Andropause vs. hypogonadism: what TikTok gets wrong about male hormones

What did @drnathanspence actually say?

The creator describes andropause as "the gradual drop in testosterone that occurs naturally as men age," citing a 1-3% annual decline in bioavailable testosterone after 30, suggesting men in their 50s have "up to half the levels" they had in their 20s. He then adds a striking generational claim: that today's men have "on average 17% less testosterone than the previous generation."

The video is tagged as an ad, which matters. The framing is educational, but the endpoint is clearly awareness of a condition that a telehealth platform can treat. That commercial context doesn't automatically make the science wrong, but it's worth keeping in mind when evaluating what gets emphasized and what gets left out.

Critically, the creator stops short of recommending testosterone replacement therapy directly. He suggests exercise, diet, and "positive daily changes" instead, which is an unusually restrained finish for content in this category.

Does the science back this up?

Mostly, yes, but the details are messier than the video implies. The 1-3% annual decline figure is broadly supported, but it depends heavily on what you're measuring and how.

The distinction between total testosterone and bioavailable testosterone is real and clinically meaningful. Sex hormone-binding globulin (SHBG) increases with age, binding more testosterone and reducing the free fraction available to tissues. Harman et al. (2001, Journal of Clinical Endocrinology and Metabolism) followed 890 men over 10 years and found free testosterone declined significantly faster than total testosterone with age, lending some support to the creator's emphasis on bioavailable levels.

The 17% generational decline claim traces back to Travison et al. (2007, Journal of Clinical Endocrinology and Metabolism), which found population-level testosterone declines in Massachusetts men that couldn't be explained by aging or BMI alone. That figure is real, though the causes remain debated and include obesity rates, environmental exposures, and lifestyle factors. The creator presents it as established fact without that nuance.

What did they get wrong (or right)?

The "up to half the levels" claim is where things get shaky. It's technically defensible if you cherry-pick the upper end of decline estimates across multiple decades, but it's not a typical finding. Most studies show a 30-50% reduction in free testosterone between ages 25 and 75, not necessarily by the 50s. Presenting the ceiling as the norm is a stretch.

The term "andropause" itself is contested. The British Society for Sexual Medicine and the European Association of Urology prefer "late-onset hypogonadism" or "age-related testosterone deficiency" precisely because the male hormonal decline is gradual and variable, unlike the relatively rapid hormonal shift of female menopause. Calling it "male menopause" is a useful shorthand that also flattens a genuinely different physiological process.

What the creator gets right: the framing that this affects relationships, confidence, and self-perception is consistent with symptom data from Zitzmann et al. (2006, Journal of Clinical Endocrinology and Metabolism), which linked low testosterone to mood and quality-of-life measures in a large European cohort. And the closing advice, exercise and diet rather than an immediate pitch for treatment, is actually responsible for this format.

What should you actually know?

Andropause or late-onset hypogonadism is a real phenomenon, but it is not a universal male experience the way menopause is for women. A significant proportion of men maintain healthy testosterone levels well into older age. Symptoms like fatigue, low libido, and mood changes are common in midlife for dozens of reasons, and low testosterone is only one of them.

If you are experiencing symptoms, a blood test measuring both total and free testosterone, ideally taken in the morning when levels peak, is the appropriate starting point. A single low reading is not sufficient for diagnosis. The Endocrine Society recommends at least two separate measurements before any treatment decision is made.

Lifestyle interventions are not just a consolation prize. Resistance training, sleep optimization, body fat reduction, and reducing alcohol have documented effects on testosterone levels. These are worth pursuing regardless of whether someone ultimately needs medical intervention, and the creator is right to mention them, even if the video's commercial context makes that advice feel slightly like a footnote.