There are several possible causes of low testosterone. It helps male features like a deepening voice and body hair growth develop. You can have different symptoms depending on your age. Testosterone levels naturally drop in men, so this is a common condition. Special cells (called Leydig cells) in your testicles make this hormone. Cleveland Clinic is a non-profit academic medical center. All treatment decisions are guided by licensed medical professionals experienced in men’s health and hormone care. Low testosterone levels can mimic symptoms of depression and cause anxiety over time Modern treatments like testosterone replacement therapy and peptide therapy offer unprecedented opportunities to optimize male hormone health. A comprehensive testosterone evaluation should include detailed medical history, physical examination, and laboratory testing. Some men find that martial arts or competitive sports provide healthy stress outlets while supporting testosterone production. When cortisol levels remain elevated, testosterone production suffers. Overtraining syndrome can suppress testosterone production for weeks or months. However, excessive endurance exercise—particularly long-duration cardio—can actually lower testosterone levels in some men. Your healthcare provider may recommend multiple tests to confirm deficiency, as testosterone levels can fluctuate based on sleep, stress, and other factors. High-intensity interval training (HIIT) can also support healthy testosterone levels when performed 2-3 times per week. Common peptides for men’s health include those that stimulate growth hormone release, improve sleep quality, enhance muscle recovery, and support metabolic function. In most cases, men need to have both low levels of testosterone in their blood and several symptoms of low testosterone to go on therapy. Whether as a treatment for female-to-male gender-affirming hormone therapy or for testosterone deficiency, there are numerous mental and physical health benefits. Effective testosterone treatment goes beyond simply raising hormone levels. Testosterone therapy suppresses sperm production, sometimes to zero, within months. Low testosterone can affect mental health and energy levels, often causing fatigue, irritability, mood swings, and even depression. It is important to note that several other medical conditions can mimic the symptoms of low testosterone, including depression, sleep apnea, hypothyroidism, and anemia, among others. Additionally, lifestyle factors such as sleep apnea and substance abuse can contribute to decreased testosterone levels. Testosterone plays a crucial role in men’s health, influencing everything from energy levels and mood to muscle mass, bone density, and sexual function. Most men feel improvement in symptoms within four to six weeks of taking testosterone replacement therapy, although changes like increases in muscle mass may take from three to six months. To make a diagnosis, a provider will consider your signs and symptoms. LOH and low testosterone are more common in those who have Type 2 diabetes, overweight and/or obesity. Late-onset hypogonadism (LOH) is a type of secondary male hypogonadism. That’s why it’s important to look at both your test results and your day-to-day symptoms if something feels off. Depending on the results, they may repeat the test or check other hormones to get a clearer picture of what’s going on. This is often a gradual change but can be noticeable and sometimes uncomfortable. Low testosterone may affect cognitive function, making it harder to focus, remember details, or stay mentally sharp during the day7. Low testosterone can directly affect your sex drive (libido)2. Think of it as one of the body’s main 'performance regulators.' Cleveland Clinic’s experts can help balance your hormones.
