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Testosterone Deficiency

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Written by Andrew Le, MD.
Last updated August 6, 2024

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Understanding Testosterone Deficiency

Testosterone deficiency, or hypogonadism, happens when the body doesn't produce enough testosterone. There are two main types of hypogonadism: primary and secondary.

Primary hypogonadism happens when the testicles themselves can't produce enough testosterone. This can be because of testicular injury, infection, undescended testicles, genetic disorders, or treatments like radiation or chemotherapy.21,22

Secondary hypogonadism is caused by problems with the pituitary gland or hypothalamus in the brain, which control testosterone production. Pituitary disorders, inflammatory diseases, HIV/AIDS, and certain medications like opioids can all cause secondary hypogonadism.21,22

As men get older, their testosterone levels naturally go down, typically starting around age 30 and continuing to decrease by about 1% to 2% each year.23,24 However, testosterone deficiency can develop at any age from underlying health issues or other factors. Obesity, metabolic syndrome, type 2 diabetes, and chronic illnesses increase your chance of developing of low testosterone.25,10

To diagnose testosterone deficiency, healthcare providers will do a physical exam, ask about symptoms, and order blood tests. They'll measure the total amount of testosterone in the blood, which includes both bound and free testosterone, as well as the free testosterone that's readily available for the body to use. Since testosterone levels can change throughout the day, multiple tests over time may be needed to confirm low levels.

The most common symptoms of low testosterone are:

  • Decreased sex drive
  • Erectile dysfunction
  • Reduced muscle mass and strength
  • Increased body fat (especially belly fat)
  • Fatigue
  • Low energy
  • Mood changes like irritability or depression
  • Sleep problems
  • Lower bone density
  • Trouble with memory and concentration
  • Hot flashes
  • Reduced body hair16,17

Exploring Testosterone Replacement Therapy

For men diagnosed with testosterone deficiency, testosterone replacement therapy (TRT) is a treatment option that can help restore normal hormone levels and improve symptoms. TRT supplements the body with testosterone through injections, gels, patches, or other methods to bring levels back into the normal range.

Testosterone injections are one of the most common and cost-effective forms of TRT. They're typically injected into muscle every one to two weeks.9 Gels and patches that are applied to the skin daily are another option, although they can be more expensive.10,11 Other less common methods include tablets that dissolve in the gums or pellets surgically placed under the skin.

Studies have shown that restoring testosterone to normal levels can improve sexual function, increase muscle mass and strength, boost bone density, improve mood and cognitive function, and raise energy levels.1,2

TRT does come with potential risks and side effects. The most common concerns are an increased risk of prostate problems like benign prostatic hyperplasia (BPH), sleep apnea, fluid retention, acne, breast enlargement, and polycythemia (high red blood cell count).1,2

Because of these risks, healthcare providers usually only recommend TRT for men with clear symptoms and consistently low testosterone levels.1,2 Regular follow-up appointments to monitor testosterone levels, prostate health, and blood counts are important.

The Impact of Low Testosterone on Health

Low testosterone can have many effects on a man's physical and emotional health. Some of these impacts are:

  • Sexual function: Men with low testosterone often have a decreased sex drive and erectile dysfunction.10,11
  • Muscle mass, strength, and body composition: When levels are low, muscle size and definition may decrease, even with regular exercise. At the same time, body fat tends to increase, especially in the belly area.15,16 These changes in body composition not only affect your physical functioning and appearance but also increase the risk of metabolic problems like obesity and type 2 diabetes.16,17
  • Lower bone mineral density: This increases the risk of osteoporosis and fractures, especially in older men.3,4
  • Mood and brain function: Men with low testosterone often report symptoms like fatigue, depression, irritability, and difficulty concentrating.12,13
  • Heart health: Low testosterone may increase the risk of heart disease.5,6 Maintaining healthy testosterone levels through lifestyle changes and, if needed, TRT, may help support overall cardiovascular health.
  • Metabolic syndrome: Metabolic syndrome is a cluster of risk factors that includes high blood pressure, high blood sugar, excess belly fat, and abnormal cholesterol levels.8,25 Having metabolic syndrome increases the risk of serious health problems like heart disease, stroke, and type 2 diabetes. Addressing low testosterone may be one part of managing metabolic health in men.

