Blue LED lights at night
Thank you for all the information and protocols around sleep! Question: Do blue LED fairy lights disrupt our circadian rhythm the way a bright screen does? Context - I love blue lights at night (slight obsession with the color blue)... it creates a beautiful atmosphere. When I use a light meter app, it doesn't have many lux (1 or 2) so I am hoping that means it wont be too disruptive... but not sure how the wavelength/color impacts the circadian rhythm despite the lux/brightness. More broadly, more questions: when you talk about how light impacts our circadian rhythm, how much of that is the brightness (lux) versus the wavelength (color) and how do natural (sun) versus artificial (fairy lights, light bulbs) lights compare in that context? Does artificial red/blue/yellow lights have the same impact as natural? Or is the different between artificial and nature the intensity/brightness (lux)? Thank you for your interest in humanity Dr Huberman! Love, Ellen
SHBG optimization
Hi! You have covered testosterone on several podcasts and touched upon SHBG and countless medical interventions to rise free T. I have a very high SHBG and therefore low free testosterone in my system. Can you please look at natural lifestyle modification ways to decrease SHBG and therefore have more T in the system? Some ways to detect the causes of high SHBG (my guess too much training in my case) would also be useful and hopefully can steer me and others away from radical testosterone therapy methods. I am a 34 yo male with very active lifestyle with high volume and intensity workouts on the bike and in the gym.
Ignore eye health?
Within 48 hours of experiencing symptoms of flashing lights and floaters in my right eye, I was diagnosed with posterior vitreous detachment and had laser surgery to a hole in my retina caused by the detachment. The ophthalmologist said this was to prevent a detachment of the retina. From what I have read about PVD this can happen to anyone, anytime and that your risks increase with age. I am very vigilant about my health and have no pre-existing medical conditions. As a PSA I would like to remind everyone that if you experience visual disturbances like floaters ( I saw what looked like little worms and ink spots ) and flashes of light, see your optometrist immediately. The sooner the better, since if you do have a retinal tear and don’t get it treated, fluid can accumulate and cause a retinal detachment and cause irreversible vision loss. This is something I did not know and it was only by intuition and my day off work that I had this looked at immediately. From what I understand 1 in 10 experience this. The ophthalmologist did not spend any time discussing any measures of how I can prevent this from occurring again. With proper guidance, I will do everything to prevent this from happening again, since I have read this usually happens to the opposite eye within a year? Also is there anything I can do to speed up the healing of the laser. All that was recommended was rest. Which is very subjective since I am extremely active, play contact sports, lift weights and mountain bike. I am sure that most that are premium subscribers that are reading this post are similar to me, so it is my hopes that everyone is a bit more prepared in case this should happen to them. Thanks so much! Your guidance would be appreciated. Nadine