to more targeted and personalized interventions. Looking ahead, future research in the field of testosterone imbalances and their psychological impacts holds great promise. Holistic approaches may include lifestyle modifications, psychoeducation, behavioral interventions, and psychological support, ensuring a comprehensive strategy that attends to the diverse aspects of an individual’s health.
Similar results were found in adult male rats where only moderate testosterone doses resulted in spatial memory improvements (Spritzer et al., 2011). At least in men, it has been demonstrated that moderate dosing resulted in improved memory, but not low and very high increases of testosterone (Cherrier et al., 2007). It seems that the effect of testosterone is dose-dependent and could be curvilinear even within sexes. Similar findings were found in elderly men and women where estradiol slowed down the age-related memory decline (Carlson and Sherwin, 2000). In addition, patients with prostate cancer that need hormonal castration via androgen deprivation therapy had worse verbal memory than heathy controls. Similarly, biweekly injections of testosterone during 90 days resulted in memory decline (Maki et al., 2007). The positive effect of testosterone on memory was, however, well documented in both sexes.
NHANES cohort studies, we observed no consistent association of testosterone with a depression sum score in either men or women. However, some studies have suggested that both low and high levels of testosterone might be related to elevated depression risk . More research is needed to determine if declining testosterone levels directly influence depression development in adult men.14 While rodent models show that testosterone can reduce depressive symptoms, some human studies find no significant difference between TRT and placebo.14 While testosterone levels have been linked to atypical depression, the connection to melancholic depression is less clear. Men are increasingly open to discussing their mental health, leading to more GP visits and depression diagnoses.