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Maycee Barber's team gives health update after scary UFC Seattle loss
Maycee Barber's team says she is doing well and will "be back soon" after a brutal UFC Seattle loss.
Two Commanders' contracts among 15 most notable this offseason
The Commanders have been busy this offseason, but two contracts stand out above the rest.
Check out all 9 UFC Seattle finishes
UFC Fight Night: Adesanya vs. Pyfer took place on Saturday at Climate Pledge Arena. The 13-bout fight card featured nine finishes. The event was headlined by a middleweight match between former two-time titleholder Israel Adesanya and No. 14 ranked Joe Pyfer. Check out highlights of ...
UFC Seattle bonuses: Top of the card banked bonus checks
Following Saturday's UFC Seattle event at Climate Pledge Arena, the fight promotion announced the recipients of the performance-based bonuses. The 13-bout fight card featured 9 finishes, including finishes in every main card match. Two "Performance of the Night" bonuses were awarded and "Fight of ...
Demetrious Johnson joins 2026 UFC Hall of Fame
Demetrious Johnson will be immortalized in the UFC Hall of Fame as part of the 2026 class.
Washington Commanders unveiling new uniforms on April 15th
The Washington Commanders recently teased the unveiling of new uniforms on social media, and the reveal is scheduled for April 15th.
LeBron & Bronny James make NBA history again
LOS ANGELES — For their first act, LeBron and Bronny James became the first father-and-son duo to play together on […]
Midnight Mania! UFC 300 PPV Buys Revealed (And More)
Bringing you the weird and wild from the world of MMA each and every weeknight!
'Surreal' moment as scientists capture rare video of sperm whale birth
Rare footage of a sperm whale giving birth has offered scientists a window into the behaviour of these large, elusive mammals.
Eskimo kiss, anyone? Science explains nose-to-nose contact between mammals
A new study analyzes why the social gesture is important when it comes to information and survival, even among antisocial animals
Madison Square Garden Entertainment hires Philip D’Ambrosio under new employment agreement
Madison Square Garden Entertainment entered into a new employment agreement with Philip D’Ambrosio, Executive Vice President and Treasurer, effective April 1, 2026.Original SEC Filing: Madison Square Garden Entertainment Corp. [ MSGE ] - 8-K - Mar. 27, 2026This is an AI-powered summary. It may cont…
Some Slidell residents say defects in D.R. Horton homes are leading to health issues
At a meeting in Slidell organized by Louisiana United International and Concerned Citizens of St. Tammany, owners of D.R. homes in Lakeshore Village raised health concerns.
Live: UFC Seattle early weigh ins results
Ultimate Fighting Championship (UFC) is just over 24 hours away from the upcoming UFC Seattle mixed martial arts (MMA) event, booked for tomorrow night (Sat., March 28, 2026) on Paramount+ from inside Climate Pledge Arena in Seattle, Washington. UFC Seattle will be headlined by the middleweight main event between former champion Israel Adesanya and 185-pound […]
LifeNet Health Wins "Best Randomized Controlled Trial" Award for Diabetic Foot Ulcer Study
/PRNewswire/ -- LifeNet Health, a global leader in regenerative medicine, has received the Best Randomized Controlled Trial Award at the 2026 CAMPs Awards for...
Ken Burns on America’s Unfinished Revolution
At Radcliffe, the filmmaker joined Harvard historians to discuss what the nation’s founding means today.
Carolina Complete Health and Centene Foundation Announce Investment and Groundbreaking of Major Affordable Housing Initiative in Northeast Winston-Salem with McCormack Baron Salazar
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Scientists find gut bacteria inject proteins that control your immune system
Gut bacteria aren’t just passive passengers—they can actively send proteins straight into our cells. Using microscopic injection systems, even harmless microbes can influence immune responses and metabolic pathways. Researchers found these interactions may play a role in inflammatory diseases like Crohn’s. It’s a major shift in how scientists understand the microbiome’s power over human health.
Geno Auriemma and Dawn Staley are torchbearers of women’s basketball. But who’s next?
The sport needs more prominent voices for the next generation of coaches and players.
As Trump feels pressure to end war, allies fear what Iran may do next
Iran has demonstrated it can inflict significant damage on the world’s economy, even while outgunned. That creates a dilemma for President Trump.
Pay to win? The uneven playing field of NIL in college sports
With the rise of NIL, college sports are facing dilemmas that never existed in the past.
UConn's Geno Auriemma says Title IX 'pretty much out the window'
UConn women's basketball coach Geno Auriemma on Thursday said Title IX legislation, in practice, is "pretty much out the window."
