Dr. Samer Hattar

Chief and senior investigator at the NIH (Light and Circadian Rhythms)! Personal science Twitter! Works on ipRGCs, thanks to David Berson and Ignacio Provencio.

[Dr. Samer Hattar @SamerHattar]

@hubermanlab Adding ridiculous obstacles for travel is helping no one...

[Dr. Samer Hattar @SamerHattar]

I wish the government knows that at this career stage when I travel to give talks, I am DOING you a FAVOR. I do not give a .... about traveling and wasting my time to present my work and highlight the support. You want to make it hard to travel, then you can kiss my you know what

[Dr. Samer Hattar @SamerHattar]

@hubermanlab

[Dr. Samer Hattar @SamerHattar]

@LaraWeed I did have a quick explanation. I look forward to any questions.

[Dr. Samer Hattar @SamerHattar]

A new paper from my lab. I will have a full description soon. https://t.co/mkQvcXVzsD

[Dr. Samer Hattar @SamerHattar]

Daytime clock stability is enforced at the level of light sensing in the eye!
This reframes how we think about light therapy, shift work, and everyday lighting. The rules are set in the retina, not just the brain.

[Dr. Samer Hattar @SamerHattar]

Why doesn’t normal daylight do this?
Under bright light, ipRGCs enter depolarization block, limiting their ability to signal to the SCN.

[Adam Kinzinger (Slava Ukraini) 🇺🇸🇺🇦 @AdamKinzinger]

Hey guys. Hope you had a nice
Weekend!

[Andrew Kaczynski @KFILE]

I had not seen this Fox News extended interview with Trump from 2024 — where they deliberately edited his Epstein answer — where he won’t commit to releasing the full files because of “phony” stuff in it.

[Dr. Samer Hattar @SamerHattar]

The decency and courage of this man. Love.

[Joe Biden @JoeBiden]

Cancer touches us all. Like so many of you, Jill and I have learned that we are strongest in the broken places. Thank you for lifting us up with love and support.

[Barack Obama @BarackObama]

Happy Mother's Day to all the amazing moms and mother-figures!

@MichelleObama, the girls and I are so lucky to have you in our lives. We love you.

[Dr. Samer Hattar @SamerHattar]

@bimald What they fail to understand is that leaders of biomedical research lead the world, across history. They are seeding power to the communist government of China. All for tax cuts to the super rich. It is nauseating.

[Dr. Samer Hattar @SamerHattar]

@bimald Demoralized is an understatement. I have never seen more people crying and distraught in the hellish 100 days of this administration.

[Dr. Samer Hattar @SamerHattar]

100 days of total chaos and destruction! China is happiest. Voting matters…

[Neil deGrasse Tyson @neiltyson]

Glad to hear that Harvard, my Alma Mater, stood up to the Federal Government in defense of academic freedoms.

It’s a start, but at least their latest declaration aligns with the school’s Latin motto for Truth: “Veritas”. Perhaps other institutions will follow.

[Harvard University @Harvard]

The university will not surrender its independence or relinquish its constitutional rights. Neither Harvard nor any other private university can allow itself to be taken over by the federal government. https://t.co/5k5t9RYYC2

[Barack Obama @BarackObama]

Harvard has set an example for other higher-ed institutions – rejecting an unlawful and ham-handed attempt to stifle academic freedom, while taking concrete steps to make sure all students at Harvard can benefit from an environment of intellectual inquiry, rigorous debate and mutual respect. Let’s hope other institutions follow suit.