Low libido causes: what a TikTok MD is likely getting right and wrong

What's this video probably claiming?

Based on the caption, hashtags, and the creator's apparent TRT-adjacent framing, @joshuagonzalezmd is likely walking through a list of common low libido causes: low testosterone, stress, sleep deprivation, relationship issues, medications (particularly SSRIs and beta-blockers), and possibly thyroid dysfunction. Given the erectile dysfunction hashtag alongside the libido one, there's a reasonable chance he's conflating the two conditions or presenting them as a package, which is a common shortcut in short-form medical content. Creators in the DoctorTok space who lean toward hormone optimization tend to weight testosterone deficiency more heavily than the evidence strictly supports relative to the full differential. The TRT category tag on this video is a tell. This is probably not a neutral educational video. It's probably moving the viewer toward thinking about testosterone.

What does the science actually show?

Low libido, clinically called hypoactive sexual desire disorder (HSDD) in women or simply low sexual desire in men, is genuinely multifactorial. Testosterone does play a role. A 2016 meta-analysis by corona et al. in the Journal of Sexual Medicine found that testosterone therapy in hypogonadal men improved sexual desire scores, but the effect size was modest and depended heavily on baseline testosterone levels. Men with total testosterone above 300 ng/dL showed substantially smaller benefits. Stress and poor sleep are not runner-up causes: a 2015 study by Khoo et al. in the Journal of Clinical Endocrinology found that sleep restriction to 5 hours per night dropped testosterone by 10-15% in healthy young men after just one week. SSRIs cause sexual dysfunction, including reduced desire, in 30-40% of patients according to a 2009 review by Clayton et al. in Psychiatric Clinics of North America. Thyroid dysfunction, both hypo and hyperthyroid states, is a frequently missed libido disruptor. The point is: testosterone is one node in a complex system, not the master switch.

Where does the social media noise diverge from clinical reality?

The problem with DoctorTok libido content is the funnel. A physician with a TRT-friendly brand has a structural incentive to anchor the viewer on testosterone as the primary cause. That framing is not supported by population-level data. The Massachusetts Male Aging Study found that while free testosterone does correlate with sexual desire, the association weakens substantially after controlling for general health, depression, and relationship satisfaction. Depression is probably the most underrepresented cause in these videos. A 2021 review by Atlantis and Sullivan in the Journal of Sexual Medicine found bidirectional relationships between testosterone and depression, meaning low mood suppresses testosterone AND low testosterone worsens mood, but social media creators rarely address the psychiatric differential with the same energy they give to hormone panels. Relationship quality, body image, and trauma history rarely make the thumbnail. They should.

What should you actually know?

If you're watching a 60-second video about your libido and walking away thinking you need a testosterone test, that's not necessarily wrong, but it's probably incomplete. A real clinical workup for low libido includes a full metabolic panel, thyroid function tests (TSH, free T4), prolactin levels (elevated prolactin is a surprisingly common and fixable libido killer, often from a pituitary microadenoma), a medication review, depression screening, and yes, total and free testosterone. The Endocrine Society guidelines recommend confirming hypogonadism with two morning testosterone measurements before initiating TRT. Normal range is typically 300-1000 ng/dL for adult men, with labs varying slightly. Low libido with normal testosterone almost never responds to TRT in controlled trials. If this video nudges you toward a telehealth intake, that's not inherently bad, but make sure the platform is doing the full workup, not just checking a testosterone box.