Inside a Rare Sperm Whale Birth Reshaping How Scientists Understand Animal Cooperation
Two new studies from Project CETI provide the most detailed account of a sperm whale birth ever recorded, revealing coordinated care, complex communication and new clues about the evolution of cooperation in one of the ocean’s most intelligent mammals.
Hisense Advances a Quiet Green Revolution in Home Entertainment
/PRNewswire/ -- Hisense, a leading brand in global consumer electronics and home appliances, is advancing energy-efficient innovation across the industry as...
Join award-winning filmmaker for conversation on conservation
A free conservation event featuring a six-time Emmy award-winning filmmaker will take place Saturday morning at First Congregational Church in La Crosse.
Harmonic Delivers Winning Live Sports Streaming Innovations
/PRNewswire/ -- Harmonic (NASDAQ: HLIT) today announced powerful new innovations that further elevate the company's sports streaming solution. The advanced...
Boehringer Ingelheim and Connecticut Science Center Launch an Innovation Lab to Advance STEM Education Across Connecticut
/PRNewswire/ -- Boehringer Ingelheim Pharmaceuticals, Inc. and Connecticut Science Center announced the launch of an Innovation Lab, presented by Boehringer, a...
Thursday sports: lacrosse season underway
Watertow and Canton scrimmaged as they prepare for their openers.
Commanders 'contenders again' in these latest NFL power rankings
In SI's new power rankings, the Commanders are praised for a strong offseason thus far and are labeled "contenders again."
Pullman Danang Beach Resort Responds to Rising Bleisure Travel with Expanded Business and Leisure Facilities
/PRNewswire/ -- As global travel patterns continue to evolve, "bleisure" travel, which combines business trips with leisure experiences, has become a...
Former 49ers' third-round pick to visit Commanders
The Commanders are thin at cornerback and will host a 9-year veteran on Thursday.
Precigen Reports Full Year 2025 Financial Results and Business Updates
Precigen transitioned to a commercial stage company with the US approval of PAPZIMEOS™ (zopapogene imadenovec-drba), the first-and-only FDA-approved treatment...
The Most Overlooked Sign of Chronic Inflammation, Per a Holistic Health Doctor
Dr. Taz Bhatia reveals the physical changes you don't want to ignore and how to treat them.
More than $40K Awarded to Middle and High School Scientists and Engineers at the 72nd Greater San Diego Science and Engineering Fair
/PRNewswire/ -- The 72nd Greater San Diego Science and Engineering Fair (GSDSEF) was held this year at the Balboa Park Activity Center, on Wednesday, March...
Glyphosate: A story of science, risk, and nuance
In the summer of 2014, a California groundskeeper named Dewayne Johnson started noticing patches of raw, weeping skin spreading across his body. He had spent years applying Roundup, Monsanto’s glyphosate-based herbicide, for a school district, sometimes drenched in it when equipment malfunctioned. By 2014, he had a diagnosis: non-Hodgkin’s lymphoma. In 2018, a jury awarded him $289 million in damages, later reduced on appeal. Tens of thousands of lawsuits followed. The story hasn’t quieted down. It’s all over the internet, swinging between “this will kill you, buy organic” and “relax, you’re fear-mongering.” Some of that recent chatter stems from an Executive Order protecting glyphosate and its production, which set off intense infighting within the MAHA movement. Some of it reflects a deeper truth: Americans genuinely care about harmful chemicals in their environment (see poll below). And the conversation isn’t going anywhere, with a Supreme Court case involving Monsanto set for this April. Glyphosate (the active ingredient in Roundup) is one of the most widely used herbicides in the world. But does glyphosate cause cancer? And how much exposure is actually risky? With so much mistrust in institutions and corporations (and some genuine conflicts of interest), making sense of the actual scientific evidence is genuinely hard. Here is a translation of what the scientific evidence actually says. Does glyphosate cause harm? Glyphosate is an herbicide that kills most plants it contacts rather than targeting specific species. It works by blocking an enzyme pathway (EPSPS) that plants and many microorganisms need to produce essential amino acids. Without those amino acids, the plant can’t grow and dies. Glyphosate was first developed by Monsanto in the 1970s and became ubiquitous after the company introduced “Roundup Ready” crops in the 1990s. In 2024, Bayer removed glyphosate from residential Roundup-branded products due to litigation pressure. But today it is still the most widely used herbicide in the world. Farmers also discovered they could spray it directly on crops like oats, lentils, beans, and peas just before harvest to dry them out faster and make harvesting easier. Because of its widespread use, it’s obviously really important to understand if it’s harmful to humans. The key principle: The dose makes the poison The most important concept in toxicology is that “the dose makes the poison.” Sixteenth-century physician Paracelsus articulated what remains the foundational principle of toxicology: sola dosis facit venenum. Water will kill you if you drink enough of it. Aspirin saves lives at 81 milligrams and causes internal bleeding at higher chronic doses. So, at