Male Hypogonadism
Clinically low testosterone — confirmed, not assumed
What it is
Male hypogonadism is the failure to produce adequate testosterone, confirmed by repeatedly low morning fasting levels in a man with consistent symptoms — reduced libido, erectile dysfunction, fatigue, low mood, and loss of muscle and bone. It is classified as primary (the testes fail) or secondary (the pituitary or hypothalamus fails), a distinction made with LH and FSH.
Why it matters
Genuine hypogonadism deserves treatment, and testosterone therapy works. But the far more common clinical situation is a middle-aged man with a single low result, in whom the low testosterone is functional — driven by obesity, obstructive sleep apnoea, opioids, alcohol, or illness — and reversible. Treating the number with testosterone leaves the cause running, and it suppresses fertility. A large commercial market depends on this distinction not being made.
What BioSignal knows about treating this
What works for Male Hypogonadism
BioSignal’s clinical summary, most important first.
- Identify and treat reversible causes first — weight loss, sleep apnoea treatment, opioid reduction
- Testosterone replacement for confirmed hypogonadism (clinician-directed)
- Fertility-preserving alternatives for men who want children — testosterone suppresses sperm production
- Resistance training and weight loss (raise testosterone and improve symptoms)
- Monitoring of haematocrit and PSA on therapy
Signal Records relevant to this condition
Interventions and contributing factors — some of these records describe a cause rather than a cure. The rating shown is BioSignal’s confidence in that Signal Record, not a claim about how well it treats this condition. Open any of them for the full evidence.
- AlcoholHigh confidence
A Group 1 carcinogen with dose-dependent harms. The heart-protection belief does not survive the methods designed to test it. Cutting back helps, even without quitting.
- Testosterone TherapyModerate confidence
Effective for genuine hypogonadism; no established benefit at normal levels. Suppresses fertility. Ask why testosterone is low before treating the number.
- AshwagandhaLimited evidence
The best-evidenced hormone supplement — a modest stress effect. Weak testosterone evidence, and a real liver-injury signal that the label won't mention.
New to this? Read these first
How this usually unfolds
- Recognize risk factors
- Get diagnosed
- Track key biomarkers
- Lifestyle first
- Evidence-based treatment
- Long-term monitoring
Who is at risk
- Obesity (the single largest driver of low testosterone today)
- Obstructive sleep apnoea
- Opioid use (opioid-induced hypogonadism is common and frequently missed)
- Excess alcohol
- Type 2 diabetes and metabolic syndrome
- Type 2 diabetes and chronic illness
- Klinefelter syndrome and testicular injury (primary causes)
- Pituitary disease (secondary causes)
How it's diagnosed
Diagnosis requires BOTH symptoms and at least two low morning, fasting total testosterone measurements — never a single result, since levels vary diurnally and day to day. SHBG must be considered, because obesity lowers SHBG and can make total testosterone look low while free testosterone is normal. LH and FSH then distinguish primary from secondary hypogonadism, and prolactin is checked if secondary.
Key biomarkers
Lifestyle
Explore this condition across BioSignal
Related Foundations
Related Signal Records
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Frequently asked questions
My testosterone came back low. Do I have hypogonadism?
Not on one result. Testosterone varies through the day and from day to day, so diagnosis needs at least two low morning fasting measurements alongside symptoms. SHBG matters too: if you carry excess weight, low SHBG can drag total testosterone down while the active free fraction is normal. Many men are told they are deficient on evidence that doesn't support it.
Why does it matter what's causing my low testosterone?
Because much of it is reversible. Obesity, sleep apnoea, opioids, and heavy drinking all suppress testosterone, and treating those often restores it. Starting testosterone instead treats the number while the cause continues — and it shuts down your own production and your fertility along the way.
Can supplements fix low testosterone?
No supplement has been shown to meaningfully raise testosterone in a healthy man or to treat hypogonadism. Ashwagandha has weak evidence, mostly in stressed or subfertile men. If you genuinely have hypogonadism, the treatment is testosterone under medical supervision. If you don't, the answer is usually weight, sleep, and alcohol.
Evidence summary
Testosterone therapy for confirmed hypogonadism has randomised support for modest improvements in sexual function, mood, bone density, and anaemia, with no cognitive benefit found. The TRAVERSE trial found cardiovascular non-inferiority while observing increased atrial fibrillation, pulmonary embolism, and acute kidney injury. Functional hypogonadism from obesity, sleep apnoea, and opioids is well documented and frequently reversible. No supplement is established to treat it.
References & sources
- Endocrine Society Clinical Practice Guideline: Testosterone Therapy in Men with Hypogonadism
- The Testosterone Trials (T-Trials)
- TRAVERSE cardiovascular safety trial
Educational information — not medical advice
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