To the contrary, there are several studies associating lower testosterone levels with increased PrCa severity. In an effort to reconcile these differences, a saturation model was proposed which integrates data on androgen receptor responsiveness with clinical data on the effects of testosterone Morgentaler and Traish, 2009. In contrast to historical data, a number of studies suggest that TRT in selected PrCa patients does not lead to disease progression. Importantly, these data are from the pre-PSA era in a mixture of patients with advanced disease that were either untreated, in remission or relapse, and many of whom had prior androgen deprivation Fowler and Whitemore, 1982. This is in agreement with a separate study demonstrating higher incidence of PrCa on re-biopsy in men with HGPIN and lower serum testosterone levels Garcia-Cruz et al. 2012. Despite the large amount of basic science data implicating androgens in PrCa pathogenesis and progression, there is a lack of direct evidence that endogenous testosterone promotes PrCa progression in clinically localized disease.
As of 2025, it’s not yet approved for males who naturally experience a decline in testosterone as they age. For example, chemotherapy or radiation therapy can damage one of these organs. For years, debates around HRT have focused on its risks and benefits for women navigating menopause , with strong views on both sides. It is also a striking example of how women's health and men's health intersect. Prostate cancer is already the most common cancer in UK men , with around 64,000 new cases and 12,000 deaths each year. As more people live for longer with their disease controlled, the quality of those years matters just as much. Because injections strip away oestrogen as well as testosterone, they create a kind of sudden "male menopause" , complete with hot flushes, night sweats and thinning bones ..|Although this new information is somewhat reassuring, men and their doctors should still weigh these issues before committing to long term testosterone therapy. A relatively small number of men experience immediate side effects of testosterone supplementation, such as acne, disturbed breathing while sleeping (worsening sleep apnea), breast swelling or tenderness, or swelling in the ankles. Men can often feel a big difference when they stop therapy because their body's testosterone production has not yet recovered. On treatment, the body stops making testosterone.|Testosterone is a sex hormone, also known as an androgen. Thus, until the results of future RCTs are available, TRT should only be offered to select patients who are carefully monitored and well-informed about the potential risks and benefits. With concerns that testosterone can stimulate cancer growth, TRT in men with PrCa remains controversial. Whether hypogonadism promotes high-risk disease or is rather a symptom of high-risk disease remains unknown. However, after a large number of mostly retrospective studies, there remains no clear association with higher endogenous testosterone and the development or severity of PrCa. There is good evidence that androgens can promote PrCa in animal models and that ADT is beneficial in PrCa patients. There is an apparent disconnect between data supporting androgen-driven PrCa growth and the clinical data, although limited, demonstrating no increase in PrCa growth or progression in men on TRT.|So how can this paradox exist with evidence that normal testosterone levels are not harmful? Recent medical studies now show that testosterone treatment is safe. This led to the proposal of the "saturation model", which suggests that prostate tissue is sensitive to testosterone only at very low levels. "We have already developed new drugs that exploit this new mechanism and are bringing these to the clinic for evaluation as prostate cancer therapeutics."|There are a number of studies examining testosterone levels prior to prostate biopsy in men with suspected PrCa. A prospective cohort study of Korean men undergoing prostate biopsy for suspected PrCa compared biopsy results among men with low testosterone, defined as total testosterone levels below the median of 13.3 nmol/l (385 ng/dl). It should be noted that longitudinal studies of this kind are limited in that serum testosterone levels were not routinely drawn in the morning, and thus may not reflect the true peak circulating androgen levels.|However, they will often continue using hormone therapy to keep androgen levels down at this time. Hormone therapy, also known as androgen deprivation therapy, is a form of treatment that either lowers androgen levels or reduces their effects on cell growth. As a result, when doctors are treating prostate cancer, they may aim to reduce androgen levels alongside other therapies or surgery. Stopping testosterone from reaching prostate cancer cells can slow and shrink the cancer.|Treatment at this stage often eliminates the cancer. Fortunately, most people get diagnosed before it spreads beyond their prostate glands. This tiny gland secretes fluid that mixes with semen, keeping sperm healthy for conception and pregnancy. It usually grows slowly, and many people don’t need treatment right away.}
"Nature has designed a system where low doses of hormones stimulate cancer cell proliferation and high doses cause differentiation and suppress growth, enabling the same hormone to perform diverse functions," McDonnell said. In doing so, it activates the pathways that cause cancer cells to grow and spread. When androgen levels are low, the androgen receptor is encouraged to "go solo" in the cell. Hormone therapy also increases the likelihood of other treatment options, such as radiation therapy, being effective. Androgens can also help prostate cells grow by connecting to proteins that express the genes that lead to growth.
