Summary
In this Huberman Lab Essentials episode, Andrew Huberman explains how to optimize testosterone, estrogen, and related sex steroids for fertility and overall well-being. He covers the sources of these hormones, including the gonads and adrenal glands, and how levels fluctuate with age in both males and females. The episode examines how competition, dopamine, and social context influence testosterone levels.
Huberman details how behaviors like nasal breathing, light exposure, cold and heat exposure, and exercise order (resistance before endurance) affect hormone levels. He discusses sleep apnea's negative impact on testosterone, the role of estrogen in menopause, and supplements like tongkat ali and fadogia agrestis for supporting hormone function, while emphasizing the importance of regular blood testing.
Key Points
- Testosterone and estrogen are produced by gonads and adrenal glands, with levels declining naturally with age
- Competition and winning increase testosterone; expectant fathers and illness decrease it
- Nasal breathing during sleep prevents sleep apnea, which is a major cause of low testosterone
- Morning light exposure supports healthy dopamine and cortisol rhythms tied to hormone production
- Cold exposure to the body (not gonads) can boost testosterone; heat exposure to gonads lowers it
- Performing resistance training before endurance training optimizes the testosterone response to exercise
- Tongkat ali and fadogia agrestis may support hormone levels, but regular blood work is essential for monitoring
Key Moments
Estrogen Metabolism Discussion
Welcome to Huberman Lab Essentials, where we revisit past episodes for the most potent and actionable science-based tools for mental health, physical health, and performance.
"Welcome to Huberman Lab Essentials, where we revisit past episodes for the most potent and actionable science-based tools for mental health, physical health, and performance."
Nasal Breathing: Protocol
Believe it or not, being a nasal breather and avoiding being a mouth breather can actually positively impact hormones, and in particular, the hormones testosterone and estrogen.
"But it does that in part through indirect mechanisms because deep sleep supports the gonads, the ovaries and the testicles, and their turnover of cells and the production of cells."
Cold Exposure: Dopamine
It's fine to wear prescription lenses and contacts.
"It's fine to wear prescription lenses and contacts. If you can't get sunlight for whatever reason, you want to use bright artificial light, but that is absolutely critical for timing the cortisol..."
Resistance Training Discussion
In other words, if you want to optimize testosterone levels, it seems to be the case that weight training first and doing cardio type endurance activity afterward is the right order of business.
"So what's interesting is when you start digging into the more mechanistic studies, what you find is that heavy weight trainings, but not weight training to failure, where completion of a repetition..."
Zone 2 Cardio Discussion
In other words, if you want to optimize testosterone levels, it seems to be the case that weight training first and doing cardio type endurance activity afterward is the right order of business.
"And the takeaway from all of this was that endurance activity, if performed first, leads to decreases in testosterone during the weight training session as compared to the same weight training session done first, followed by endurance activity."
Estrogen Metabolism: Protocol
In males, it's interesting to point out that testosterone is promoting seeking of sex, but it's also estrogen in males that's important for libido.
"So menopause is characterized by a variety of symptoms, things like hot flashes, things like mood swings, things like headaches, in particular migraine headaches. There can be a lot of brain fog. It can be very, very disruptive for people."
