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Joshua G. Cahan M.D.

@joshuacahan.bsky.social
155 followers 130 following 27 posts

Assistant Professor of Neurology Director of Clinical Translation, Abrams Research Center on Neurogenomics Mesulam Center for Cognitive Neurology and Alzheimer’s Disease Davee Department of Neurology, Feinberg School of Medicine

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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 30/06/2026
One of most concise, cogent, and urgent peices on AI. Reminding us that artificial is in the name for a reason… www.nytimes.com/2026/06/30/o...
nytimes.com
Opinion | The One Very Simple Reason A.I. Won’t Steal All Our Jobs
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 11/01/2026
““[I]t is important to understand this test is designed to rule out the presence of amyloid plaques,” Joanne Pike, DrPH, Alzheimer’s Association president and chief executive… “It is not a test that will give an Alzheimer’s disease diagnosis, nor is it a standalone tool for detection.”
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Dr. Princess Vimentin PhD | Cancer Biologist @princess-vimentin.bsky.social · 29/10/2025
According to @jeremymberg.bsky.social the number of new Alzheimer’s research projects receiving funding this yr is down 49% Fewer projects will be funded as awards will be given in lump sum upfront. This has been shown to lower success rates & stifle innovation. 🧪 beingpatient.com/alzheimers-r...
beingpatient.com
NIH Alzheimer’s Research Funding Is Back — for 49% Fewer Projects
Though the NIH director is calling for $187 million more in funding for Alzheimer’s, the NIH is funding fewer new projects.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 30/10/2025
“To err is human, but to really foul things up you need a computer.”
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Nicholas Grossman @nicholasgrossman.bsky.social · 18/10/2025
I made signs expressing points of disagreement with the government
Guy holding posters of Indiana Jones captioned “Professors: Good; Nazis bad”
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 12/09/2025
Menthol cigarettes for AD? Surprisingly cholinergic effects of nicotine have a more established plausible mechanism. 🤓
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 11/09/2025
When political theory catches up to neuroscience(re: PTSD, conditioning, empathy networks, psychopathy, just to start) political violence will have less support. Rage and trauma and desensitization multiply to disastrous end. Such cycles are hard to stop in individuals and societies alike.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 08/09/2025
He and Marshall Allen are still carrying the torch from a generation of musicians that still bring so much light to the world. To many more. ❤️ 🎂 🎈 🎷
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Catherine Rampell @crampell.bsky.social · 07/09/2025
US health insurers are raising insurance premiums by the most in 15 years. Recall that Trump recently threatened 250% tariffs on pharmaceuticals. GOP lawmakers also chose not to extend the expanded premium tax credits that expire at the end of this year
on.ft.com
Americans face biggest increase in health insurance costs in 15 years
Rising premiums add to pressure on households already feeling the pinch from the high price of goods
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Eric Topol @erictopol.bsky.social · 07/08/2025
At Northwestern Medicine, Super Agers are defined as people aged 80+ with delayed word recall raw scores at least equal to people 20-30 years younger. With 25 year follow-up, what do their brains looks like at post-mortem? alz-journals.onlinelibrary.wiley.com/doi/full/10....
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 07/08/2025
A nice write up on our longstanding Super Ager study, which helped to popularize the term, but more importantly, is yielding fascinating insights into resilience in aging. www.nytimes.com/2025/08/07/w...
nytimes.com
The One Quality Most ‘Super-Agers’ Share
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 06/08/2025
After feeling like garbage for the past week with the fluctuations in air quality, I never knew how acutely and profoundly poor air quality could impact my wellbeing. It is a new dystopian yearly phenomenon in Chicago. Still we are lucky here, more resilient to climate change than others.
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Kathleen Bachynski @bachynski.bsky.social · 06/08/2025
“I don’t think I’ve seen a more dangerous decision in public health in my 50 years in the business,” said Mike Osterholm, a University of Minnesota expert on infectious diseases and pandemic preparations.”
apnews.com
RFK Jr. pulls $500 million in funding for vaccine development
The Department of Health and Human Services plans to cancel contracts and pull funding for some vaccines being developed to fight respiratory viruses like COVID-19 and the flu.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 05/08/2025
A very nice interview with my colleague, Dr. Ian Grant, on the topic of GLP-1 inhibitors and dementia. It’s so rare that journalists publish long form interviews instead of talking points. Take a listen! @nmneurology.bsky.social @wgntv.com wgnradio.com/john-landeck...
wgnradio.com
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 04/08/2025
To describe those who fall pray to mass delusion, it’s no longer “drinking the kool aid” it is henceforth known as “drinking the orange juice”.
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The Allard lab @allard-lab-ucla.bsky.social · 01/08/2025
1/3 It's official, our grants from the NIH/NIEHS have all been suspended. We were aiming to understand how arsenic, a chemical that millions of Americans are exposed to at high levels, is disrupting the epigenetic machinery.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 30/07/2025
Henceforth my poor spelling, no longer a failing, shall be considered a tender mark of a genuine human creation. Evidence that no LLM was used in this writing. ✍️
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Alex Edwards @itsalexjedw.bsky.social · 25/07/2025
First time in Canada and couldn’t imagine a better reason than for #AAIC2025! Find me during the conference walking around in my purple ISTAART Ambassador shirt or at my poster on Sunday. Drop by or reach out if you want to connect! 🍁🧠💜
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Alzheimer's Association @alzassociation.bsky.social · 24/07/2025
Last year, our free 24/7 Helpline (800.272.3900) answered over 223,000 calls and online chats. This impact is possible because of YOU💜 See how you’re helping advance Alzheimer’s research, care, support and advocacy 👉 alz.org/about/our-impact #ENDALZ
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 22/07/2025
He lived a public and courageous battle with Parkinson’s disease, other conditions. The fact that he performed so recently to a stadium of loving fans should be an inspiration to many with chronic illness. Rest in peace to the Prince of Darkness 🦇 ⚰️ 🎸 🤘
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Andreas Brandmaier @brandmaier.bsky.social · 18/07/2025
Finally: Ecologically valid MRI studies. Seen at Max Planck Campus of Cognition #noai
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Randall Munroe @xkcd.com · 10/07/2025
Fix This Sign xkcd.com/3113/
Comic. [Person with ponytail using handheld device in front of a large sign with crooked, off-center header, with crooked QR code (with illegible URL) and crooked list beneath] Header: DOANATE TO FIX THIS SIGN! List: $10 Fix kerning [kerning around “rni” of kerning is difficult to read]; $20 Align Columns [out of alignment] $20 Fix text size [much smaller text size]; $50 Fix typo; $50 Fix centering; $100 fix rotation. PERSON: Grrr… [caption] My new company’s business model is based on extorting graphic designers.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 02/07/2025
Make Subacute Sclerosing Panencephalitis Great Again! (MSSPEGA)
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 02/07/2025
An important lesson for clinicians and caregivers, where you find the humanity you will find light. People with dementia have the same basic joys and fears as the rest of us. Humor, love, nostalgia, beauty are powerful tools.
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Ben Collins @bencollins.bsky.social · 01/07/2025
I got permission to share this, and I'm extremely grateful for that. The Onion got this letter from one of our subscribers in Alaska. She works with dementia patients and decided to leave a copy in the car for each one. This email made my year. Read it and you'll see what I mean. People are good.

