There is no utility in continuing testosterone therapy in men who achieve target testosterone levels without symptom improvement. Patients on testosterone therapy should have serum testosterone levels checked every 6-12 months to ensure maintenance of target levels. It is the opinion of this Panel that total testosterone should be tested after the commencement of therapy at a time point that allows a patient to be sufficiently established on a dosing regimen before determining if therapeutic levels have been achieved and if dosing alterations are required. Aside from sexuality, it also contributes to some essential body functions such as embryological development, facial hair development, brain function, body muscle mass, bone strength, red blood cells function and even mood and energy levels. "They will downregulate their receptors at a time when the drug is wearing off, so we will see a period of low testosterone, low receptor, and that’s not good for cancer cells," says Denmeade. Prostate cancer cells are not expecting an intense dose of testosterone, and they don’t know that it’s a short burst. They concluded that high testosterone was dangerous for PCa patients. The normal range for serum testosterone is 300 to 1,000 ng/dl. TRT is currently prescribed for older men with either low serum testosterone (T) or low T plus accompanying symptoms of hypogonadism. While US testosterone prescriptions have tripled in the past decade (9), debate continues over the risks and benefits of TRT. General fatigue and malaise has so many other causes, and when most men get a blood test, the result is a normal testosterone level. Cleveland Clinic’s health articles are based on evidence-backed information and review by medical professionals to ensure accuracy, reliability and up-to-date clinical standards. If you think you may have symptoms of low testosterone or excess testosterone, talk to your healthcare provider. Testosterone levels in males naturally decline with age. The symptoms of low testosterone vary based on your age. In female adults, high levels of testosterone may be a sign of polycystic ovary syndrome (PCOS). Testosterone is an essential part of reproductive health. It affects male fetuses as they develop in the uterus, as well as teenage sexual development during puberty. Testosterone deficiency during fetal development doesn’t allow male characteristics to develop normally. Late-onset hypogonadism affects about 2% of men over the age of 40. This condition is very common — up to 15% of females of reproductive age have it. Supplements aren't the only way to increase your testosterone levels naturally. A review of dozens of clinical trials showed that DHEA supplements do increase blood testosterone levels in men and women. Long-term zinc supplementation may lead to increased testosterone levels. Zinc deficiency has been linked to low testosterone levels. Several types of supplements claim to increase your testosterone levels. Some older people on testosterone therapy could face increased cardiac risks. While testosterone therapy can be an option, it has disadvantages as well. A study by Pastuszak et al. (2015)355 found a significant increase in biochemical recurrence in high-risk patients who received testosterone therapy after RT or RT/ADT. Product labels for all testosterone formulations explicitly state that their use is contraindicated in men with a history of prostate cancer, which results from Huggins' precept that testosterone therapy feeds prostate cancer cell proliferation. Given the increasing incidence of both testosterone deficiency and prostate cancer with advancing age, it is common for the two conditions to co-exist in older men. The treatment and placebo arms did not differ at baseline in terms of age (62.9 years versus 64.4 years, respectively), total testosterone level (320 ng/dL versus 344 ng/dL, respectively), or PSA measurements (1.3 ng/mL in both arms). Since Huggins' work, subsequent research has failed to definitively link testosterone therapy to a progression of prostate cancer in the untreated patient or recurrence in the treated patient. The relationship between testosterone therapy and the development of prostate cancer has been debated.
