What Causes Low Testosterone in Men?

Feeling more tired than usual, noticing changes in sexual function, or struggling to maintain the same strength and muscle tone can sometimes point to changes happening beneath the surface. Low testosterone can develop as hormone production naturally declines with age, but certain health conditions, medications, lifestyle factors, and other hormonal issues may also contribute. 

Because testosterone plays a role in energy, sexual health, muscle strength, mood, and overall male hormone health, lower levels can affect several areas of daily life. At Fontaine MD Aesthetics and Anti-Aging Medicine, Dr. James D. Fontaine evaluates symptoms alongside hormone levels to determine whether testosterone therapy in San Diego may be appropriate. 

Does testosterone decrease with age? 

Testosterone levels typically decrease as men get older. Testosterone is produced primarily in the testes, with production influenced by signals from the brain and pituitary gland. As the body ages, testosterone production may gradually slow, leading to declining testosterone levels and noticeable hormonal changes in men. Age-related changes do not affect every man in the same way, however. 

Some men may experience only minor differences, while others notice symptoms that begin to interfere with their energy, sexual health, physical performance, or sense of well-being. Dr. Fontaine can use laboratory testing along with a discussion of symptoms to develop a clearer picture of hormone function. 

What other factors can contribute to low testosterone? 

Age is only one possible contributor to lower testosterone levels. Certain medical conditions or treatments can affect the body's ability to maintain healthy hormone levels, which is why identifying the underlying cause matters before deciding on treatment. Our practice notes that low testosterone may occur because of aging, certain health conditions, or treatments for illnesses such as cancer. 

Other factors that may influence hormone balance can include obesity, chronic health concerns, problems involving the testes or pituitary gland, some medications, poor sleep, and significant physical stress. Looking beyond a single lab number helps Dr. Fontaine assess the broader factors that may be influencing hormone balance. 

What are common low testosterone symptoms? 

The signs of low T can extend well beyond changes in libido. Because testosterone influences several functions throughout the body, low testosterone symptoms may show up in physical, sexual, and emotional ways. Some common concerns include:   

• Persistent fatigue or lower energy levels  
• Reduced sex drive  
• Erectile dysfunction  
• Mood changes or irritability  
• Difficulty maintaining muscle mass  
• Decreased strength  
• Changes in sleep quality  
• Increased abdominal weight  
• Difficulty concentrating 

Because these concerns can overlap with other health issues, experiencing one or two symptoms does not automatically mean testosterone is low. A more complete evaluation can help determine whether hormone levels may be contributing. For men considering low testosterone treatment in San Diego, Dr. Fontaine can review both symptoms and laboratory findings rather than relying on either one alone. 

How can hormone optimization for men address low testosterone? 

When testing and symptoms indicate that testosterone levels may be contributing to changes in daily life, hormone optimization for men may focus on restoring hormone levels under medical supervision. Fontaine MD Aesthetics and Anti-Aging Medicine offers several testosterone administration options, including injections, topical creams, and pellet insertion. 

The appropriate method can depend on individual needs, preferences, hormone levels, and health considerations. Rather than assuming each man experiencing fatigue or reduced libido needs testosterone therapy, Dr. Fontaine can evaluate the full picture and discuss which approach may be suitable. 

Restore balance with a closer look at your hormone health 

Changes in energy, strength, sexual health, or mood do not have to be dismissed simply as part of getting older. Understanding what is happening with your hormones can provide valuable insight into symptoms that have gradually become more noticeable. Dr. James D. Fontaine at Fontaine MD Aesthetics and Anti-Aging Medicine can assess your hormone levels, discuss your concerns, and determine whether testosterone therapy in San Diego, CA may fit your needs. Contact us today to schedule a consultation and explore options for supporting healthier hormone balance and long-term well-being.