I work as an elder and hospice caregiver, which I am oddly passionate about. I can love on them shamelessly and no one complains about my codependence. It's a win-win situation. 

Many of my caregiving colleagues complain about the repetitive questions and, sometimes reactions, of the elderly, especially when those patients happen to read the newspaper, especially with the current downward spiral of our country — as if these people haven't lived through enough horror...

I love my dementia peeps, but sometimes wonder if there's a Guinness Book World Record for how many times an hour a dementia patient can repeat the same question — it's got to be in the hundreds. At least with small children, they ask different questions. Dementia patients will get stuck on one short question and ask it until you can interrupt their train(carousel) of thought and successfully redirect their attention. That carousel is pretty manic sometimes. 

A couple days ago, I picked up my mail from the post office and drove over to the nursing home to take (let's call her "Miss Daisy") Miss Daisy out for a drive. Before we took off on our road trip, to the end of The Road and back, in our landlocked little town (Juneau, Alaska), I set my copy of The Onion down in front of her. 

Over our two-hour excursion, tiny Miss Daisy read that front page at least a dozen times and each time she would snicker, giggle, and guffaw, then put it down on the dash board and, a minute later, discover it anew. I think it was the best afternoon of my life. We don't often hear them laugh and when they do, it's the sweetest thing you've ever heard. 

...