what dose is glyphosate poisonous? The LD50 in rats (the dose that kills half the test animals) is around 5,600 mg/kg body weight. Table salt is roughly 3,000 mg/kg. By that classic measure, glyphosate is less acutely toxic than salt. But some people are exposed to a lot of glyphosate through their work. And among the general public, there are many questions about low-dose, cumulative exposure from multiple sources over long periods. Does glyphosate cause health problems? Cancer Correlation maps are striking, with one analysis finding that 60% of counties that spray the most glyphosate have non-Hodgkin’s lymphoma rates above the national average. But correlation alone doesn’t establish cause, which is why animal and human studies matter. In animals: Rat studies are typically what most fear is rooted in, but most people don’t know the study details on the dosage given to rats. A pooled analysis of the 13 most rigorous rat studies found evidence that very high doses, around 55,000 times greater than typical food residue exposure, can cause certain cancers. In humans: One of the strongest studies followed 55,000 herbicide users over 20 years and found no overall increased cancer risk. There was one signal: among those with the highest use, rates of acute myeloid leukemia (AML) appeared elevated. A broader meta-analysis of 18 human studies also found no overall cancer risk, though a separate meta-analysis focused specifically on non-Hodgkin lymphoma found that people with high cumulative glyphosate exposure faced a 41% higher relative risk compared to those with low or no exposure. These human studies are observational studies (randomized controlled trials would be unethical), and meta-analyses are only as reliable as the studies they pool. But the story seems consistent: at very high exposure levels, there may be some cancer risk. But that’s about as far as the science currently takes us. Emerging research: gut and reproductive health Gut: Because glyphosate targets a pathway that exists in some gut bacteria, scientists have questioned whether it could affect the microbiome. In mice, a 2023 University of Iowa study found that glyphosate altered gut bacterial composition and raised markers of intestinal inflammation. A 2024 systematic review found similar patterns: disrupted gut bacteria and problems with the mucus layer that protects the intestinal wall in mice. Whether this translates to humans is an open question. The human gut is highly variable and resistant, and we don't yet have strong studies confirming the same effects in people. Reproductive health: Animal studies have found that glyphosate-based herbicides can interfere with reproductive hormones, including disrupting egg cell development in mice and reducing the number of eggs available in sheep’s ovaries. However, the doses used in these experiments were high, so it’s not yet clear whether the same effects would occur in humans. On the human side, a 2021 pilot study led by Mount Sinai researchers tested urine samples from pregnant women across the U.S. and found glyphosate in 95% of them. The study also found a possible connection between higher glyphosate exposure during pregnancy and a subtle physical difference measured in female newborns. That said, some connections weren’t statistically reliable and this was a small study. The researchers themselves said more and larger studies are needed before drawing firm conclusions. What do regulators say about glyphosate safety? In 2015, the International Agency for Research on Cancer (IARC), part of the World Health Organization, classified glyphosate as "probably carcinogenic to humans" (Group 2A). The classification is worth taking seriously. But, there’s an important distinction: IARC classifies hazard, meaning the potential to cause harm under some conditions. It does not assess risk, which accounts for actual exposure levels and the real-world probability of harm. The U.S. EPA, the European Food Safety Authority, Health Canada, and regulatory agencies in Australia and Japan have all concluded that glyphosate is “unlikely to be carcinogenic to humans” at realistic exposure levels. They’re asking a different question: given how much of this people actually encounter, what is the probability of harm? Your actual exposure is what determines your actual risk. What does glyphosate mean for your daily life? At the grocery store: Food residues are small. The EPA’s acceptable daily intake is 1.75 mg/kg of body weight per day. To hit that threshold from oatmeal alone, a 150-pound adult would need to eat roughly 50 pounds of oats every day. But this calculation addresses only one pathway (food), and we don’t yet have robust tools to measure people’s actual total exposure. If reducing exposure matters to you, organic certification prohibits synthetic herbicides, and organic oat products generally test at lower or undetectable levels. Either way, a diet rich in whole grains, conventional or organic, is far better for your health than one that omits them out of fear of residues. On the farm: Occupational exposure is orders of magnitude higher than consumer exposure. Farmers and farm workers who mix, load, and apply glyphosate-based herbicides, especially without protective equipment, face meaningfully different risk profiles. Proper PPE isn’t optional. Integrated weed management strategies that rotate chemical modes of action