Dr. Rigobert Kefferputz

Patient Library / Men's Health / Low Testosterone

Low Testosterone

Testosterone decline is not an inevitable consequence of aging — it has identifiable and addressable causes.

Low testosterone affects an estimated 40% of men over 45 and produces a recognizable cluster of symptoms: fatigue, low motivation, reduced muscle mass, increased belly fat, poor sleep, and declining libido. Most men normalize these changes as aging. Most are wrong — and the majority have modifiable drivers that respond well before hormonal prescribing is needed.

Total T Isn't Enough

Total testosterone can appear normal while free testosterone — the biologically active fraction — is low. SHBG, which binds testosterone and renders it unavailable, is the critical missing piece in most standard panels.

Lifestyle Drives It

Poor sleep, insulin resistance, excess body fat, and chronic stress all directly suppress testosterone. Addressing these factors first can raise levels significantly without prescribing.

Sleep Produces Testosterone

The majority of daily testosterone production occurs during deep sleep. Sleep apnea or consistently poor sleep can reduce testosterone by 10–15% — this single factor is often completely overlooked.

What You Need to Know

Frequently Asked Questions

How I Treat This

These are the services I most commonly draw on when working with low testosterone.

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