In this Huberman Lab Essentials episode, I explain how to optimize hormones—particularly testosterone, estrogen, and related sex steroids—to enhance fertility and overall well-being. I discuss the sources of testosterone and estrogen and how their levels fluctuate with age in both males and females. I also cover how behaviors such as exercise, cold and heat exposure, light exposure, illness, and breathing patterns affect hormones. Additionally, I examine specific supplements and replacement therapies, highlighting important precautions to consider when adjusting hormone levels. Episode show notes: https://go.hubermanlab.com/srZp7sJ Huberman Lab Essentials are short episodes focused on essential science and protocol takeaways from past full-length Huberman Lab episodes. Watch or listen to the full-length episode: https://youtu.be/qJXKhu5UZwk Watch more Huberman Lab Essentials episodes: https://youtube.com/playlist?list=PLPNW_gerXa4OGNy1yE-W9IX-tPu-tJa7S *Timestamps* 00:00:00 Huberman Lab Essentials; Hormones, Sexual Development 00:01:15 Testosterone & Estrogen Sources & Age, Adrenals 00:03:34 Competition, Males & Testosterone; Dopamine 00:07:56 Testosterone Decreases, Expectant Fathers, Illness 00:09:59 Sleep Apnea, Testosterone, Estrogen, Cortisol, Tool: Nasal Breathing 00:14:25 Dopamine, Cortisol, Fertility, Tool: Light Viewing Behavior 00:16:56 Heat, Cold & Hormone Levels 00:18:39 Resistance & Endurance Training, Testosterone, Tool: Exercise Order 00:20:51 Estrogen, Menopause, Hormone Therapy 00:22:31 Vitamins, Opioids, Supplements, Tongkat Ali, Cancer Risk 00:27:02 Luteinizing Hormone, hCG, Fadogia Agrestis, Tool: Blood Tests 00:31:37 Recap & Key Takeaways Disclaimer & Disclosures: https://www.hubermanlab.com/disclaimer