Testosterone for women's libido: what the evidence actually shows

What did @drmaryclaire actually say?

In a reply video responding to a comment about low libido, @drmaryclaire made two core claims: that female libido is "more emotional than physical for the most part," and that she was taught essentially nothing about female sexual dysfunction during her residency training. She didn't pitch a product or protocol. She admitted her own knowledge gaps and pointed viewers toward a urologist who specializes in the area. That's a pretty reasonable thing to do.

She also framed low libido as "really complicated" with "not a quick fix for most women." That framing matters because the comment sections of health TikTok are full of people selling exactly the opposite message. No claims about testosterone, no supplement recommendations, no dose talk. Just an honest referral.

Does the science back this up?

The emotional-versus-physical framing is broadly supported, but it's more complicated than a clean split. Yes, the research backs her general direction. But calling it a settled fact oversimplifies an active debate in sexual medicine.

The most widely cited model supporting her claim is Rosemary Basson's circular model of female sexual response (Basson, 2001, Journal of Sex and Marital Therapy), which argues that women often enter sexual encounters from a position of "responsive desire" driven by emotional intimacy rather than spontaneous physical urge. This model has been influential and has shaped how clinicians approach female sexual interest and arousal disorder (FSIAD).

However, critics argue Basson's model has been over-generalized. Brotto et al. (2016, Journal of Sexual Medicine) found that both spontaneous and responsive desire exist across diverse women, and that physical factors, including hormonal status, pelvic floor dysfunction, and medication side effects like SSRIs, contribute substantially to low libido across all age groups. The "emotional-first" framing, while useful clinically, shouldn't be used to dismiss physiological causes out of hand.

What did they get wrong (or right)?

She got the broad strokes right, and her epistemic humility is genuinely refreshing. Saying "I don't consider myself an expert" and then directing people to someone who is? That's exactly what a responsible clinician should do on a platform where overconfidence is the norm.

Where she's slightly off: the phrase "more emotional than physical for the most part" risks becoming a shorthand that dismisses hormonal and physiological contributors. For perimenopausal and postmenopausal women specifically, declining estrogen and testosterone levels have measurable effects on genital blood flow, vaginal tissue, and baseline arousal (Davis et al., 2019, Lancet Diabetes and Endocrinology). Framing libido loss primarily as an emotional problem in a video tagged "menopause" could inadvertently steer viewers away from legitimate hormonal evaluation.

Her point about medical training is, unfortunately, well-documented. A 2019 survey published in Sexual Medicine found that fewer than 30% of OB-GYN residency programs included structured curricula on female sexual dysfunction. She's not alone in that gap.

What should you actually know?

Low libido in women over 35 and through menopause is genuinely multifactorial, and no single explanation covers everyone. The emotional component is real and well-supported. So are the physical ones.

For perimenopausal women especially, hormonal shifts, specifically declining estradiol and testosterone, can reduce genital sensitivity, vaginal lubrication, and baseline sexual interest through direct physiological pathways. These aren't secondary to emotional factors; they can be primary drivers. The distinction matters because the treatment pathways differ. Cognitive and relational approaches work for emotionally rooted low desire. Hormonal evaluation and management, including options like low-dose testosterone therapy, which the FDA has not approved specifically for female libido but which is used off-label with a growing evidence base (Islam et al., 2019, Cochrane Database of Systematic Reviews), may be appropriate when physiology is the driver.

The takeaway: if you're experiencing low libido, a clinician who only asks about your relationship isn't doing the full job. Neither is one who only runs hormone panels. A thorough evaluation covers both.

Should you follow her referral to Dr. Kelly Casperson?

The referral itself is reasonable. Dr. Casperson is a board-certified urologist with documented clinical focus on female sexual health and is a recognized voice in the space. Recommending a specialist over selling a program yourself is the right call. That said, always verify any clinician's credentials, review scope of practice for your specific situation, and treat social media recommendations, even from well-intentioned physicians, as a starting point for research rather than a final answer.