Good morning!
Are you pro-smartwatch data or anti-smartwatch data? A new AMA survey suggests most physicians are somewhere more complicated: interested, but not exactly ready. Across 6 countries, including Canada, doctors see real clinical value in wearable data, but almost no one has actually built it into their workflow. In Canada, 83% of physicians personally use wearables and 70% see a clinical advantage for patient care, yet only 4% have integrated the data into clinical workflows. What matters isn’t whether the tech works, it’s whether the data is accurate, billable, legally safe, and easy to use. The watch may be ready for clinic, even if the clinic isn’t ready for the watch.
Today’s issue takes 5 minutes to read. Only got 1? Here’s what to know:
-
🩸Skipping vitamin K comes with bleeding risk
-
🥗 Ecolabels nudge greener lunch orders
-
🌡️ Heat may reach the developing brain
-
🧠 Sweeteners get a memory warning
-
⚖️ Taco Bell’s lettuce problem gets legal
-
🤖 OpenAI plans a screenless AI companion
Let’s get into it.
Staying #Up2Date 🚨
1: Does Skipping Vitamin K Come With A Cost?
A cohort study of 2 million infants assessed rates of parental refusal of vitamin K prophylaxis and whether this had an impact on bleeding diagnoses during infancy. The number of infants who had no record of receiving the injection more than doubled from 2006 (0.66%) to 2021 (1.50%). Notably, infants without vitamin K administration had 1.5x higher odds of bleeding and 3x higher odds of intracranial bleeding (aOR; 95% CI, 2.13-3.96) during infancy when compared to those who received IM vitamin K at birth. These results highlight the significance of continued education for parents and healthcare providers about the evidence behind newborn prophylactic vitamin K and the risks that come with refusal.
2: Can a Label Change What You Pick for Lunch?
An RCT of 6,210 adults looked at the effects of putting “ecolabels” on restaurant menus to promote healthy and sustainable choices. Using a traffic-light label to designate choices as red, yellow, or green depending on the item’s impact on greenhouse gas emissions, individuals ended up making selections with 30% lower greenhouse gas emissions from a sandwich restaurant and 15% lower at a burger restaurant. These ecolabels could be an effective and scalable strategy to promote more sustainable choices from fast-food restaurants – for both population and planetary health.
3: Laparoscopic vs Robotic Approach to Complex Elective Cholecystectomy
A cohort study of 863 patients found that those who underwent robotic surgery for complex elective cholecystectomy had fewer postoperative complications and follow-up procedures, such as endoscopic retrograde cholangiopancreatography (ERCP). While the operating room costs of robotic cases were higher compared to the laparoscopic approach, overall cost of care – when including management of post-operative complications – was similar. These findings suggest that robotic cholecystectomy is worth the price!
The Thalamus Takes the Heat 🥵
The forecast may matter earlier than expected
What happened: As heat waves become harder to ignore, researchers say early-life heat exposure may have lasting effects on children’s brain development.
Why it matters: A new study in Environment International linked exposure to high temperatures during pregnancy and early childhood with slower growth of the thalamus, a brain region involved in processing sensory and motor information. The findings land as parts of Canada continue to see extreme summer temperatures, adding another layer to the health risks of heat.

The study followed more than 3,200 children from the Netherlands’ Generation R cohort. Researchers estimated outdoor temperatures during pregnancy and from birth to age 8.5, then analyzed MRI scans taken when the children were 10 and 14 years old. They measured the volume of 11 brain structures over time to see whether earlier exposure to heat or cold was associated with later brain development.
But: The study does not prove heat directly changes brain development, and it looked at outdoor temperatures rather than each child’s exact personal exposure. Still, the thalamus was the only brain region that consistently showed a connection with early heat exposure. Researchers say it may be especially sensitive because it develops early in pregnancy and has a rich blood supply.
Bottom line: Heat warnings may need a longer timeline. For pregnant people, infants, and young children, staying cool and out of extreme temperatures may matter well beyond the day’s forecast.
Hot Off The Press 🔥

