Low Testosterone: Signs You Might Be Missing

There's a common story we hear from men in their 30s, 40s, and 50s: they've gradually lost the energy they used to have. They're gaining weight around the middle despite not eating differently. They're less motivated, less sharp, less interested in sex. They feel like a dimmer version of themselves.

When they mention it to a doctor, they're often told it's just stress, or aging, or depression. Sometimes they're handed an antidepressant prescription.

What frequently goes unasked is: have you checked his testosterone?

Testosterone is the primary male sex hormone, but its role extends far beyond reproduction. It's involved in:

• Energy production and metabolism — testosterone influences mitochondrial function and fat distribution
• Muscle mass and strength — it's the primary anabolic hormone in men
• Bone density — low testosterone accelerates bone loss
• Mood and motivation — testosterone receptors are distributed throughout the brain, including regions governing drive, reward, and emotional regulation
• Cognitive function — memory, focus, and processing speed are all influenced by testosterone
• Cardiovascular health — testosterone has protective effects on the heart and blood vessels
• Red blood cell production — testosterone stimulates erythropoiesis

When testosterone declines, all of these systems are affected — which is why the symptoms of low testosterone are so wide-ranging and often mistaken for other conditions.

Low testosterone (hypogonadism) produces a constellation of symptoms that can develop gradually over years:

• Persistent fatigue that doesn't improve with rest
• Decreased muscle mass and strength, even with regular exercise
• Increased body fat, particularly abdominal fat
• Reduced exercise tolerance and recovery
• Hot flashes or night sweats (less common, but real)
• Decreased bone density (often silent until a fracture occurs)

• Reduced libido (sex drive)
• Erectile dysfunction
• Decreased morning erections
• Reduced ejaculatory volume
• Infertility (in severe cases)

• Low mood, depression, or emotional flatness
• Irritability and reduced stress tolerance
• Decreased motivation and drive
• Brain fog and difficulty concentrating
• Reduced confidence and assertiveness
• Sleep disturbances

• Insulin resistance and metabolic syndrome
• Elevated cholesterol
• Increased cardiovascular risk

Several factors contribute to low testosterone being underdiagnosed:

Gradual onset. Testosterone declines slowly — typically 1–2% per year after age 30. The change is subtle enough that many men don't notice until they're significantly deficient.

Symptom overlap. Fatigue, depression, weight gain, and low libido are common symptoms with many potential causes. Without testing, it's easy to attribute them to stress, aging, or other conditions.

Inadequate testing. A standard testosterone test measures total testosterone — but this doesn't tell the whole story. Free testosterone (the biologically active fraction) can be low even when total testosterone is normal, particularly in men with elevated sex hormone binding globulin (SHBG). A complete evaluation includes total testosterone, free testosterone, SHBG, LH, FSH, and often estradiol.

Reference range limitations. The "normal" range for testosterone is extremely wide — typically 300–1000 ng/dL. A man at 310 ng/dL is technically "normal" but may feel dramatically better at 700 ng/dL. Symptoms matter as much as numbers.

At Roth Family Medicine & Mental Health, we take a comprehensive approach to testosterone evaluation:

1. Detailed symptom assessment — using validated questionnaires and a thorough clinical interview
2. Complete hormone panel — total testosterone (ideally drawn in the morning when levels peak), free testosterone, SHBG, LH, FSH, estradiol, prolactin
3. Metabolic evaluation — blood sugar, lipids, thyroid function, CBC
4. Discussion of goals and expectations — what you want to achieve and what's realistic

We look at the full picture — not just whether your number falls within a reference range, but whether your symptoms and physiology suggest that testosterone optimization would benefit you.

If TRT is appropriate, we discuss the available delivery methods:

• Intramuscular injections — typically weekly or biweekly; the most cost-effective option and allows precise dose adjustment
• Subcutaneous injections — smaller needles, more frequent dosing, very stable levels
• Topical gels or creams — applied daily; convenient but requires care to avoid transfer to partners or children
• Pellet implants — inserted under the skin every 3–6 months; consistent levels without daily or weekly administration

Each method has advantages and trade-offs. We work with you to find the approach that fits your lifestyle and preferences.

Men who respond well to testosterone therapy typically report:

• Significantly improved energy and vitality
• Better mood, motivation, and emotional resilience
• Increased muscle mass and reduced body fat
• Improved libido and sexual function
• Sharper mental clarity and focus
• Better sleep quality

These changes typically develop over 3–6 months as levels stabilize and the body adapts.

TRT requires ongoing monitoring to ensure safety and effectiveness. We check:

• Testosterone levels (total and free) to optimize dosing
• Hematocrit — testosterone stimulates red blood cell production; elevated hematocrit requires dose adjustment
• Estradiol — testosterone converts to estrogen; elevated estradiol can cause side effects
• PSA — for men over 40, prostate health monitoring is standard

We schedule follow-up labs at 6–8 weeks after starting or adjusting therapy, then every 6 months once stable.

TRT is not appropriate for everyone. Men who are actively trying to conceive should discuss fertility-preserving alternatives (such as clomiphene or HCG), as exogenous testosterone suppresses sperm production. Men with certain prostate or cardiovascular conditions require careful evaluation before starting.

The best way to know if TRT is right for you is a thorough evaluation with a provider who takes the time to understand your full picture.

Schedule a hormone evaluation at Roth Family Medicine & Mental Health in Pocatello, or call us at (208) 904-4705.