@kmartfit's low testosterone signs, fact-checked

What did @kmartfit actually say?

The claim is simple and sweeping: three symptoms equal low testosterone, full stop. "If you don't wake up every single morning with morning wood, you have low testosterone," the creator says. Add anxiety, depression, and poor focus to the list, and the diagnosis is apparently sealed. No blood work mentioned. No doctor visit. Just three symptoms and a conclusion.

To be fair, all three symptoms do appear on clinical checklists for hypogonadism. The problem is not what was listed. The problem is the certainty attached to it. Saying "if you have any of those three symptoms, you have low testosterone" is not a nuanced read of the evidence. It is a recruitment pitch for a diagnosis that requires an actual blood test to confirm.

Does the science back this up?

Partially, but the framing strips out most of the important context. Morning erections, mood changes, and cognitive complaints do correlate with low testosterone in some men, but none of them are specific enough to diagnose hypogonadism on their own.

The American Urological Association and the Endocrine Society both require two separate fasting morning total testosterone measurements below 300 ng/dL, plus symptoms, before diagnosing hypogonadism. Symptoms alone do not make the diagnosis. A 2020 review by Mulhall et al. in the Journal of Urology found that symptom questionnaires like the ADAM scale had high sensitivity but very low specificity, meaning lots of men with normal testosterone also screen positive.

On morning erections specifically, a study by Jannini et al. (2014, Journal of Sexual Medicine) found that nocturnal and morning tumescence is influenced by sleep quality, age, alcohol use, cardiovascular health, and nerve function, not just testosterone. Skipping one morning is not a clinical event. Skipping every morning for months may warrant investigation, but even then, the cause could be something other than testosterone.

What did they get wrong (or right)?

Right: These three categories of symptoms do appear in legitimate diagnostic frameworks. The Androgen Deficiency in Aging Males questionnaire includes sexual function changes, mood symptoms, and energy or concentration complaints. Credit where it is due.

Wrong: The absolute certainty is the real problem here. "If you have any of those three symptoms, you have low testosterone" is not how medicine works, and it is not what the studies show. Anxiety and depression are symptoms of dozens of conditions, including thyroid dysfunction, sleep apnea, anemia, and clinical depression itself. Lack of focus shows up in ADHD, poor sleep, metabolic syndrome, and chronic stress.

Conflating symptom presence with a specific hormonal diagnosis without lab confirmation is not just imprecise. It can lead people to seek testosterone treatment when the actual problem is something else entirely. Wu et al. (2010, New England Journal of Medicine) found in the European Male Aging Study that only a subset of men with symptoms had biochemically confirmed low testosterone.

What should you actually know?

If you recognize yourself in these symptoms, that is worth paying attention to. But the appropriate next step is a blood draw, not a TRT inquiry. Total testosterone should be tested in the morning, fasting, on at least two separate occasions. Free testosterone, LH, FSH, and SHBG are often part of a complete picture.

Age matters too. Testosterone declines roughly 1 to 2 percent per year after age 30 (Feldman et al., 2002, Journal of Clinical Endocrinology and Metabolism). Some decline is normal physiology, not pathology requiring treatment.

Morning erections in particular are not a daily checkbox most clinicians rely on. Their absence in isolation, especially after a rough night of sleep or a few drinks, means very little. Persistent absence combined with other symptoms and confirmed low labs is a different conversation.

Short-form content that simplifies diagnosis into a three-item list is not trying to hurt you. But it is optimized for engagement, not clinical accuracy. Use it as a conversation starter with a clinician, not as a conclusion.