1:🥤Think twice before reaching for that diet soda to power through your chart notes. A new study published in Neurology followed nearly 13,000 adults over 8 years and found that high consumers of popular artificial sweeteners – like aspartame, erythritol, and xylitol – experienced a 62% faster decline in thinking and memory skills. That gap equals roughly 1.6 extra years of brain aging, with the strongest associations popping up in adults under 60 and those with diabetes. Before you purge the breakroom fridge, keep in mind the study was observational and relied on self-reported diets, it doesn’t prove direct causation. Still, it might make you hesitate before tearing open that artificial sweetener packet.
2: 🌮 A string of lawsuits has been filed against Taco Bell, its supplier Taylor Farms, and several franchisees following a massive multi-state Cyclospora outbreak in the US. American health officials traced the diarrhea-causing parasite back to contaminated Mexican-grown shredded iceberg lettuce served at restaurants across several states, prompting lawsuits, supply chain overhauls, and a whole lot of bad press. For Canadian readers craving a Crunchwrap, you can breathe a sigh of relief: Taco Bell Canada confirmed that the tainted supply chain never crossed the border, and public health officials report no linked outbreaks here at home.
3: 🌲 Talk about cross-border hospitality. Members of the Royal Canadian Air Force came to the rescue of 11 Minnesota teenagers and staff members who found themselves trapped by raging wildfires in Ontario’s Wabakimi Provincial Park. After spending nearly 48 hours hunkered down waiting for smoke and wind to clear, the YMCA campers (ranging in age from 16 to 18) were successfully evacuated via RCAF plane and helicopter in coordination with local authorities. Minnesota Governor Tim Walz expressed deep gratitude to the Canadian military, emphasizing that swift international teamwork made all the difference in bringing the group home safely from an incredibly dangerous situation.
4: 🍁 Just when trade talks seemed quiet, US President Donald Trump is threatening a new 50% tariff on selected Canadian exports, ranging from wine and dairy to hockey gear and down jackets. While the White House claims it’s retaliating against provincial booze bans and trade barriers, analysts say it’s really about stripping Canada’s leverage ahead of CUSMA renegotiations. With vital energy and auto parts notably left off the hit list to protect US consumers, Canadian officials are left navigating yet another high-stakes game of trade hardball.
5: 🤖 Apparently in an attempt to bring another Black Mirror episode to life, OpenAI is reportedly planning a self-learning, screenless AI companion, expected to be unveiled later this year. According to Bloomberg, the mobile smart speaker will control smart-home appliances, answer questions, play media, respond to messages, and learn a user’s routines over time. It also reportedly includes mechanical elements that can move on their own, which doesn’t sound creepy at all. Apple is suing OpenAI over its hardware push, alleging the company poached employees and misused trade secrets. OpenAI denies the allegations.
Notable Numbers 🔢

81%: the proportion of Canadians who worry that the rapid expansion of AI data centres will cause spikes in their household electricity bills, according to a recent poll. Nearly as many (79%) expressed concern over the environmental footprint, namely the massive amounts of power and fresh water needed to keep server farms cool. That worry is growing as tech firms scout expansion across provinces like Alberta.
60: the number of days participants were treated with fluvoxamine in a new McMaster-led clinical trial that found the low-cost antidepressant significantly eases long COVID fatigue. The medication successfully reduced symptom severity and improved overall quality of life, with benefits that persisted even 30 days after participants stopped taking the drug.
74%: the share of Gen Zers who reported drinking alcohol in the past 6 months, up from 66% 3 years ago. The supposedly sober generation may not be skipping the bar after all. They just got there a bit later.
Postcall Picks ✅
📚 Learn: how to optimize flu protection for your older patients this coming season. This 20-minute expert brief breaks down why adults 65+ are particularly vulnerable due to immunosenescence, compares available enhanced formulations, and provides practical EMR prompts and messaging strategies to boost vaccine uptake in your practice.
🌮 Make: these grilled beef tacos with watermelon and salsa verde. Thinly sliced, coriander-rubbed beef tenderloin meets a bright, refreshing mix of diced watermelon, cherry tomatoes, and crumbled feta. Top it all off with a zesty, homemade cilantro-and-lime salsa verde for the ultimate 30-minute summer taco night.
🎧 Listen: to The Holy Shiver, a captivating episode of Radiolab that investigates the biological mystery of goosebumps. The show dives deep into how a primitive mammalian survival instinct designed for cold and fear somehow evolved into a deeply emotional reaction to music, art, and awe.
💰 Save: on this portable propane pizza oven. It runs on standard gas tanks and reaches up to 850°F to crisp up 12-inch pies in about 60 seconds, making it a budget-friendly way to upgrade outdoor dinners without committing to a massive masonry setup.
📖 Read: this deep dive in The Walrus on why a new generation is treating aging like an optional inconvenience. The piece explores biohacking, stem cells, and longevity tech, unpacking how extending healthspan turned into a high-stakes obsession and asking how far we should go simply trying not to grow old.

Relax 🧩
First clue: 1, 2, and 3 for trainees
Need a rematch? We’ve got you covered. Check out our Crossword Archive to find every puzzle we’ve ever made, all in one place.
Think you crushed it? Challenge your physician friends to beat your time.
Meme of the Week 😂

Advertise with Postcall 📣
Want to reach thousands of Canadian physicians every week? Email denis.bricov@mdbriefcase.com to learn more.
Help Us Get Better 🙏
That’s all for this issue.
Cheers,
The Postcall team.