are also worth taking seriously, both for health and for long-term effectiveness. If you live near a farm: Spray drift is real. Concentrations near field edges can spike during and after application, particularly on windy days. This is an area where I think public health could really step up and empower rural communities with buffer zones, rather than placing the onus on individuals. But for now, knowing your local agricultural calendar and keeping windows closed during application are the first steps. Bottom line Dewayne Johnson was exposed to glyphosate at levels most people will never encounter, and a jury decided he deserved compensation. That outcome is not evidence that the oatmeal in your pantry is dangerous. But it is a reminder that the dose, the context, and the person doing the exposing all matter enormously. Glyphosate is a chemical tool with benefits, trade-offs, and genuine open scientific questions. Learning to hold that complexity without collapsing into panic or dismissal is, honestly, one of the most useful and hardest things to do in navigating modern health science. Love, YLE Your Local Epidemiologist (YLE) is founded and operated by Dr. Katelyn Jetelina, MPH PhD—an epidemiologist, wife, and mom of two little girls. Hannah Totte, MPH, is an epidemiologist and YLE Community Manager. YLE reaches more than 425,000 people in over 132 countries with one goal: “Translate” the ever-evolving public health science so that people will be well-equipped to make evidence-based decisions. This newsletter is free to everyone, thanks to the generous support of fellow YLE community members. To support the effort, subscribe or upgrade below: Subscribe
CEO Letter to Shareholders 2025
Dear Shareholders, 2025 was a remarkable year for Amer Sports and our teammates, partners, and shareholders. It gives me great pleasure to share with you some winning moments from the last 12 months…
Deloitte: From Subscribers to Superfans: Fan Engagement Shapes the Next Phase of Media and Entertainment Growth
/PRNewswire/ -- Key takeaways Consumer spend remains flat on streaming services: The average subscribing household reports spending $69 per month on streaming...
‘Project Hail Mary’ Is Out-of-this-world Entertainment
Back in 2017, filmmakers Phil Lord and Christopher Miller were hired and, several months into filming, fired from the Han Solo prequel movie, “Solo: A Star Wars Story.”
Scientists discover why this deadly lung cancer keeps coming back
Scientists have discovered that losing a key protein in small cell lung cancer triggers inflammation that actually helps tumors grow and spread. Even more surprising, it pushes cancer cells into a more aggressive, neuron-like state linked to relapse.
WATCH: Kushner, Witkoff, Rubio and Vance are 'in negotiations' with Iran, Trump says
Iranian parliament speaker Mohammad Bagher Qalibaf denied on Monday that Iran was negotiating with the U.S. to end the war.
New research sheds light on a common risk factor for colorectal cancer
New research clarifies the risk of colorectal cancer among people with Inflammatory Bowel Disease
Nine Brody School of Medicine students match to ECU Health for residency training
Fourth-year medical students from the Brody School of Medicine learned where they will take on residency during Match Day.
Iranian IRGC’s ties to Hezbollah deepen tensions in Lebanese politics
Lebanon's prime minister said the IRGC is commanding Hezbollah and analysts agree the Iranian group is calling the shots
GrayMatters Health Announces Appointment of Five Expert Advisors
/PRNewswire/ -- GrayMatters Health (GMH), the pioneers of digital brain biomarkers for mental healthcare, today announced the addition of five expert advisors....
Apnimed Announces Strategic Monetization of Shionogi-Apnimed Sleep Science (SASS) Joint Venture Stake for $150M and Royalties, Strengthening Focus on its Wholly-Owned OSA Program, AD109
/PRNewswire/ -- Apnimed, Inc., a pharmaceutical company developing an oral drug product candidate, AD109, that is designed to address a root cause of...
He was Rubio’s friend and roommate. Now Rubio will testify against him.
Former congressman David Rivera, accused of secretly lobbying for Nicolás Maduro’s government in Venezuela, climbed Miami politics alongside Marco Rubio.
CDC dilemma: Nominee may need both MAHA and science chops
As a deadline arrives this week to nominate a Centers for Disease Control and Prevention director, some Republicans are skeptical the administration will find someone who can check all the boxes necessary for confirmation. The candidate will need the “Make America Healthy Again” mindset of Secretary Robert F. Kennedy Jr.’s Health and Human Services Department, […]
Scientists say NAD+ could slow aging and fight Alzheimer’s and Parkinson’s
A global team of leading scientists is zeroing in on a tiny but powerful molecule that could reshape how we age. Known as NAD⁺, it plays a crucial role in keeping our cells energized, repairing DNA, and maintaining overall health—but its levels steadily decline over time, potentially fueling diseases like Alzheimer’s and Parkinson’s. Researchers are now exploring ways to boost NAD⁺ using compounds like NR and NMN, with early studies hinting at improvements in memory, metabolism, and physical function.
Did Dana White want Nate Diaz back in UFC?
Former title contender Nate Diaz will return to MMA for a promotion not named UFC.