In contrast, in the European Male Aging Study (EMAS), using criteria of testosterone Wu et al. 2010. Prevalence estimates of LOH vary widely depending on study methods, populations and diagnostic criteria used. In a large, multi-institutional study of 3369 men aged 40 to 79 years, the European Male Aging Study (EMAS) attempted to better define the symptom complex of LOH. The decline in total testosterone is further influenced by an increase in SHBG that occurs with aging, which may lower bioavailable testosterone Vermeulen and Kaufman, 1995; Muller et al. 2003. The resulting amplitude of peak morning testosterone is decreased in older men, making morning testosterone measurement a useful laboratory marker in the diagnosis of LOH Bremner et al. 1983; Tenover et al. 1988; Wang et al. 2008. For instance, Ellison and colleagues demonstrated young adult elevations in testosterone and subsequent age-related declines in US and Congo populations, but not in Nepal or Paraguay Ellison et al. 2002. DHT also plays a well-established role in promoting continued growth of the adult prostate, leading to benign prostatic hypertrophy (BPH) Huggins, 1947; Andriole et al. 2004.|While data from large, prospective, randomized, controlled trials are absent, TRT in select prostate cancer patients is likely safe. Accompanying the rise in TRT are concerns of potential adverse effects, including cardiovascular risks and the promotion of prostate cancer. Certain existing health conditions make TRT unsafe, like prostate cancer, breast cancer and heart failure. You can stay on testosterone replacement therapy for as long as it’s benefiting your symptoms and not causing health issues. Certain existing health conditions make it unsafe, like prostate cancer and heart failure. Testosterone replacement therapy (TRT) is an option for men who have low testosterone levels due to male hypogonadism. But there are known risk factors, such as age (about 60 percent of prostate cancer cases occur in men over 65), family history of prostate cancer, obesity, and smoking.|In the end, the use of TRT in prostate cancer patients is still considered experimental and should only be offered after well-informed shared decision making and with close monitoring. Despite these fears, there are a growing number of studies demonstrating no increase in prostate cancer incidence among men on TRT. The ‘androgen hypothesis’ asserts that prostate cancer development and progression is driven by androgens, and thus TRT has the theoretical potential to drive prostate cancer development and progression. Over the last decade, increased awareness of hypogonadism among patients and providers has led to a significant rise in the use of testosterone replacement therapy (TRT) for hypogonadism, and especially in LOH. Together, you and your healthcare provider will weigh the risks and benefits of TRT to see if it could help. Testosterone replacement therapy can improve many of the symptoms of low testosterone (male hypogonadism). Before starting TRT, your healthcare provider will make sure low testosterone is an accurate diagnosis.|For a long time, testosterone replacement therapy (TRT) was off the table. You might be feeling miserable with symptoms of low testosterone. It suggests that a healthy, normal level of testosterone might actually be protective. You’d think that having high testosterone would put you at greater risk. Sign up to get tips for living a healthy lifestyle, with ways to lessen digestion problems…keep inflammation under control…learn simple exercises to improve your balance…understand your options for cataract treatment…all delivered to your email box FREE. This report will provide you with the information you need to understand the current controversies, avoid common pitfalls, and work with your doctor to make informed choices about your prostate health. Researchers measured PSA levels and conducted digital rectal exams of the prostate at regular intervals over the next three years.|AFTER BEING DIAGNOSED with prostate cancer, Ramiro feels thankful to be where he is today. "It’s important to remember that there are options to help manage prostate cancer today and many resources available too, and everyone needs to know that." He noticed that few people wanted to talk about prostate cancer, and although he felt supported by his family, the diagnosis was overwhelming. But when his father, Ramiro, was diagnosed with prostate cancer, it was a blitz Tony never saw coming. For years, the focus in prostate cancer has been on newer, more targeted drugs and immunotherapies. That is important because earlier attempts decades ago to treat prostate cancer with oestrogen pills fell out of favour when they were linked to more heart attacks and strokes. Standard treatment has long relied on shutting down testosterone, the fuel that drives many tumours, through regular injections that turn off the body’s own hormone production.