Recognizing the Symptoms of Testosterone Imbalance

While low testosterone is a common concern, high testosterone can be an issue as well. Some men may experience symptoms of high testosterone, such as acne, increased aggression, and an enlarged prostate.18 High testosterone levels can also increase the risk of heart problems and other health issues.18

In addition to the symptoms of low testosterone already discussed, men with testosterone deficiency may experience:

  • Hot flashes or excessive sweating
  • Decreased facial and body hair growth
  • Smaller testicle size
  • Breast tissue development (gynecomastia)

If you think you may have a testosterone imbalance, it's important to talk to your healthcare provider. They can do a physical exam, review your symptoms, and order blood tests to check your hormone levels.

Managing Testosterone Levels through Lifestyle Changes

In addition to testosterone replacement therapy, lifestyle changes can also play a significant role in managing testosterone levels naturally.

  • Exercise: Exercise, especially resistance training like weightlifting, is one of the most powerful ways to boost testosterone. For people with low testosterone and obesity, physical activity can sometimes be even more beneficial than cutting calories for raising testosterone.26 Regularly doing strength training exercises causes an immediate spike in testosterone and supports long-term testosterone production.
  • Diet: Eating a balanced, nutrient-rich diet with plenty of healthy fats from foods like avocados, nuts, and fatty fish can help support testosterone production. Zinc is also important for testosterone synthesis, so incorporating zinc-rich foods like oysters, beef, and beans is beneficial.26,27
  • Stress management: Chronic stress leads to high levels of the hormone cortisol, which can suppress testosterone.27 You can reduce the negative effects of stress on testosterone production by finding ways to lower stress, such as through meditation, deep breathing, or yoga.
  • Sleep: Both short-term and chronic sleep deprivation can dramatically reduce testosterone production.26,32 7-8 hours of uninterrupted sleep each night gives your body the opportunity to make testosterone.
  • Environmental factors: Exposure to hormone-disrupting chemicals found in certain plastics, pesticides, and personal care products has been tied to lower testosterone levels and other endocrine issues.28,29 Choosing organic produce and natural grooming products can help minimize exposure to these chemicals.

While lifestyle changes can be an effective way to naturally optimize testosterone levels, factors like age, genetics, and underlying health conditions can all impact testosterone production and how well lifestyle changes work.30,33 If you have concerns about your testosterone levels or are experiencing symptoms of low testosterone, it's always best to consult with your healthcare provider for guidance and treatment options.

Conclusion

Testosterone deficiency is a complex condition that can impact a man's physical, emotional, and sexual well-being. By understanding the symptoms, causes, and treatment options for low testosterone, men can take proactive steps to optimize their hormone levels and improve their overall health.

If you think you may have a testosterone imbalance, don't hesitate to talk to your healthcare provider. They can run the necessary tests, evaluate your situation, and recommend the most appropriate course of action.

Citations:

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<2>Calof, O. M., Singh, A. B., Lee, M. L., Kenny, A. M., Urban, R. J., Tenover, J. L., & Bhasin, S. (2005). Adverse events associated with testosterone replacement in middle-aged and older men: a meta-analysis of randomized, placebo-controlled trials. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 60(11), 1451-1457.</2>

<3>Krause, W., Mueller, U., & Mazur, A. (2005). Testosterone supplementation in the aging male: which questions have been answered?. Aging Male, 8(1), 31-38.</3>

<4>Hajjar, R. R., Kaiser, F. E., & Morley, J. E. (1997). Outcomes of long-term testosterone replacement in older hypogonadal males: a retrospective analysis. The Journal of Clinical Endocrinology & Metabolism, 82(11), 3793-3796.</4>

<5>Kaplan, A., & Hu, J. C. (2013). Use of testosterone replacement therapy in the United States and its effect on subsequent prostate cancer outcomes. Urology, 82(2), 321-326.</5>

<6>Killick, R., Wang, D., Hoyos, C., Yee, B. J., Grunstein, R. R., & Liu, P. Y. (2013). The effects of testosterone on ventilatory responses in men with obstructive sleep apnea: a randomised, placebo-controlled trial. The Journal of Clinical Endocrinology & Metabolism, 98(11), 4556-4566.</6>

<7>Vigen, R., O'Donnell, C. I., Barón, A. E., Grunwald, G. K., Maddox, T. M., Bradley, S. M., ... & Rumsfeld, J. S. (2013). Association of testosterone therapy with mortality, myocardial infarction, and stroke in men with low testosterone levels. Jama, 310(17), 1829-1836.</7>

