TRT Over 60: What Therapy Delivers in Later Life, and What Not

At 68 you sit in front of your doctor because the energy is gone, desire has disappeared and sleep no longer restores anything. The answer is often: "That is just age." It is half right, and that half is what makes this difficult.

Because it is true that testosterone declines slowly over the years. It is not true that a treatment indication follows automatically, nor that therapy brings back everything that has been lost. Few age groups have data this good, and the data are more nuanced than either camp claims.

The trials that examined this systematically

Between 2016 and 2017 a series of studies addressed exactly this question. They enrolled 790 men aged 65 and over with a testosterone level below 275 ng/dL and symptoms consistent with a deficiency. For one year they received either testosterone gel or placebo gel [1].

Treatment raised testosterone into the mid-normal range for men aged 19 to 40. What followed from that was examined in separate substudies, and the results are pleasingly clear in both directions.

What measurably improved

The walking result carries a caveat: the difference was significant when participants from all three substudies were pooled, but not within the physical function trial alone [1]. That is an indication, not proof.

The bone figures are the most striking part. A 7.5 percent gain in trabecular density within a year is substantial, and estimated strength rose further still [2]. What the study could not show, being too small and too short for it, is whether fewer fractures follow. The authors say so explicitly.

The benefit almost nobody expects

One substudy addressed anemia, which is common in later life and often remains without an identifiable cause. Among men with such unexplained anemia, 58.3 percent were no longer anemic after a year, against 22.2 percent on placebo. A rise in hemoglobin of at least 1.0 g/dL was achieved by 54 against 15 percent, and in anemia with a known cause the testosterone group also led, 52 against 19 percent [7].

What is notable is that the same mechanism that helps here causes trouble elsewhere: testosterone stimulates red cell production. In an anemic 75-year-old that is a gain; in a man whose hematocrit is already high it is a risk. Fittingly, in the same study six men who were not anemic at baseline reached a hemoglobin above 17.5 g/dL [7].

The authors therefore suggest measuring testosterone in men aged 65 and over who have unexplained anemia and symptoms of deficiency [7]. Whether an overall health benefit follows remains open.

What did not improve

Two results contradict what is advertised online, and they are every bit as robust as the good ones.

Vitality and fatigue. On fatigue, measured with an established questionnaire, there was no benefit [1]. That is remarkable, because exhaustion is the most common reason older men come to the consultation in the first place.

Memory and cognition. A dedicated substudy examined 493 men with age-associated memory impairment, mean age 72. After one year there was no difference in delayed recall, visual memory, executive function or spatial ability [3].

Anyone starting therapy in order to think more clearly should know this. On current evidence, that expectation will not be met.

The finding that calls for caution

A further substudy used computed tomography to look at the coronary arteries. Among 138 men, mean age 71, half of whom already had marked calcification, the volume of non-calcified plaque increased more on testosterone than on placebo: the estimated difference was 41 cubic millimetres [4].

No major adverse cardiac events occurred in either group, and the authors wrote explicitly that larger studies were needed to understand the clinical significance of the finding [4].

That larger study now exists. TRAVERSE followed 5,246 men with cardiovascular disease or elevated risk for an average of 33 months and found no inferiority to placebo on the primary endpoint of cardiovascular death, heart attack and stroke, 7.0 against 7.3 percent. More frequent were atrial fibrillation, acute kidney injury and pulmonary embolism [5].

Read together: an intermediate marker worsened in 138 men over one year; the hard endpoints in 5,246 men over nearly three years did not. That is reassuring, but not a blank cheque. A man with established coronary disease belongs under cardiological co-management on this therapy, and the finding belongs in the consent conversation.

Why diagnosis is harder in later life

Three reasons why older men are more often misclassified:

The symptoms are unspecific. Fatigue, low drive and muscle loss fit anemia, thyroid disorders, heart failure, depression and simply too little movement just as well. Symptoms alone are not enough.

SHBG rises with age. This transport protein binds most of the testosterone. As it rises, total testosterone can look normal while the free, active fraction sits too low. That is why free testosterone belongs in the panel for older men [6].

Medication has a say. Opioids and glucocorticoids lower testosterone markedly, and both are widespread in this age group. The medication list belongs in the assessment.

The basis remains the same: two morning measurements on different days, fasting, plus matching symptoms [6]. What else belongs in the laboratory panel is covered in TRT blood work. And because fatigue in later life often comes from sleep, a look at possible sleep apnea is worthwhile, see testosterone and sleep.

What this means for monitoring

In this age group the emphasis of monitoring shifts:

1. Hematocrit more closely. The rise is the most common side effect, and older men more often have comorbidities that drive it further. See hematocrit and TRT.
2. PSA and prostate. History and baseline value decide whether urological assessment is needed before starting. See TRT and the prostate.
3. Cardiovascular in view. Blood pressure, rhythm, and where disease exists, cardiological co-management [4][5].

How to decide realistically

The honest summary for a man over 60: therapy can clearly improve sexual function, mood somewhat, and it strengthens bone measurably. It will probably not resolve fatigue, and on current evidence it will not improve memory at all [1][3].

That is not an argument against treatment. It is an argument for starting it for the right reason. A man treated for declining sexual function with a confirmed deficiency has good prospects. A man expecting it to take twenty years off the clock will be disappointed.

Whether your symptoms fit a deficiency at all is something the online self-test can indicate. The distinction is more demanding in later life than in younger men and belongs in a conversation, which telemedicine makes possible without travel.

FAQ

Is testosterone therapy still worth it over 65?

With a confirmed deficiency and matching symptoms, yes, with realistic expectations. In the trial of 790 men aged 65 and over, sexual activity, desire and erectile function improved clearly, mood and depressive symptoms slightly [1], and spine bone density rose by 7.5 percent [2].

Does testosterone help fatigue in later life?

On the best available evidence, no. On vitality, measured with an established fatigue questionnaire, there was no benefit over placebo [1]. If fatigue is your main problem, other causes belong investigated first.

Does testosterone improve memory?

No. Among 493 men with age-associated memory impairment there was no difference after one year in delayed recall, visual memory, executive function or spatial ability [3].

Is the therapy dangerous for my heart?

The evidence is two-sided and reassuring on balance. In 138 older men, non-calcified plaque volume increased more on testosterone over one year [4]. In 5,246 men at cardiovascular risk, testosterone was not inferior on the primary endpoint of cardiovascular death, heart attack and stroke over nearly three years [5]. With existing heart disease, treatment belongs under cardiological supervision.

My total testosterone is normal but I have all the symptoms. Now what?

Then free testosterone belongs measured. SHBG rises with age, which can make the total look normal while the active fraction is too low [6]. It is also worth reviewing medication such as opioids and glucocorticoids, which lower the level.

Further Reading

• TRT and the prostate: what your PSA tells you
• Hematocrit and TRT: when the number matters
• Testosterone and sleep: what the night does to your level