Thank you, thank you, thank you, for the really important work all of you do. You make the world a better place.
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Takaki Komiyama @takakikomiyama.bsky.social · 20/06/2025
Our new paper is out in Science. We identified a subgroup of cholinergic neurons that mediate sensory modality-specific attention. They change their funcitonal properties within secs of behavioral context change. Congrats to Bin for the great thesis, and the team! www.science.org/doi/10.1126/...
science.org
Cholinergic feedback for modality- and context-specific modulation of sensory representations
The brain’s ability to prioritize sensory information is crucial for adaptive behavior, yet its mechanisms remain unclear. We investigated basal forebrain cholinergic neurons modulating olfactory bulb...
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Eric Topol @erictopol.bsky.social · 18/06/2025
"But I am blown away by how much we have learned about Alzheimer’s over the last couple of years."—Bill Gates www.statnews.com/2025/06/17/b... "This is the moment to spend more money on research, not less." Agree 💯 erictopol.substack.com/p/predicting... erictopol.substack.com/p/the-breakt...
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Robert Kelchen @robertkelchen.com · 15/06/2025
This is a good piece (gift link) on how the federal government ghosting Northwestern on congressionally-appropriated funding for three months is affecting the university...and will affect medical research more broadly.
wsj.com
How Trump Blew Up Northwestern’s Business Model
The federal government froze the university’s research funding. It hasn’t offered the school a way to get it back.
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Stand Up for Science! @standupforscience.net · 15/06/2025
🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏🤏 *squinting* We had more people at the Lincoln Memorial for our Stand Up for Science rally on March 7th! #StandUpforScience #FailedBirthdayParade
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WIRED @wired.com · 12/06/2025
yep! unpaywalled:
wired.com
How to Protest Safely in the Age of Surveillance
Law enforcement has more tools than ever to track your movements and access your communications. Here’s how to protect your privacy if you plan to protest.
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Jeremy Berg @jeremymberg.bsky.social · 08/06/2025
More complete analysis of NIH outlays (or lack thereof) from grant-watch.us grant-watch.us/posts/trends...
grant-watch.us
Trends in NIH outlays: Brown, Columbia, Cornell, and Northwestern funding drops to $0 – Grant Watch
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 25/05/2025
I am profoundly grateful and humbled to be among the other inspiring researchers chosen for this award. The SAMBA: Study of Anti-amyloid Monoclonal antibodies and Biospecimens in ARIA aims to elucidate the mechanisms of potentially harmful side-effects of new AD treatment. Excited to get started!
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Stand Up for Science! @standupforscience.net · 18/05/2025
Our goal is to have 1000 SUFS Teach Ins across the US, by 9/30. *GASP* 😮 We know, it's a big goal. If you've received tax dollars for your science, you have a responsibility to inform *your* community what is at stake: public health, the economy, innovation, and America's global leadership.
Host a teach in. Share science with your community....protest style! Calling back to the teach ins of 1965, we are taking to parks, pubs, & churches to tell our neighborhoods about how the budget cuts will impact them.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 11/05/2025
🤷 Sorry guys.
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Seth Trueger @mdaware.org · 08/05/2025
MAHA wants raw milk raw milk can carry enterohemorrhagic E coli (EHEC) EHEC can cause microangiopathic hemolytic anemia (MAHA) MAHA yearns for the MAHA
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 02/05/2025
We and other blacklisted Universities are reporting 0 dollars given from the NIH in April. Having lobbied for the AAN a few times, each time we were told what strong bipartisan support biomedical research funding had. Hope to see more courage from the GOP in coming weeks. Silence is cowardice.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 30/04/2025
People like the Anthropic CEO, even Bill Gates say AI can replace doctors within a decade. It took us many years just to install Epic. And the bloated tech industry with their infinite money hasn’t even solved spell-check. Give me a break. Totally delusional.
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Bloomberg News @bloomberg.com · 29/04/2025
Scientists say the evidence linking climate change to individual companies' emissions is now strong enough to stand up in court.