|Androgen levels above the saturation point will have no further stimulatory effect, thus raising serum testosterone concentrations above the saturation point, as often seen with TRT, fails to induce growth of prostate tissues. The androgen hypothesis and robust clinical data supporting ADT in advanced PrCa have helped foster the dogma that TRT in PrCa patients is ‘like feeding the fire’. In a systematic review of 40 prospective studies of TRT in men without PrCa, no study demonstrated an association between TRT and PrCa risk. In a study of 673 men undergoing prostatectomy, Salonia and colleagues examined the association of morning testosterone with surgical pathology outcomes. Several studies have implicated lower testosterone with higher Gleason grade at the time of prostatectomy. They measured morning testosterone levels and compared 103 men diagnosed with BPH with 103 men diagnosed with PrCa.|TRT involves taking manufactured forms of testosterone to regulate your levels of this hormone. TRT has certain risks and benefits, so your healthcare provider will carefully evaluate if it’s safe and right for you. Testosterone replacement therapy (TRT) can help improve the symptoms of low testosterone due to male hypogonadism. For years, the focus in prostate cancer has been on newer , more targeted drugs and immunotherapies. The brain then dials down its instructions to the testes to make testosterone, so levels of the male hormone fall just as effectively as with injections designed to switch production off directly. Standard treatment has long relied on shutting down testosterone , the fuel that drives many tumours , through regular injections that turn off the body's own hormone production.|Now, the same patches are being recast as a potential life-prolonging treatment for men. For years, debates around HRT have focused on its risks and benefits for women navigating menopause, with strong views on both sides. It is also a striking example of how women’s health and men’s health intersect. That conversation may feel more like choosing between HRT options in the menopause clinic than the old, paternalistic model of cancer care where one default protocol is imposed. What the study does immediately is widen the menu of choices. Cost-effectiveness analyses and real-world data will follow.|When testosterone levels are very low, cancer cells can adjust by finding new ways to grow and survive. In his clinic, he saw that men with very low testosterone still developed prostate cancer that was often more aggressive, while men receiving testosterone therapy did not show the expected rise in cancer rates. All prostate cells, whether healthy or cancerous, contain androgen receptors.}
Before orchiectomy, you’ll likely need blood tests and other tests to make sure you’re in good enough overall health for surgery. Injections can be administered at a treatment center or your doctor’s office. Hormone therapy may be administered as a surgery, oral medications, or injections. LH stimulates the production of testosterone from your testes. LHRH agonists work by preventing your pituitary gland from secreting luteinizing hormone (LH).. Testicular changes with aging include loss of Leydig cells, decreased testosterone production, and decreased responsiveness of the testes to luteinizing hormone (LH) Rubens et al. 1974; Neaves et al. 1984. Accordingly, in the Baltimore Longitudinal Study on Aging (BLSA), roughly 10% of men in their 40s and 25% of men in their 70s were hypogonadal, based on serum testosterone levels Harman et al. 2001. The two principal androgens in men are testosterone, produced by testicular Leydig cells, and dihydrotestosterone (DHT), produced from testosterone in peripheral tissues by 5-α reductase.}
Stay on top of latest health news from Harvard Medical School. Benefits include practical tips to keep you healthy and vibrant, up-to-date health news explained simply and clearly, and special promo codes to use for our online courses, special reports, and more. Sign up for HEALTHBeat and receive trusted health information delivered right to your inbox. Get the latest in health news delivered to your inbox! Most men eventually develop some type of prostate problem, and when they do there are usually no easy solutions. However, the increase was small, and PSA levels did not rise again after that, according to the researchers.

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