Zions Bancorporation to Acquire Fannie Mae and Freddie Mac Business Line from Basis Investment Group
/PRNewswire/ -- Zions Bancorporation, N.A. (NASDAQ: ZION) today announced that it has entered into a definitive agreement to acquire the agency lending...
The MacBook Neo proves Apple is leaving a door wide open for Google’s ‘Aluminium OS’
Apple recently did something that, on paper, seems to make no sense. They launched the MacBook Neo; a $599 laptop powered by the A18 Pro chip that, in a previous life, powered the iPhone 16 series....
Emmanuel Grégoire, Socialist long involved in local politics, voted new Paris mayor; AP explains
Grégoire won over 50% of the votes, beating out prominent conservative contender Rachida Dati who reached 41% while hard-left contender Sophia Chikirou got about 8%.
Stealth BioTherapeutics Announces MRC Business Engagement Fund Grant to Advance Mitochondrial Disease Research
/PRNewswire/ -- Stealth BioTherapeutics (the "Company"), a commercial-stage biotechnology company focused on the discovery, development, and commercialization...
Cardinal Health Appoints Patricia A. Hemingway Hall as Board Chair
/PRNewswire/ -- Cardinal Health (NYSE: CAH) today announced that its Board of Directors has appointed Patricia A. Hemingway Hall to succeed Gregory B. Kenny as...
What events are happening in the South Bend area from March 23 to 29?
A variety of events will keep you busy this week. Attend a screening event, catch a concert, attend a lecture or play.
Emmanuel Grégoire, a Socialist long involved in local politics, becomes Paris' new mayor
Emmanuel Grégoire has won the Paris mayoral race and takes over from fellow Socialist Anne Hidalgo
Socialist Emmanuel Grégoire elected Paris mayor in runoff vote
Emmanuel Grégoire has won the Paris mayoral race and takes over from fellow Socialist Anne Hidalgo. On Sunday, he sealed the moment by riding a city bike to City Hall.
A promising fatty liver treatment may raise cancer risk
A surprising new study reveals that blocking a supposedly protective enzyme, Caspase-2, could actually backfire—raising the risk of chronic liver damage and cancer over time. Researchers found that without this enzyme, liver cells grow abnormally large and accumulate genetic damage, leading to inflammation, scarring, and eventually tumors, especially with age. While inhibiting Caspase-2 may offer short-term benefits, such as reducing fatty liver disease, the long-term consequences appear dangerous.
Your Thymus and Your Healthspan
Our thymus gland plays a central role in the development or our immune system, specifically for supporting T cell development (how these cells got their name, maturation and differentiation in the thymus) and discriminating between self and foreign, non-self antigen proteins with production of dendritic cells. As we age, our thymus gland shrinks—the process known as involution—with progressive change from spongy to fatty tissue, with loss of functionality. But this process, with respect to timeline and extent, markedly varies from one person to the next. And to make things even more complicated, our thymus gland anatomy and precise location in the chest also is highly variable. So the famous Frank Netter diagrams from the 1960s (such as at left below) don’t capture the remarkable heterogeneity that a random set of 12 chest CT scans (below at right). What I consider as 2 landmark papers in Nature this week (here and here) used AI to quantify health of the thymus in 2 large cohorts, and then correlate the metric to a broad array of health outcomes. In this edition of Ground Truths, I’m going to cover three questions: (1) How was thymus health determined by AI?; (2) How is thymus health linked to key clinical outcomes? and (3) Are there ways we can promote a healthy (aka rejuvenate) thymus gland in our later years? Subscribe 1. How was thymus health determined by AI? This was accomplished by extensive work developing and validating an AI pipeline for 2 stages, the first for localization and segmentation of the thymus bed, and the second to quantify a digital marker, termed the thymic health score. There’s a lot to this algorithmic development, so I won’t go into all the details, but just provide a rudimentary outline of what was done. The 1st stage used supervised learning with 2 radiologists reviewing 2,461 chest CT scans. That work trained a 3D U-Net model to automatically identify the thymic bed’s 3D cropped region using center of mass coordinates, which reached 99.8% accuracy. The 2nd stage used a foundation model that was pre-trained with SwAV (which stands for Swapping Assignment between multiple Views), a self-supervised model, that generated a high-dimensional thymus representation of 4,096 features. That compares to the radiology reductionist and subjective scoring of 0 to 3 where 0 means the thymus is fully degenerated and fatty, and 3 is considered dense, intact glandular soft tissue. Notably, the self-supervised learning (SSL) performance was superior to supervised (AUC ~0.75 vs 0.55, respectively) reflecting the shallowness of the 0-3 classifier vs SSL’s holistic, self-taught AI. The thymic health score ranged from 0 to 100, with the highest number indexed to fully preserved thymic health. The algorithmic work extended to explainability with both Shapely value distribution, meaning the model was holistic not relying on any “magic” pixel, and occlusion sensitivity, demonstrating the model’s performance was not affected by ribs, sternum, lung tissue, but rather focused on the thymic bed directly. Below are a few saliency maps from the occlusion sensitivity that indicate the thymic bed focus, not affected by neighboring structures, using the jet color scale. Now the AI was ready for processing ~25,000 CT scans, each over 30 MB files, from the 2 large participant cohorts to provide a thymic health score, it did so in less than 14 hours, which is less than 2 seconds per scan! Share 2. How is thymus