Olivia Walch

Cancer watch: an actigraphy device

@mariafelicita.bsky.social @erikherzog.bsky.social @oliviawalch.bsky.social & team establish a real-time, non-invasive monitoring tool for glioblastoma progression based on activity, enabling early progression detection: doi.org/10.1172/jci....

Timing may be key to effective cancer treatments Researchers at Washington University in St. Louis find the timing of biopsy can affect how doctors diagnose tumors and when those cancers may be more sensitive to chemotherapy.

Dosing on the way down improves outcomes for glioblastoma. Thanks Maddy Frank for covering this collaboration with @oliviawalch.bsky.social and WashU grad student @mariafelicita.bsky.social. #chronotherapy #circadian #medicine source.washu.edu/2025/11/timi...

Me doing my best to regulate my body clock using that sweet sweet Florida sunshine!
Thanks again @oliviawalch.bsky.social for the time and the chat for @smbmathbiology.bsky.social's podcast #BiologyInNumbers. It was super cool learning about your work @arcascope.bsky.social ⏰☀️💊

#scicomm

Really enjoyed chatting with @parmvir.com on the Biology in Numbers podcast! Thanks for having me. open.spotify.com/episode/2oIC...

😍 looks amazing!

Comparison photos of autumn mornings at 7:00 on Standard Time (sunlit skies) versus Daylight Saving Time (dark skies) from California (Pacific Time), Utah (Mountain Time), Missouri (Central Time), and Georgia (Eastern Time).

Permanent Standard Time would let us sleep naturally past dawn. Daylight Saving Time makes us wake by alarm in darkness. Tell lawmakers to ditch DST! 🔗👇

Very excited for this to come out! Awesome work by @mariafelicita.bsky.social

Digital Twins in Heart, Lung, Blood, and Sleep Research Virtual Workshop The Digital Twins in Heart, Lung, Blood, and Sleep Research Virtual Workshop will take place virtually on September 25–26, 2025.

Very excited to speak about circadian digital twins at this workshop today and tomorrow! www.nhlbi.nih.gov/events/2025/...

Your liver can tell time!

bsky.app/profile/oliv...

Science fan comic for cool work from Dr. Sandra March in the Bhatia lab at MIT/HHMI on building in vitro liver clocks to understand rhythms in infection and drug metabolism 💕https://www.science.org/doi/10.1126/sciadv.adm9281

Today! Download Arcashift to join our July-only circadian light + activity challenge to help Sol (cute lil sun mascot) get his groove back ☀️🌞☀️ arcascope.com/arcashift/

wowowow!

😍

Support indie and small press cartoonists through buying their art!

Full-color cover illustration for upcoming graphic novel Creaky Acres, by Calista Brill and Nilah Magruder. A 10-year-old Black girl wearing black helmet, black blazer, tan riding pants, and black boots sits astride a light brown horse. The girl is smiling at camera. The horse looks up at the girl fondly.

Creaky Acres is out today! At last, you can now find it at your nearest indie bookstore or library. And if you can't, tell them you want it! @calistabrill.bsky.social #graphicnovels #comics #kidlit #kidlitart

www.penguinrandomhouse.com/books/558467...

Had a ton of fun chatting with my friend Rosy on Science of Slink about SLEEP GROOVE + why sleep regularity is so important

MercoPress Senator Wants Paraguay to Revert to Winter Time (GMT—4) April 28, 2025 Paraguayan Senator Blanca Ovelar plans to introduce a bill to revert the country's time zone to GMT-4 year-round from the current permanent summer time (GMT-3) adopted recently. Ovelar argues that the summer time is harmful, forcing students, teachers, and workers to start their day in darkness, which disrupts natural circadian rhythms. She claims that winter time aligns better with Paraguay’s geographical meridian and aims to correct the “legislative mistake” of the law currently in force. The proposal seeks to implement the change immediately after enactment. The issue has sparked debate, with some advocating for staggered schedules for public officials and students as an alternative solution. Ovelar, of the ruling ANR Colorado Party, insisted the current shift was a legislative mistake. The measure had negative consequences for the population, she further argued, claiming that many fellow…

Paraguay recently adopted permanent Daylight Saving Time. Less than a year later, citizens demand permanent Standard Time, to restore morning sunlight.

Next up in our Meet the Board series is SLRCH Vice President, Renske Lok @renskelokphd.bsky.social 🌟✨

Today is the LAST DAY to submit your abstract for SLRCH 2025 in Boston! We can't wait to see you there 🤩 slrch2025.exordo.com/login

moms 🤝 fridge

www.theatlantic.com/family/archi...

Video of a student in my town who wrote a political op-ed being grabbed off the street by government agents bsky.app/profile/pale...

Digital twin is a term that means ten different things to ten different people. For our app, Arcashift, "sleep + circadian digital twin" means:
- we have a system of differential equations that acts like your brain acts in response to light and other stimuli
- and also a cute character builder

Personalized App Reduces Cancer-Related Fatigue | Newswise U-M researchers, in collaboration with Arcascope, have developed and tested a personalized app that tracks a user’s circadian rhythm and makes behavioral recommendations to reduce daily fatigue.

Cancer-related fatigue is tough—but it doesn’t have to be.
A new study with @UMRogelCancer shows our personalized circadian rhythm app, Arcasync, can reduce daily fatigue in cancer patients. Published in Cell Reports Medicine: www.newswise.com/articles/per...
#CircadianHealth #CancerCare

We've also made it super easy to export data directly from the app for use in research studies (or just to play around with).

Lots of fun stuff on the horizon, including jet lag, so stay tuned. In the meantime, download Arcashift on iOS/Android here: arcascope.com/arcashift/

5. Avatars, baby: Make your digital twin look like you and watch as they get sleepier when your rhythm's off (I live for this)

4. For the real nerds: Actograms, DLMO time predictions, and graphical depictions of phase advance and delay regions

3. Sleep Insights: See how activities during the day (or in my case, lack of activities) might be affecting your sleep at night so you can proactively fix things tomorrow

2. Nap Planner: Find best times for a nap today based on your real-time data

1. Track your circadian alignment as you adjust to a new wake-up goal (+ embrace early bird life)

So proud of the team at @arcascope.bsky.social for all the new stuff we've gotten into Arcashift, our circadian-rhythms-everything app.

Here's 5 features you might not know about that are either out right now, or coming in the next release:

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