David Shaywitz

Close up of a male Anna's hummingbird hovering. Facing to the left. Wings in front of body. Red throat showing.

Anna's hummingbird. Davis, CA.

Photo taken with Nikon D500, Nikkor 500 mm f/ 5.6.

#birds #hummingbirds

Acorn Woodpecker

Acorn Woodpecker

Woodpecker granary.

Woodpecker granery.

One has to wonder how many bird hours it would require to accomplish this amazing feat. I mean, that's a lot of acorns. 🌰🌰🌰 Peace! ✌️ #birds #woodpeckers #storage

Last graf of my new @luketimmerman.bsky.social TR column on agency in health timmermanreport.com/2026/02/agen...
@nachristakis.bsky.social @alicecallahan.bsky.social @ashishkjha.bsky.social @angeladuckworth.bsky.social

Agency: The Motivational Currency of Health - TimmermanReport.com Last night I offered some remarks at February’s Boston Health Innovation Night, a monthly gathering of innovators, entrepreneurs, and investors in Boston’s extraordinary biomedical ecosystem, organize...

My thoughts on agency as motivational currency of health timmermanreport.com/2026/02/agen... from yesterday's Boston Health Innovation Night organized by Steven Wardell, now posted at Timmerman Report (along w a few pix). @nachristakis.bsky.social @ashishkjha.bsky.social @lisamjarvis.bsky.social

Super excited for this Boston innovation event tonight organized by Steven Wardell; will be sharing a few remarks focused on importance of cultivating agency to enhance health; I view the DPP developed by my clinical diabetes mentor David Nathan at MGH as compelling example. @lisamjarvis.bsky.social

how about a nice game of chess?

Seeking Pockets of Reducibility in Personalized Medicine: Lessons from Google’s AI Health Coach Study - TimmermanReport.com Technologists often imagine a future of health in which AI delivers highly personalized, preemptive guidance, powered by dense, dynamic streams of data. Continuous sensors track physiology and metabol...

Also, you might find this look at the broader challenge of the "science" around the pursuit of precision health interventions interesting -> timmermanreport.com/2025/08/seek... . Most every health platform ostensibly offering (and "now-with AI!")-but actual ability to offer this usu way overstated.

Perhaps not surprisingly (since he was my clinical mentor for the diabetes component of my endocrinology training), I entirely agree w David Nathan's perspective as captured in your excellent piece.

“Food Intelligence”: Make Healthy the Default - In Public Spaces and Private Kitchens - TimmermanReport.com While “nutrition science” often seems to cry out for air quotes around “science,” we are fortunate now to have a new book on the topic written by one of the most thoughtful and deliberate nutrition re...

Hey @lisamjarvis.bsky.social - CGM for non-diabetics seems to be another attractive idea for "precision" better in theory than in practice, as discussed in detail in @kevinh-phd.bsky.social @juliabelluz.bsky.social book "Food Intelligence"; I discussed here -> timmermanreport.com/2025/10/food....

So excited to sharing a few remarks Thursday at Boston Health Innovation Night, on importance of agency in health. Info below...
Co-hosted with Jenny Xie of AgeTech Connect Boston and Tom Arneman of Tyber Edge. Register now to attend. Meet the health innovation community of Boston. t.co/0Yos31IJt8

Longevity Is Having A Moment - TimmermanReport.com Dying, with few exceptions, has never been especially popular, and our shared interest in not dying hardly constitutes breaking news.  Nevertheless, the aspiration of living longer — and remaining hea...

I discussed here -> timmermanreport.com/2025/03/long...

Impt to distinguish betw indefensible extensive assoc w epstein & much of additional critique which includes ton of simmering resentment from jealous aspirational influencers over Attia's outsized success; his bk has issues but also has inspired many productively; useful view of uncertainties/risk.

surprised to hear this - at least where i grew up (SW Connecticut), these birds and chickadees, as i recall, were frequent visitors at our feeders - goldfinch less frequent (before we switched to thistle seed). Recognize having a bird feeder likely anathema to true birders... but great memories.

Happy baby Yoda with the caption "watching the first big winter storm forecast," sad baby Yoda with the caption "watching the second big winter storm forecast"

I enjoy ONE heavy snowfall per winter that melts soon afterward.

ONE.

THAT MELTS SOON AFTERWARD.

Endorse

Almond Orchard. Davis, CA. #orchards #landscapes #centralvalley #yolocounty #sacramentovalley

Great to see @adrianwoolfson.bsky.social clearly living his best life as he discusses what sounds like an incredibly interesting new book he has written about the intersection of biology, genetic engineering, evolution, and AI....