health linked to key clinical outcomes? The two cohorts were the National Lung Screening Trial, NLST (N=25,031) and the Framingham Heart Study, FHS (N=2,581) each with baseline demographics and long term follow up of >12 years for health outcomes. From the NSLT, you can see below that increased age and body-mass index were correlated to reduced thymic health. And, overall, men had reduced thymic health scores compared with women. There are a lot of graphs in the paper for outcomes, for both the NLST and FHS cohorts. To simplify the major outcomes, below is a composite Figure with striking reduction of all-cause mortality and for the different causes of death. The results were consistent between the 2 cohorts. For example, the cardiovascular mortality hazard ratio average was 0.57 in NLST and 0.38 in FHS (weighted to be 0.53 for the aggregate). The reduction of mortality also extended to digestive diseases and pulmonary disease (data not shown below). Lung cancer incidence was reduced by 36% for high vs low thymic health (Figure below, with a panel -incidence and b panel-mortality, adjusted for age, sex, BMI, smoking status). Notably, there was a smoker’s paradox: lower incidence and improved survival for lung cancer in smokers who had a high thymus health score. Smoking was associated with lower thymic scores whereas alcohol was not. Higher thymic health was linked to higher HDL cholesterol, lower triglycerides, lower fasting blood glucose, and lower systolic and diastolic blood pressure. Inflammation biomarkers, such as C-reactive protein and interleukin-6, were elevated in the people with lower thymic health scores. In their second paper, the same team looked at the relationship between thymic score and outcomes for 3,476 patients receiving cancer immunotherapy. The non-small cell lung cancer progression-free survival was reduced in patients with low thymic health score. A parallel relationship for survival was seen for other types of cancer including melanoma, breast, and kidney with a 44% lower risk among high thymic scores (Figure). A similar pattern was seen with different immune checkpoint inhibitors. The thymus health score outperformed programmed death ligand-1 (PD-L1)and tumor mutation burden (TMB) assay of the tumor and was an independent prognostic marker of progression-free survival. In this dataset, a direct connect with thymus score and adaptive immune function was noted with a correlation before cancer treatment for both T-cell diversity and thymus T-cell production (a metric known as T cell receptor excision circles). Thymus Removal Study There is a highly relevant citation about thymus function before moving onto ways to rejuvenate it. In 2023, a very important study of thymus removal during cardiothoracic surgery was published, with 1146 patients undergoing thymus removal vs 1146 matched controls (mean age 55 years). The adverse outcomes for thymus removal were striking, with a 2.9 higher risk of all-cause mortality and doubling of cancer incidence, 1.5 fold increase in cancer mortality, and 1.5-fold increase in autoimmune diseases. The immune function showed marked compromise after thymus removal, as reflected by CD4+ and CD8+ T cells (Figure below) Share Ground Truths 3. Are there ways we can promote a healthy (aka rejuvenate) thymus gland in our later years? In recent months we’ve learned a lot about the process of thymus involution and the pathways by which this may be modulated. Thymus involution is primarily due to loss to thymus epithelial cells (TECs) and there are 2 subtypes with different functions: the cortical, responsible for positive selection of T cells, and the medullary, for negative selection. When adipose tissue infiltrates the thymus, thymic adipocytes are pro-inflammatory, knocking out T-cell output. Likewise, systemic inflammation, or “inflammaging,” from smoking, obesity, and chronic stress promote thymic adipocytes. Now, from preclinical studies, we know about key pathways that account for these processes. Historically, back in 2014, FOXN1 was recognized as a single master transcription factor essential for TEC function, with studies in mice with forced FOXN1 upregulation leading to thymus regeneration. That laid the foundation for potential regrowth of quiescent thymus cells. It took awhile to find pathways to accomplish this goal and to even refute its role as the master regulator. The Liver-Thymus Axis Feng Zhang and his team recently showed that injection of an mRNA vaccine to the liver encoding DLL1, IL-7 and FLT3-L in combination, factors known to support thymopoiesis (Figure), successfully enhanced immune function in aged mice. However, the effect was transient. The FGF21 Story Two reports in 2025 addressed the thymus gland’s production of FGF21, a growth factor (fibroblast growth factor 21) and its control of thymus involution. This growth factor is also produced by the liver, but it doesn’t have impact on the thymus in aged rodent models. In contrast, The liver’s hepatocyte growth factor (HGF) has been shown to reverse senescent TEC structural changes. Growth hormone stimulates production of insulin growth factor-1 (IGF-1) in the liver and the thymus. Two small studies in human participants (TRIIM, for Thymus Regeneration, Immunorestoration, and Insulin Mitigation) of 6 and 50 people, respectively, treated with combined human growth hormone, metformin and DHEA, suggested the potential of slowing epigenetic aging and improving thymus mass and function. But the combination of drugs, small sample, and lack of controls make conclusions murky. Increased thymus FGF21 led to increased CD8 T cells in old mice and extended healthspan and improved physical performance. Building on the previous FOXN1 data, ablation of β-klotho, the obligatory co-receptor for FOXN1, accelerated thymic aging. The benefit to FGF21 was confirmed in a companion paper using an FGF21 knock-in mouse model showing thymus enlargement and increased