Low Libido

Low libido—whether described as poor sexual desire, low arousal, or hypoactive sexual desire disorder—is a common and complex issue affecting both men and women, shaped by environmental, endocrinologic, neurological and psychogenic factors. Libido is not simply wanting sex; it is the subjective energy of the sexual drive, and its disruption is widespread across ages and circumstances.

Sexual dysfunction is influenced by mood, relationships, medications, and systemic health. Physical contributors include low dopamine, low progesterone, low vitamin D, low testosterone, low zinc, atherosclerosis, hypothyroidism, diabetes, cardiovascular disease and many commonly prescribed drugs. Psychological causes range from depression and anxiety to past trauma and stress.

Contrary to common belief, testosterone alone does not reliably dictate libido. While often prescribed, testosterone therapy—especially in women—carries many side effects, and evidence shows plasma testosterone levels correlate poorly with sexual desire. Progesterone, historically underestimated, appears to play a much greater role in sexual behavior and response than typically acknowledged.

Scientific findings challenge the simplistic view that only androgens drive desire. Progesterone is produced not just by the ovaries or testes but also by the brain and adrenal glands, and animal research shows progesterone surges are linked with sexual activity, facilitate behaviour even in the absence of other steroids, and support erection mechanisms. Progesterone receptors also mediate dopamine’s action—a key neurotransmitter for motivation, arousal and ejaculation.

Normal sexual response also depends on nitric oxide (NO), hydrogen sulfide and other vasodilators that enable blood flow to sexual tissues. Progesterone and vitamin D enhance vasodilation and NO production, while adequate dopamine keeps prolactin in check (since high prolactin suppresses libido). Nutrients such as tyrosine, arginine, NAC, magnesium and vitamin K all support these pathways.

Life stages like post-partum and peri-menopause often coincide with low libido, paralleling drops in progesterone even when estrogen and testosterone remain unchanged.

Natural treatment emphasizes restoring progesterone alongside critical nutrients: vitamin D to support dopamine synthesis and testosterone levels; tyrosine to prevent prolactin elevations; arginine and NAC for vascular function; and cofactors like magnesium and vitamin K to maintain arterial health. Consider also herbs with aphrodisiac properties and hormone testing, especially for progesterone, vitamin D and prolactin.

For more information visit our webpage on Low Libido