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The opposite directional relationship has also been suggested, such that adiposity may decrease testosterone production. The effect of testosterone on these parameters in various populations has been the subject of debate in many meta-analyses.71 Many trials, including the TOM26 and TTrials,29 have indicated that TRT results in lower total and low-density lipoprotein cholesterol levels. However, due to the nature of the studies, reverse causality cannot be ruled out. Nettleship et al.65 found that testosterone slows atheroma development and reverses lipid deposition in the artery wall.
Thus the link between testosterone and aggression and violence is due to these being rewarded with social status. Studies have found higher pre-natal testosterone or lower digit ratio to be correlated with higher aggression. Studies conducted have found direct correlation between testosterone and dominance, especially among the most violent criminals in prison who had the highest testosterone. It is therefore the challenge of competition among males that facilitates aggression and violence. There are two theories on the role of testosterone in aggression and competition. Studies have found that testosterone facilitates aggression by modulating vasopressin receptors in the hypothalamus.
Pubertal effects begin to occur when androgen has been higher than normal adult female levels for months or years. For postnatal effects in both males and females, these are mostly dependent on the levels and duration of circulating free testosterone. The eligibility criteria for this analysis included all placebo-controlled studies that enrolled men (1) with low or low-normal testosterone levels, and (2) who received any testosterone formulation for ≥ 3 months. They concluded that TRT for hypogonadism does not appear to increase PSA or the risk of prostate cancer. No significant adverse CV events were noted.28 Further studies are needed to evaluate the clinical effects of TRT in CHF, but testosterone appears to be a promising therapeutic option for patients with CHF. No definitive statement can be made regarding the effects of testosterone replacement therapy on the levels of either LDL or HDL cholesterol.11 Interpretation of total T concentrations is confounded by variation between individuals, variation in serum SHBG, and variation in androgen sensitivity.6 Furthermore, considerable controversy has arisen regarding the accuracy of currently available commercial testosterone assays, especially those showing T levels at the lower end of the "normal" range.4 Free testosterone level may be a more reliable indicator of androgen status, but more studies are needed to confirm this.
Does testosterone replacement therapy (TRT) raise men's risk for heart attacks or stroke? In functional hypogonadism, which is most often, but not exclusively, found in older men, treatment of the underlying condition/comorbidity has been suggested to be mandatory prior to starting a TTh.1 As these men might have, because of age and the underlying comorbidity, an increased CV risk, it is essential to elucidate to whether TTh might affect this CV risk. Early research produced mixed results, with some studies suggesting a potential increase in cardiovascular events such as myocardial infarction and stroke, while others indicated possible cardiovascular benefits, particularly in men with coexisting conditions like metabolic syndrome and type 2 diabetes. Given the correlation of physical activity with various cardiovascular risk factors, it is unclear whether any observed associations with testosterone level are directly or indirectly mediated by one or more of the risk factors. The relationship between physical activity and testosterone levels is still unclear.
In humans and most other vertebrates, testosterone is secreted primarily by the testicles of males and, to a lesser extent, the ovaries of females. Insufficient levels of testosterone in men may lead to abnormalities including frailty, accumulation of adipose fat tissue within the body, anxiety and depression, sexual performance issues, and bone loss. In a comprehensive overview of systematic reviews to date, Onasanya and colleagues from the Johns Hopkins School of Public Heath concluded that currently available data regarding an association between TRT and CV events are conflicted.40 At this time, a detailed discussion with patients about the risks and benefits of TRT is essential until further data is available.
Emerging evidence indicates that congestive heart failure (CHF) is more than just a syndrome affecting a failing heart. Additional research is needed to further evaluate the association between low T levels and CAD severity. In their 2013 review, Oskui and colleagues reported on evidence suggesting that men with lower levels of endogenous T are more likely to develop CAD during their lifetimes.11 The severity of CAD has also been investigated as a function of serum T concentrations. Populations at high risk for TD include men with CHF, type 2 diabetes, obesity, chronic obstructive pulmonary disorder, HIV, and chronic opioid use.7 Testosterone deficiency (TD) is a well-established major medical condition that negatively impacts male sexuality, general health, and quality of life.
Studies of men who abuse anabolic steroids have clearly demonstrated higher risk of myocardial infarction and sudden cardiac death.10, 11, 12 In men, exogenous oestrogen therapy has also been trialled for secondary prevention of coronary disease, following acute myocardial infarction.13 This trial was terminated early due to a twofold increase in re-infarction and a significant increase in mortality. The article concludes with a discussion regarding the future direction for work in this interesting area, including the relative merits of screening for, and treating hypogonadism with testosterone replacement therapy in men with heart disease. Despite regional variations in the prevalence of coronary artery disease (CAD), men are consistently more at risk of developing and dying from CAD than women, and the gender-specific effects of sex hormones are implicated in this inequality. Although cross-sectional studies have demonstrated higher prevalence of CVD among men with low endogenous androgens, limited clinical data have not shown that testosterone replacement therapy (TRT) reduces CVD risk.
https://cyberdefenseprofessionals.com/companies/unveiling-the-truth-is-testosterone-a-controlled-sub

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