TECs throughout the lifespan. (schematic Figure below). The accompanying editorial for these 2 papers speculated: “The proposed link between age-associated thymus involution and organismal aging is intriguing, and suggests we might seek to achieve systemic rejuvenation by counteracting thymic involution.” Other Factors Lessons from the Axolotl (Mexican Salamander) In an elegant set of experiments of the axolotl (Figure), known for its complete thymus regeneration after total surgical removal, mediators were identified. Surprisingly FOXN1 was dispensable. But midkine, a growth factor, appeared to be the driver, the initiator of thymus cell growth, survival, and repair. Other components that contributed were Postn+ (periostin-expressing mesenchymal niches) and Ccl19, a chemokine protein from the bloodstream. RANK and RANKL RANK (receptor activator of nuclear factor κB its ligand (RANKL) have been considered key regulators of medullary TECs. In a study of both aged mice and human thymus cell cultures, their key role was confirmed, with multiple benefits of resorting TEC function, recruitment of progenitor cells, and T cell development. Subscribe Summing Up This body of work strongly supports the health of the thymus gland as a critical regulator of human healthspan, not just a correlate or link. The new landmark studies are reinforced by the regenerative biology experimental models that have shown, via an array of mediators, that healthspan of aged mice is at least in part dependent on thymus gland function and its critical role for maintaining adaptive immunity. It sure seems that we’d be better off having an immune reservoir of naive T cells instead of a profile in older adults of exhausted, low quality, memory T cells, with a senescent phenotype. It is striking that we ignored the importance of the thymus gland for many decades. A wake-up call was the results of the thymectomy matched control study reviewed here, with the opposite of high thymic health score improved health outcomes. The convergence of AI and healthspan here is notable. The exceptional and laborious work for developing and validating (no less explaining) the AI to quantify thymus health set the foundation for probing the connect the major health outcomes in two cohorts with extensive follow-up. We’ve never had a way to meaningfully quantify the thymus gland before, so this represents important leverage of supervised, self-supervised, and transformer models. The study wouldn’t have been possible without AI. And it begs the question as to whether there are ways we can maintain our thymus at a high health score. But it’s not so simple to rejuvenate our thymus. There are multiple risks including the induction of autoimmunity, increasing the risk of cancer, and inducing a pro-inflammatory state. For example, factors that increase TEC proliferation could compromise the medulllary negative selection process and leak out auto-reactive (self-attacking) T cells. Thymic cells could be induced to proliferate, but we know, for example, that growth hormone and IGF-1 are associated with an increase risk of cancer. If thymus rejuvenation doesn’t clear out the accumulated senescent cells in older adults, then inflammation within the gland could block the production of TECs. Keeping these risks in mind, we now have identified many ways to keep our thymus healthy as we age that undoubtedly will be tested in clinical trials going forward. Ultimately, the benefit-to-risk tradeoffs will be defined. In the meantime, we have desperately needed an immunome. As I’ve stressed in multiple prior Ground Truths, we have no test in the clinic to assess a patient’s immune status! It was very encouraging for me to get an email from Hugo Aerts, the senior author of the landmark papers in the days after they were published: “I also wanted to say that your Substack on “Why We Need an Immunome” was inspiring for this work. We found it a very compelling perspective and greatly enjoyed reading it.” Just having an assessment of a person’s immune status via a chest CT scan, with millions of these performed per year, might help in guiding the right immunotherapy for cancer (e.g. more intensive, combinations for those with low thymic health scores) and help define people who are increased risk for age-related diseases of cancer, cardiovascular, and neurodegenerative. The main theme of Super Agers is that we now have many layers of data (genetics, proteins, biomarkers, organ clocks that can be integrated via multimodal AI) for us to define a person’s specific risk decades before one of these age-related diseases leads to symptoms, enabling prevention. From the new studies this week, we can add thymus health score as yet another way to understand a person’s risk, a window into their adaptive immune system and healthspan. And perhaps someday we will be able to safely rejuvenate the thymus, or maintain its health through one’s life, and use the thymus health score to monitor. NB: I wrote this post (No A.I.) A Quick Poll Loading... ********************************************************************* Thanks to Ground Truths subscribers (now > 200,000) from every US state and 212 countries. Your subscription to these free essays and podcasts makes my work in putting them together worthwhile. Please join! If you found this interesting PLEASE share it! Share Ground Truths Paid subscriptions are voluntary and all proceeds from them go to support Scripps Research. They do allow for posting comments and questions, which I do my best to respond to. Please don’t hesitate to post comments and give me feedback. Let me know topics that you would like to see covered. Leave a comment Many thanks to those who have contributed—they have greatly helped fund our summer internship programs for the past two years. It enabled us to accept and support 47 summer interns in 2025! We aim to accept even more of the several thousand who will apply for summer 2026.
