Podbit · Huberman Lab
Low-dose tadalafil (2.5–5 mg/day) supports prostate health, boosts blood flow, increases androgen receptor density (like L-carnitine does), and cuts nighttime urination episodes in half — improving sleep, which in turn raises growth hormone and testosterone.
Where this was said
At 36:08 · chapter starts 34:56
A tightly packed segment on alcohol unpacks its triple threat to testosterone. First, the aromatase connection: alcohol significantly and dose-dependently up-regulates aromatase, the enzyme that converts testosterone into estrogen. Second, the neurological angle: alcohol is highly GABAergic, activating inhibitory neurotransmission in a way that suppresses LH and FSH release from the pituitary — a mechanism Gillett explicitly compares to opiates. Third, the metabolic hit: at 7 kilocalories per gram, alcohol carries nearly the caloric load of fat (9 kcal/g), adding to body fat accumulation that further amplifies aromatase. Gillett's practical recommendation is no more than 3–4 standard drinks per two weeks — and notes that one large glass of wine likely counts as about 5 standard drinks.
Alcohol significantly increases aromatase activity, converting testosterone to estrogen. It's also highly GABAergic, suppressing LH and FSH release much like opiates do. And at 7 kcal/gram, it's nearly as calorie-dense as fat. Dr. Gillett recommends no more than 3–4 standard drinks per two weeks.
Alcohol significantly increases aromatase (converting testosterone to estrogen) and is GABAergic, reducing LH and FSH; Gillett recommends no more than 3–4 standard drinks per two weeks.
Self-help fails because people are sold one universal cure by the hyper-responders who had a transformative result from it. The real problem is context: every method works for the right person at the right time, which is almost never you just because the author says so.
Spencer Greenberg was once so socially anxious his heart pounded just approaching a stranger. His therapist gave him homework: go to a bar alone, talk to 5 strangers. Starting with asking for the time, he worked up to asking men for hugs — and his anxiety fell dramatically in 6 months.
A person who flies regularly but obsessively checks weather forecasts before every flight is not doing exposure therapy — they're teaching their brain that flying is only safe with the ritual. Safety behaviors prevent the brain from ever learning that the feared thing is actually fine.
The worry-time technique assigns all worries to one scheduled slot (e.g. 5 PM). Every time a worry surfaces, you write it down and ban yourself from engaging with it until that time. When 5 PM arrives, most worries feel trivial and the act of batch-worrying exposes how little it actually accomplishes.
In a randomized study of 20 habit techniques, 'habit reflection' stood out: recall a past habit you successfully built, write down what helped you succeed, then apply those same strategies to your new habit. It works because it's self-adapting — it uses whatever worked for YOU.
The tiny habits technique — always having a minimal version of your habit you can do when life gets in the way — keeps the mental machinery of habit formation from breaking. Paradoxically, people given a tiny-habit fallback option were MORE successful at the full habit, not less.
Fears and worries act like playground bullies — they want to ambush you. But when you deliberately seek them out and choose the time of engagement, they lose their power. The volitional act of starting the fight on your own terms is one of CBT's most underappreciated insights.
Most downtime defaults are things you regret immediately after — phone scrolling, binge TV. 'Glad you did it' activities meet the same need for rest but leave you feeling like you spent your time well. The switch from a bad screen to a documentary, a book, or a walk costs almost no extra effort but compounds into identity over time.
You rarely control your first reactive thought. But you can train your second thought — the response to the trigger — by asking whether your initial reaction is the most helpful one and replacing it with something equally true but more constructive. Over time, that second thought becomes automatic.
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