SHBG (Sex Hormone-Binding Globulin)

Testosterone

The primary anabolic hormone — its natural level depends heavily on sleep, resistance training, body composition and fat mass.

Hypogonadism — Diagnosis and Criteria for TRT Eligibility

Not every low testosterone result means hypogonadism requiring treatment. We explain which laboratory and symptomatic criteria must be met before TRT becomes a justified option.

Andropause

A gradual decline in testosterone in middle-aged and older men, far milder than menopause — a real physiological phenomenon, but one that requires intervention less often than the popular understanding of the term suggests.

Can High SHBG Cause Symptoms of Testosterone Deficiency?

Yes — high SHBG can produce a fully symptomatic picture of testosterone deficiency, even when the total testosterone result looks normal. We explain why symptoms should lead to checking free testosterone, not to dismissing the diagnosis.

How to Interpret Testosterone, SHBG, and Albumin Together?

Total testosterone and SHBG alone say less than the two combined with albumin. We explain the Vermeulen equation — the mathematical way to calculate free and bioavailable testosterone from all three values at once.

Total vs. Free Testosterone — Which Result Actually Matters?

Two men with identical total testosterone can have completely different amounts of biologically available hormone. We explain when free testosterone genuinely changes the clinical picture, when it's an unnecessary expense — and why the measurement method matters just as much as the number itself.

SHBG and Testosterone — What Does a High or Low SHBG Level Mean?

The same total testosterone result can mean completely different things in two different people — it all depends on whether their SHBG is high, low, or normal. We explain exactly what raises and lowers SHBG and how to read both results together.

Low SHBG With Normal Testosterone – What Does It Mean?

Yes, low SHBG with a normal total testosterone result is a common and fully explainable combination. We briefly explain what it means clinically and the most common causes of low SHBG.

Normal Testosterone, But You Feel Awful — Could You Still Have Hypogonadism?

A testosterone result that comes back "in range" on a lab printout doesn't always mean everything is hormonally fine — but it doesn't automatically mean you have hypogonadism either. We explain four real explanations for this mismatch, ranked by strength of evidence.

August 15, 2026

Low Libido Despite Normal Testosterone — How Is That Possible?

Your blood test comes back normal, yet your sex drive is still noticeably lower than it used to be. It's one of the more frustrating situations in the clinic — because intuitively we expect "normal testosterone" to close the case. We explain which other hormonal, drug-related, and psychological mechanisms are worth checking before you decide the result doesn't make sense.

September 25, 2026

Can Diet Affect Acne and Libido at the Same Time?

Acne after your twenties and a drop in libido look like two completely unrelated problems — yet what you eat can genuinely affect both at once. We explain why a diet high in refined sugar and dairy is linked to more frequent acne, how that same insulin mechanism touches SHBG and testosterone availability, and where solid science ends and internet oversimplification begins.

September 25, 2026

Hair Loss, Acne, and Libido — Do They Share a Common Root Cause?

A receding hairline, stubborn acne, and swings in libido look like three separate problems — but in many men they're connected by one biological axis: testosterone, the enzyme 5-alpha-reductase, and the androgen receptor. We show how this axis genuinely links three seemingly unrelated symptoms, without repeating details we've already covered in our hair-loss articles.

September 25, 2026