<8>Barhouse, P. S., Albright, J. A., Rebello, E., Chang, K., Quinn, M. S., Daniels, A. H., ... & Gil, J. A. (2023). Testosterone Replacement Therapy and Associated Rates of Trigger Finger, de Quervain Tenosynovitis, and Their Subsequent Management. The Journal of Hand Surgery, 48(3), 239-246.</8>

<9>Hussain, M. R., Abdelgadir, O., Polychronopoulou, E., Tsilidis, K. K., Alzweri, L., Villasante-Tezanos, A., ... & Lopez, D. S. (2023). Evaluating the impact of pre-diagnostic use of statins and testosterone replacement therapy on mortality outcomes in older men with hormone-related cancers: Surveillance, Epidemiology, and End Results-Medicare 2007-2015. The Prostate, 83(4), 443-453.</9>

<10>Asanad, K., Horns, J. J., Driggs, N., Samplaski, M. K., & Hotaling, J. M. (2023). Untreated hypogonadism and testosterone replacement therapy in hypogonadal men are associated with a decreased risk of subsequent prostate cancer: a population-based study. The Prostate, 83(4), 454-461.</10>

<11>Bhasin, S., Travison, T. G., Pencina, K. M., O'Leary, M., Cunningham, G. R., Lincoff, A. M., ... & Thompson, I. M. (2023). Prostate Safety Events During Testosterone Replacement Therapy in Men With Hypogonadism: A Randomized Clinical Trial. JAMA, 329(5), 401-410.</11>

<12>Lee, T. W., Kao, P. Y., Chen, Y. C., & Wang, S. T. (2023). Effects of Testosterone Replacement Therapy on Muscle Strength in Older Men with Low to Low-Normal Testosterone Levels: A Systematic Review and Meta-Analysis. Journal of the American Geriatrics Society, 71(3), 443-453.</12>

<13>Yassin, A. A., Nettleship, J., Almehmadi, Y., Salman, M., & Saad, F. (2016). Effects of continuous long-term testosterone therapy (TTh) on anthropometric, endocrine and metabolic parameters for up to 10 years in 115 hypogonadal elderly men: Real-life experience from an observational registry study. Andrologia, 48(7), 793-799.</13>

<14>Tsujimura, A., Takada, S., Matsuoka, Y., Hirai, T., Takao, T., Miyagawa, Y., ... & Okuyama, A. (2017). Is discontinuation of hormone replacement therapy possible for patients with late-onset hypogonadism?. Acta Endocrinologica, 13(2), 144-149.</14>

<15>Bhasin, S., Brito, J. P., Cunningham, G. R., Hayes, F. J., Hodis, H. N., Matsumoto, A. M., ... & Yialamas, M. A. (2018). Testosterone therapy in men with hypogonadism: an Endocrine Society clinical practice guideline. The Journal of Clinical Endocrinology & Metabolism, 103(5), 1715-1744.</15>

<16>Snyder, P. J., Bhasin, S., Cunningham, G. R., Matsumoto, A. M., Stephens-Shields, A. J., Cauley, J. A., ... & Swerdloff, R. S. (2016). Effects of testosterone treatment in older men. New England Journal of Medicine, 374(7), 611-624.</16>

<17>Basaria, S., Coviello, A. D., Travison, T. G., Storer, T. W., Farwell, W. R., Jette, A. M., ... & Bhasin, S. (2010). Adverse events associated with testosterone administration. New England Journal of Medicine, 363(2), 109-122.</17>

<18>Morgentaler, A., Zitzmann, M., Traish, A. M., Fox, A. W., Jones, T. H., Maggi, M., ... & Aversa, A. (2015). Fundamental concepts regarding testosterone deficiency and treatment: international expert consensus resolutions. Mayo Clinic Proceedings, 90(7), 990-1003.</18>

<19>Saad, F., Aversa, A., Isidori, A. M., Zafalon, L., Zitzmann, M., & Gooren, L. (2011). Onset of effects of testosterone treatment and time span until maximum effects are achieved. European Journal of Endocrinology, 165(5), 675-685.</19>

<20>Saad, F., Haider, A., Doros, G., & Traish, A. (2013). Long-term treatment of hypogonadal men with testosterone produces substantial and sustained weight loss. Obesity, 21(10), 1975-1981.</20>

