Summary
In this live-streamed premium AMA, Huberman begins by detailing the scientific research funded through Huberman Lab Premium in 2023, including gifts to laboratories studying mindsets (Alia Crum), circadian biology and fasting (Satchin Panda), maternal immune effects on fetal brain development (Carla Shatz), novel eating disorder treatments (Joanna Steinglass), and transcranial magnetic stimulation combined with psychedelics for depression and PTSD (Nolan Williams). He announces that 2024 funding will be quadrupled through three additional dollar-for-dollar matching donors.
The Q&A covers several practical topics: the anterior mid-cingulate cortex and how it grows through embracing uncomfortable challenges (linked to 'super agers' who maintain cognitive function); evening light management using dimmable red bulbs to reduce cortisol and protect melatonin levels; strategies for coping with limited morning light in northern regions including bright artificial lights and SAD lamps; key annual health metrics to monitor (blood work panels, body composition, cardiovascular fitness, sleep quality); NSDR protocols for falling back asleep after midnight waking; strength training recommendations for women; and the pros and cons of full-body MRI screening.
Key Points
- The anterior mid-cingulate cortex grows through regularly embracing challenges you would prefer to avoid, and is correlated with 'super agers' who maintain cognitive function into old age
- Dimmable red light bulbs in the evening eliminate blue wavelengths that stimulate cortisol and suppress melatonin, making it significantly easier to fall asleep
- Afternoon sunlight viewing protects against melatonin suppression from bright artificial lights later at night by approximately 50%, based on a study in Science Reports
- For waking in the middle of the night, NSDR or yoga nidra protocols are more effective than trying to force yourself back to sleep through willpower
- Key annual health metrics to track include comprehensive blood panels, body composition (DEXA), cardiovascular fitness markers, and sleep quality trends
- Bright artificial lights or SAD lamps can substitute for morning sunlight during winter months in northern latitudes to maintain circadian rhythm
- Women can build strength without significant hypertrophy by training with heavier weights and lower repetitions (3-5 reps) with longer rest periods
Key Moments
Evening sunlight viewing: 50% protection against late-night light disrupting melatonin
Viewing afternoon/evening sunlight for 5-10 min adjusts retinal sensitivity, protecting against bright artificial light suppressing melatonin later that night by about 50%.
"Bright light viewed for 15 seconds or more between the hours of 10 p.m. and 4 a.m. can dramatically quash melatonin levels."
Red bulbs for evening wind-down: reducing cortisol and blue light before bed
Switching to dimmable red bulbs in the evening eliminates stimulating blue wavelengths, reduces cortisol compared to standard lighting, and promotes sleepiness within an hour.
"I make it much easier to fall asleep, probably because of the reduced cortisol associated with eliminating the blue wavelengths and they tend to be fairly dim."
Evening light protocol: dim lights low, use red bulbs, and triple-click phone filter
Set lights low in the room (overhead light activates alertness), use red bulbs or party lights, and set up a triple-click shortcut on your phone to eliminate blue wavelengths at night.
"I make it much easier to fall asleep, probably because of the reduced cortisol associated with eliminating the blue wavelengths and they tend to be fairly dim."
