Sarah Okonkwo
325 stories · Page 6 of 14
The Coffee-and-Bones Study Behind the Scary Headline Found No Significant Coffee Effect
The tea benefit was 0.003 grams per square centimeter, a number the authors themselves called too small to matter. The scary coffee result never cleared statistical significance.
Brain & AgingA Kinesiologist Argues Aging Has a Third Clock, and It Fades First
Georgia Southern's Li Li argues aging has a third clock, movement span, that starts narrowing before any disease shows up. A compelling reframe with one catch: it's an opinion paper carrying zero new data.
Drugs & FDATwo Factories Make the Starter IV Nutrition America's Preemies Live On. Both Are Closing, and the Backup Plan Has Killed Babies Before.
The predominant source of starter IV nutrition for premature newborns is two outsourcing facilities, and both are permanently closing. The FDA's fix: let hospital pharmacies mix it themselves for 180 days, sending the most unforgiving product in medicine back into the loosely regulated compounding t
Brain & AgingThe Sea Squirt That Reverses Aging Is a Mouse Study From 2022. The Capsules Are Already on Amazon.
The mice got 300 milligrams per kilogram by feeding tube, five days a week, for two months. The human trials used about a milligram a day, most were funded by the companies selling the capsules, and the largest could not beat placebo.
Metabolic & WeightA Blueberry Compound Pulled Fat Out of Muscle Cells by Saving the Protein That Burns It
Pterostilbene didn't switch on fat-burning in muscle cells. It stopped them from destroying the protein that runs it, and the stored fat came apart. The catch: this happened in a dish, and you can't eat your way to the dose.
Investigations97,000 Sibling Sets Later: Standard Air-Pollution Birth Studies Overshot One Risk and Buried Another
Comparing brothers and sisters born to the same mother stripped out many of the family-level confounders, and the scary preterm-birth links shrank while the growth-restriction link the conventional models kept underselling got stronger.
Infectious DiseaseRattlesnakes Carry Their Own Antivenom in Their Blood, and in Mice a Cocktail of It Beat CroFab Tenfold
Rattlesnakes shrug off key parts of their own venom. Biologists found the blood proteins behind that trick, mixed them, and in mice the cocktail neutralized diamondback venom about 10 times better than the commercial antivenom.
CancerFused Into One Cell, a Neutrophil and a Macrophage Ate Tumors Two Ways
CAR-macrophage therapy keeps stalling in solid tumors: it can't get in, and it can't finish. Fuse a neutrophil onto it and, in mice, one dose shrank the tumor and kept it from coming back.
Brain & AgingA Salsa Class, a Grocery List, and 38 Check-Ins Beat Health Advice on Memory by 55%
Across 11 Latin American countries, a coached program of exercise, an adapted MIND diet, and cognitive training improved older adults' thinking 55 percent more than periodic health advice, with no infusion chair and no $26,500-a-year drug.
Autoimmune & InflammationOxford Found the Cells That May Mark Which Joints Rheumatoid Arthritis Attacks. They Were There Before You Were Born.
The joints rheumatoid arthritis attacks and the ones it spares are built differently in the womb, seeded with different cells before a single joint ever swells.
Brain & AgingDirty Air Is Linked to 16 Percent More Inflammation in Your Blood. Does That Damage Reach Your Brain?
Each step up in long-term fine-particle exposure is tied to nearly 16 percent higher inflammation in older adults' blood, and a CHARLS analysis asks whether that same signal is what wears down the aging brain.
Brain & AgingAutistic Teenagers Are Bullied Three Times as Often, and We Have Barely Studied How to Protect Them
Autistic teenagers are bullied roughly three times as often as their peers, and the sexual-victimization risk that shadows them into adulthood is just as real, yet the research meant to protect them is small, scattered, and looking the other way.
Metabolic & WeightAt the Dose the FDA Calls Safe, Two Sweeteners Reshaped the Guts of Mouse Grandpups That Only Drank Water
Chilean researchers fed mice sucralose and stevia at the doses the FDA calls safe. The metabolic marks showed up in grandpups that only drank water.
Nutrition & FoodYour Gut Bacteria Decide Whether Sorbitol Is Harmless or a Liver Problem
Sorbitol was sold for decades as the inert, guilt-free sugar swap. In zebrafish stripped of their gut bacteria, WashU researchers watched the intestine's own sorbitol reach the liver and feed the same fructose-metabolism pathway that packs on liver fat.
Infectious DiseaseWeathered Plastic in the Water Grows Its Own City of Drug-Resistant Bacteria
On weathered plastic drifting from a lake into a river, researchers logged 102 new antibiotic-resistance gene subtypes moving into the surrounding water in five weeks.
Brain & AgingThe Amino Acid Sold for Focus Tracked Fewer Years for Men, Not Women
In more than 270,000 people, men with higher blood tyrosine died sooner, by nearly a year on the genetic estimate. Women showed no clear lifespan signal. The amino acid is sold in capsules for focus.
Metabolic & WeightEurope Wants Every Heart Patient Tested for Kidney Disease. The Test Is Cheap. The Drugs It Funnels You Toward Are Not.
The European Society of Cardiology now says screen every heart patient for kidney damage and start the drugs early. More than 80 percent of the guideline's authors report financial ties to industry.
Brain & AgingThey Didn't Rewrite the Memory. A Flinch of Surprise Predicted Who Got Better.
Polish researchers had 180 young adults imagine a defender stepping into a painful childhood memory. The rewrite itself helped only modestly. What predicted who improved was an involuntary jolt of surprise, measured in the skin, when the expected blow never came.
Autoimmune & InflammationThe Immune Cells That Calm Autoimmune Disease Can Also Ignite It. One Protein May Hold the Switch.
Regulatory T cells keep autoimmune disease in check, but under inflammation they can shed their identity and turn inflammatory. In mice, researchers find a protein called TIF1γ restrains that defection by sending a runaway growth signal to be destroyed.
Infectious DiseaseThe HIV Reservoir Everyone Called Untouchable Has Natural Killer Cell Fingerprints All Over It
In 104 people on long-term HIV treatment, the ones whose natural killer cells were armed a certain way carried far fewer intact copies of the virus. The reservoir that defeats every cure turns out to carry the fingerprints of an immune fight nobody thought was happening.
Brain & AgingThe Calm-Down Breath That Made People Bet Bigger
A 2-second inhale and an 8-second exhale slowed 41 people's hearts and, across the same sessions, made them more willing to take the risky bet. The pull came from the reward side, not from any loss of caution.
Autoimmune & InflammationMicrofold Cells Got Filed as the Gut's Mail Slot. They Were Organizing Its Defense.
The specialized cells that hand your gut bacteria to the immune system turn out to build the niche that keeps antimicrobial defense switched on, and the same signal that makes them wires in the brake.
Nutrition & FoodWhat Probiotics Actually Do for Autistic Kids Isn't What the Label Promises
A review pooling about 1,000 participants found the clearest probiotic effect in autistic children lands on the gut, not behavior. The supplement aisle sells the reverse.
Metabolic & WeightWhat Fluoride Does Once It Gets Past the Teeth
As Washington fights over whether to keep fluoridating tap water, the sharpest evidence on childhood fluoride and cardiovascular risk comes from places where the dose dwarfs anything out of a U.S. tap. The whole argument is about how much.