Scientists discover surprising brain trigger behind high blood pressure
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A tribute to Scott Ostler, columnist, colleague, friend and sports wit
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Tom Kean Jr.'s political roots date to 1776. Is that enough to protect the Republican's House seat?
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Commanders' LB's brother is a March Madness hero for Kentucky
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Downtown Chico business owner voices concerns over street closures for events
A DOWNTOWN CHICO MERCHANT IS EXPRESSING CONCERN OVER THE IMPACT OF STREET CLOSURES FOR EVENTS -- ON THEIR BUSINESS. ACTION NEWS NOW REPORTER BELLA BARBOSA REPORTS FROM DOWNTOWN CHICO { "@context": "https://schema.org", "@type": "VideoObject", "name": "Downtown Road Closure Dilemma", "description": "A DOWNTOWN CHICO MERCHANT IS EXPRESSING CONCERN OVER THE IMPACT OF STREET CLOSURES FOR EVENTS -- ON THEIR BUSINESS. ACTION NEWS NOW REPORTER BELLA BARBOSA REPORTS FROM DOWNTOWN CHICO", "thumbnailUrl": "https://bloximages.newyork1.vip.townnews.com/actionnewsnow.com/content/tncms/assets/v3/editorial/c/47/c47e26d6-03c3-5f35-bf49-37925ab603d7/69bdedc4eb57d.image.jpg", "uploadDate": "2026-03-20T17:45:00-07:00", "contentUrl": "https://cdn.field59.com/KHSL/1774053903-6e1ef36dd09fbebf020833aee86b60da3b3cca3f_fl9-720p.mp4" } CHICO, Calif. - A downtown Chico business owner is voicing concerns about the impact of street closures for events on local shops. Leann Powell, owner of The Peddler’s Closet, expressed concern about events closing down streets downtown and bringing in food trucks and other shops’ products that directly compete with the brick-and-mortar stores in downtown Chico.Powell said an upcoming event held on a Saturday has brought up concerns for her and other business owners downtown, due to it being a busy day for businesses. "We're already struggling, and then to bring in more businesses on top of our businesses and shut our streets down is absolutely devastating," said Powell.Powell noted a decline in business during events like the Thursday Night Market, where street closures allow outside vendors to set up shop. She shared that while organizers for these types of events often offer booths to local businesses, it does not alleviate the burden."I don't really feel like that's a solution because you're bringing in other businesses, you're shutting the streets down. Yes, we can go down and set up a space, but then you've gotta pay somebody to run that space, plus run your own business for the day, and it's really not, it's really not helpful for us," said Powell.Applying for a street closure permit in Chico involves approval from the Public Works Department, the Chief of Police, and the Fire Chief. Permits can be denied only under a handful of circumstances, such as interference with first responders, previously scheduled construction, or existing permits for the same space.Mayor Kasey Reynolds addressed the issue, saying the city council has tasked staff with reviewing the municipal code for street closure permits with the goal of finding ways to minimize negative impacts on local businesses during events.Reynolds mentioned that any recommended changes might require further direction from the city council, depending on the extent of any changes recommended. googletag.cmd.push(function() { googletag.display('ad-1514992'); });
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Brazil’s finance minister Haddad resigns to launch a high-stakes bid for Sao Paulo governor
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Mid-Ohio Valley Entertainment Commission hosts training session on film production
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Mid-Ohio Valley Entertainment Commission hosts training session on film production
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Del Monte Foods Successfully Completes Sale Transactions Across All Business Segments
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Russia adds fiber-optic wires to Molniya drones, makes them unjammable
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Protalix BioTherapeutics Reports Fiscal Year 2025 Financial and Business Results
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