YouTube video by Family Action Network Brad Stulberg and Angela Duckworth, Ph.D. — The Way of Excellence

Lovely invtw of @bradstulberg.bsky.social by @angeladuckworth.bsky.social youtu.be/ug4muImOCxg?si… -remarkable not only for Brad's ever-thoughtful POV, but also Angela's incredibly selfless approach-so many opportunities at which she might have shared her own expertise (at times I wish she did)…

it's not easy breeding deer for gigantism, but that's why I make the big bucks

Reliability of LLMs as medical assistants for the general public: a randomized preregistered study - Nature Medicine In a randomized controlled study involving 1,298 participants from a general sample, performance of humans when assisted by a large language model (LLM) was sensibly inferior to that of the LLM alone ...

Yet another eg (h/t Dr. Caroline Fox) of how map≠territory; fabulous AI models that shine hermetically may fail to improve intended performance in messiness of real world interactions & processes: nature.com/articles/s41... This is healthcare eg, also true for R&D. @andreasbender.bsky.social

A $24 cup of coffee has landed in Boston. Is it worth the price tag? - The Boston Globe George Howell’s exalted brew raises the eternal question of American luxury: When does craftsmanship turn into self-parody?

What a great piece by the @bostonglobe.com’s fantastic feature writer @bethteitell.bsky.social on one of my fav topics: exquisite (& exquisitely pricey) coffee, asking is it really THAT much better & can you really taste the difference? Love how she handled this-> www.bostonglobe.com/2026/02/09/l...

Key section of latest TR column - making sure we're guiding the ever-more powerful technology, rather than redefining our goals based on that tech can most easily do. @katecrawford.bsky.social (who I seem to quote weekly) makes this point w particular eloquence. timmermanreport.com/2026/02/can-...

Can We Ride the GenAI Wave Without Getting Subsumed by It? - TimmermanReport.com “There are decades where nothing happens; and there are weeks where decades happen,” said Lenin, probably never.  It’s also a remarkably apt characterization of the last year in generative AI (genAI) ...

2nd: my new Timmerman Report column marveling at v rapid advances in genAI (incl just last wk alone), suggesting impt oppy to apply to pressing probs incl in HC/LS, as I highlight. But key ?: can we maintain focus on what really matters vs probs AI tackles best? timmermanreport.com/2026/02/can-...

‘A Giant Leap’ Review: Disruption for Doctors Digital innovation in healthcare has proceeded in fits and starts. Will generative artificial intelligence solve more problems than it creates?

Two new pieces on AI & HC. 1st: my @wsj.com review of latest by Dr. Bob Wachter. He expertly+elegantly reviews recent history of attempted tech transformation in healthcare - & the often unexpected consequences, as asks can AI be different (perhaps!). 🎁 www.wsj.com/arts-culture...

and this guy?

🙏 and 100% agree - @luketimmerman.bsky.social is the real deal and somehow manages to cover the space and ecosystem critically but not cynically, believing in the possibility of people and science, and the necessity of data.

Key section of latest TR column - making sure we're guiding the ever-more powerful technology, rather than redefining our goals based on that tech can most easily do. @katecrawford.bsky.social (who I seem to quote weekly) makes this point w particular eloquence. timmermanreport.com/2026/02/can-...

Can We Ride the GenAI Wave Without Getting Subsumed by It? - TimmermanReport.com “There are decades where nothing happens; and there are weeks where decades happen,” said Lenin, probably never.  It’s also a remarkably apt characterization of the last year in generative AI (genAI) ...

Just dropped: my new TR column taking stock of the insane week in genAI, and considering the implications for healthcare - can we leverage these powerful tools without becoming defined by them? timmermanreport.com/2026/02/can-...

‘A Giant Leap’ Review: Disruption for Doctors Digital innovation in healthcare has proceeded in fits and starts. Will generative artificial intelligence solve more problems than it creates?

My latest @wsj.com review: "A Giant Leap"-Dr. Bob Wachter's thoughtful, discerning account of efforts (which often backfired) to improve healthcare thru digital technology, examining the ?:will the AI revolution be different? (he thinks: yes!). www.wsj.com/arts-culture... @adamrodmanmd.bsky.social

Anna's hummingbird sitting on a crepe myrtle seed pod. Red throat and head are visible.

Anna's hummingbird in flight feeding at a lavender flower

Say hello to my little friend #birds