Jamal Dinkoui

Jamal Dinkoui

Male Sexual Function, Part 2: Libido and Sexual Arousal

Dopamine, prolactin, oxytocin hormones, nutrition and practical options for improving libido and sexual arousal.

Jamal Dinkoui's avatar
Jamal Dinkoui
Oct 15, 2026
∙ Paid

Low libido, loss of attraction to a partner and difficulty becoming aroused can have different causes. Start with what changed and when. Notice whether physical contact still increases arousal.[1]

If libido is normal and the problem is erectile dysfunction, use Part 1.

Dopamine stimulates libido. High prolactin can reduce libido and cause erectile dysfunction, even when testosterone is normal. Oxytocin is involved in arousal and orgasm. Serotonin can delay or speed up ejaculation, depending on the receptors and nerve pathways involved. GABA and certain neurosteroids inhibit nerve activity. Androgens and estrogens support libido, and thyroid function affects both libido and ejaculation.[2, 3, 4, 5, 6, 7, 8]

Contents

  1. Where to start

  2. Food intake, energy and body composition

  3. Daylight, sleep and the body clock

  4. Stress, sexual habits and your relationship

  5. Gut symptoms and inflammation

  6. Testosterone, DHT and estradiol

  7. Prolactin, thyroid and growth-hormone disorders

  8. Neurosteroids: pregnenolone, progesterone and DHEA

  9. Sexual problems during antidepressant treatment

  10. Supporting dopamine production and function

  11. Supplements for libido, energy and sleep

  12. Peptides and drugs acting on the brain

  13. Follow-up

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