bloom.bg
Scientists Tally Oil Majors’ Climate Damage With Eye to Legal Liability
New research breaks down economic losses from global warming and attributes them to individual companies. It could bolster lawsuits against big emitters.
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Saganism @sagan.bsky.social · 25/04/2025
It would be very healthy for human species, If there is less Discouragement.
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Prof Jeffrey S Morris @jsm2334.bsky.social · 23/04/2025
It would be scientifically catastrophic to end this decades long study with 42k women continuing to be followed up, providing unique opportunities to learn new insights into women’s health and characterize risk of many health ailments including chronic disease www.science.org/content/arti...
science.org
NIH cancels its first and largest study centered on women
The Women’s Health Initiative has produced numerous influential findings
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Scott Delaney @scott-delaney.bsky.social · 19/04/2025
🙏 We need your help 🙏 The government continues to cancel grants at both NIH and NSF to censor science it doesn't like. We're tracking terminations to organize and advocate. Please report your terminated grants: NIH: forms.gle/J2znQ7y7YpeP... NSF: airtable.com/appGKlSVeXni... w/ @noamross.net
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Die Sankoré-Schriften @sankoreschriften.bsky.social · 16/04/2025
University of Washington’s Alzheimer’s Disease brain bank hangs in the balance. It is preserving more than 4,000 brains for research. #Alzheimer #Brainbank #neuroskyence
nbcnews.com
One of the country's leading Alzheimer's projects is in jeopardy
A pause to NIH funding has researchers scrambling for contingency plans at the University of Washington’s Alzheimer’s Disease Research Center. The center’s brain bank is preserving more than 4,000 bra...
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Stephen Turner @stephenturner.us · 14/04/2025
A benchmarking crisis in biomedical machine learning www.nature.com/articles/s41... 🧬🖥️🧪
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 11/04/2025
Been using AI to transcribe clinic notes, it helps efficiency a bit but there are nuances in cognitive visits that it does poorly with. Im finding it regularly transcribes incorrect information provided by people with no insight. Has no idea who is the reliable historian in the encounter.
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Nature Reviews Neurology @natrevneurol.nature.com · 11/04/2025
ICYMI: New online! Microglia underlie amyloid-β clearance in immunized people with Alzheimer disease
bit.ly
Microglia underlie amyloid-β clearance in immunized people with Alzheimer disease
Nature Reviews Neurology, Published online: 10 April 2025; doi:10.1038/s41582-025-01084-9Microglia underlie amyloid-β clearance in immunized people with Alzheimer disease
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Eric Topol @erictopol.bsky.social · 09/04/2025
When biomedical science and global health face existential threat, by @daltmann.bsky.social @angierasmussen.bsky.social @natrevimmunol.bsky.social www.nature.com/articles/s41... "The attack on some of us is an attack on all of us, and we must stand together."
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 08/04/2025
Bill Gates has stated he thinks AI will replace doctors in 10 years, meanwhile Microsoft Word can’t even get formatting and spell check right decades after its release… and he’s one of the most grounded tech moguls.
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Joshua G. Cahan M.D. @joshuacahan.bsky.social · 02/04/2025
Donanemab appropriate use criteria just came out. Praying insurers may note the recommendations for the new titration schedule, esp for high risk patients. Dumb and reckless to make patients pay out of pocket just to be safer. Waiting for FDA is a fool’s errand. www.sciencedirect.com/science/arti...
sciencedirect.com
Donanemab: Appropriate use recommendations
Donanemab (Kisunla®), an IgG1 monoclonal antibody targeting N-terminal pyroglutamate-modified forms of amyloid-β, is approved in the United States for…
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Joshua Weitz @joshuasweitz.bsky.social · 28/03/2025
Working with an interdisciplinary team, we have developed a website to communicate how the White House's proposed cuts to health research would cause losses of $16B and 68,500 jobs. Find out how your community may be impacted. Explore more at SCIMaP: scienceimpacts.org a 🧵
US map via scienceimpacts.org visualization of economic loss due to IDC cuts to 15% as part of Feb 7, 2025 executive order, with shading denoting intensity of cuts.
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