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Both studies demonstrated significant elevations in PSA from baseline in their study groups; however, the TRiUS study only demonstrated a nonsignificant increase in men over the age of 65 years. While the primary outcomes of the study focused on the metabolic syndrome, secondary outcomes included various prostate parameters. The Saturation Model postulates that the androgen receptors on the prostate are saturated at physiologic and even subphysiologic levels of T, such that there is minimal response of the prostatic tissue to TRT. Only seven men throughout the study were found to have PSA levels above 4.0 ng/ml, six of whom were treated for suspected prostatitis with a resultant interval decrease in PSA. One hundred and sixty-one men completed the 1-year study and 115 entered into a 5-year study extension; 51 men completed the sixth year of the study and reported a statistically significant increase from a mean baseline of 0.50 ng/ml to a mean level of 0.80 ng/ml (95% CI 0.19–0.41). Additionally, the authors admit that they were unable to explore whether or not the increase in CVD mortality was directly related to serum T levels or baseline TD. A limitation of this study centers on utilization of a healthcare database that did not include information on either serologic or diagnostic criteria for men who received TRT.
Because there are androgen receptors in the prostate, testosterone can make it grow. However, there was a higher incidence of pulmonary embolism, acute kidney injury, and atrial fibrillation among men who received testosterone replacement. But watching over these levels is another reason you should be under a doctor's care when taking testosterone. Thicker blood is linked to a greater risk of heart attack and stroke. In the case of heart attacks and strokes, the concern is that testosterone thickens blood because it binds to androgen receptors that stimulate bone marrow to produce more red blood cells.
Testosterone replacement therapy (TRT) can restore energy, improve mood, and reverse the effects of low testosterone, but it is not without risks. A study published in The Aging Male found that after 12 months of testosterone therapy, the percentage of guys with moderately severe to severe depression symptoms decreased from 17 percent to 2 percent. Testosterone replacement therapy helps raise your low testosterone levels. When you have low T, you might need testosterone therapy to boost your levels and reduce your symptoms. Testosterone is used to treat low testosterone levels caused by certain medical conditions, delayed puberty in males and advanced breast cancer in women. The primary concern with polycythemia is the increased risk of blood clots, which can lead to serious cardiovascular events such as heart attack or stroke.
A prospective cohort study examined 581 subjects with type 2 diabetes mellitus and known T levels with the purpose of observing the impact of TD on mortality and effect of T replacement Muraleedharan et al. 2013. Since these men were no longer in the T risk group, ideally they should have been more appropriately categorized in the non-T-treated group, which would have increased the number of events in this group by 70%. A retrospective cohort study of men with serum T levels below 300 ng/dl who underwent coronary angiography in the Veterans Affairs (VA) healthcare system between 2005 and 2011 investigated the association between TRT and all-cause mortality, myocardial infarction (MI), and stroke in 8709 men Vigen et al. 2013. In trials not explicitly funded by the pharmaceutical industry, the risk of a cardiovascular-related event on T therapy was greater odds ratio (OR) 2.06, 95% confidence interval (CI) 1.34–3.17 compared with trials funded by the pharmaceutical industry (OR 0.89, 95% CI 0.50–1.60). TRT has been shown to increase serum T to physiologic levels, improve libido, improve erectile dysfunction, improve overall sexual function, increase energy, improve mood, increase bone mineral density, decrease body fat mass, and increase lean body muscle mass Bhasin et al. 2010; Corona et al. 2013. Testosterone deficiency (TD) in men has garnered substantial attention over the last decade due to an increased awareness by medical providers, increased direct-to-consumer advertising in the media, and the increasing age of the male population. Here is how to take a cautious approach to testosterone therapy.
For women, testosterone therapy has a much narrower evidence-based use case, and treatment should remain within the female physiologic range rather than approach male-style replacement targets (Mulhall et al., Journal of Urology, 2018; Davis et al., Journal of Sexual Medicine, 2019). Because prostate cancer is so common, doctors tend to be leery of prescribing testosterone to men who may be at higher than average risk of having undiagnosed prostate cancer. Testosterone therapy may make sense for women who have low testosterone levels and symptoms that might be due to testosterone deficiency. Estrogen therapy increases sex hormone binding globulin and, like aging men, this reduces the amount of free, active testosterone in the body. Although testosterone may make prostate cancer grow, it is not clear that testosterone treatment actually causes cancer.