<21>Hackett, G., Cole, N., Bhartia, M., Kennedy, D., Raju, J., & Wilkinson, P. (2013). Testosterone replacement therapy with long-acting testosterone undecanoate improves sexual function and quality-of-life parameters vs. placebo in a population of men with type 2 diabetes. The Journal of Sexual Medicine, 10(6), 1612-1627.</21>

<22>Hackett, G., Cole, N., Bhartia, M., Kennedy, D., Raju, J., & Wilkinson, P. (2014). The response to testosterone undecanoate in men with type 2 diabetes is dependent on achieving threshold serum levels (the BLAST study). International Journal of Clinical Practice, 68(2), 203-215.</22>

<23>Glaser RL, et al. (2012). Improvement in scalp hair growth in androgen-deficient women treated with testosterone: a questionnaire study. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3380548</23>

<24>Low testosterone levels and the risk of anemia in older men and women. https://jamanetwork.com/journals/jamainternalmedicine/fullarticle/410603</24>

<25>Ghadimi, M., Sharifi, S. D., Najafi, A., & Mohammadi, H. (2022). Gallic acid supplementation partially ameliorates reproductive aging in rooster breeders by improving semen quality, sperm kinetics, hormones, and antioxidant status. Poultry Science, 101(2), 101532. https://doi.org/10.1016/j.psj.2021.101532</25>

<26>Ljunggren, L., Butler, E., Axelsson, J., Åström, M., & Ohlsson, L. (2023). Effects of probiotic supplementation on testosterone levels in healthy ageing men: A 12-week double-blind, placebo-controlled randomized clinical trial. Scandinavian Journal of Gastroenterology, 58(1), 1-6. https://doi.org/10.1080/00365521.2022.2160498</26>

<27>Yarmohammadi Barbarestani, S., Samadi, F., Ansari Pirsaraei, Z., & Zaghari, M. (2022). Barley sprouts and D-Aspartic acid supplementation improves fertility, hatchability, and semen quality in aging male broiler breeders by up-regulating StAR and P450. Poultry Science, 101(4), 101688. https://doi.org/10.1016/j.psj.2022.101688</27>

<28>Kenny, A. M., Bellantonio, S., Gruman, C. A., Acosta, R. D., & Prestwood, K. M. (2002). Effects of transdermal testosterone on cognitive function and health perception in older men with low bioavailable testosterone levels. The Journals of Gerontology Series A: Biological Sciences and Medical Sciences, 57(5), M321-M325.</28>

<29>Snyder, P. J., Bhasin, S., Cunningham, G. R., Matsumoto, A. M., Stephens-Shields, A. J., Cauley, J. A., ... & Farrar, J. T. (2016). Testosterone treatment and cognitive function in older men with low testosterone and age-associated memory impairment. JAMA, 317(7), 717-727.</29>

<30>Emmelot-Vonk, M. H., Verhaar, H. J., Nakhai Pour, H. R., Aleman, A., Lock, T. M., Bosch, J. L., ... & van der Schouw, Y. T. (2008). Effect of testosterone supplementation on functional mobility, cognition, and other parameters in older men: a randomized controlled trial. JAMA, 299(1), 39-52.</30>

<31>Yeap, B. B., Alfonso, H., Chubb, S. A., Handelsman, D. J., Hankey, G. J., Norman, P. E., & Flicker, L. (2014). In older men, lower plasma testosterone is associated with higher body fat, less muscle, and poorer physical function. The Journal of Clinical Endocrinology & Metabolism, 99(10), 1700-1707.</31>

<32>Sattler, F. R., Castaneda-Sceppa, C., Binder, E. F., Schroeder, E. T., Wang, Y., Bhasin, S., ... & Azen, S. P. (2009). Testosterone and growth hormone improve body composition and muscle performance in older men. The Journal of Clinical Endocrinology & Metabolism, 94(6), 1991-2001.</32>

<33>Beauchet O. Testosterone and cognitive function: current clinical evidence of a relationship. Eur J Endocrinol 2006;155:773–781.</33>

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Dr. Le obtained his MD from Harvard Medical School and his BA from Harvard College. Before Buoy, his research focused on glioblastoma, a deadly form of brain cancer. Outside of work, Dr. Le enjoys cooking and struggling to run up-and-down the floor in an adult basketball league.

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