Sarah Okonkwo
270 stories · Page 2 of 12
Blood Pours Into the Mouse Cortex Seconds Before REM, Then the Neurons Run Low on Fuel Anyway
About 50 seconds before REM sleep starts, blood volume surges across a sleeping mouse's cortex. Then the neurons' usable energy drops sharply anyway, and no one can yet say what they are burning it on.
Autoimmune & Inflammationargenx's Own Scientists Found Antibody Levels Alone Don't Explain Who Its $225,000 Myasthenia Drug Helps
Six of the paper's authors work for argenx and hold its stock. Their data on 50 patients shows efgartigimod's benefit tracked more closely with how thoroughly it disarmed the rogue antibodies than with how many it stripped away.
Nutrition & Food87 Trials Found the Whole-Grain Sweet Spot: Sixteen Markers Nudged Healthier, None of Them by Much
Sixty to a hundred grams of whole grain a day nudged weight, cholesterol, blood pressure and inflammation the right way across 87 randomized trials. The median trial ran eight weeks, every effect was tiny, and not one counted an actual heart attack.
Drugs & FDATrump's FDA Nominee Backed Cutting the Vaccine Schedule, Then Hid Behind 'Safe and Effective' Under Oath
Heidi Overton stood beside Trump as he cut the childhood vaccine schedule from 18 diseases to 11. At her confirmation hearing she spent two hours calling every FDA-approved vaccine 'safe and effective' and refused to defend the reform she coordinated.
Metabolic & WeightOne in Six Kids on Weight-Loss Drugs Was Diagnosed With a Nutrient Deficiency, and Only 5 Percent Got Nutrition Counseling
The alarm about kids going short on vitamin D on Ozempic-style drugs came from a study funded by Abbott, which sells the very nutrition drinks marketed to fill those gaps.
Brain & AgingI Track My REM Sleep Every Night. This Study Made Me Stop Trusting the Number.
The viral headline says more REM sleep guards you against 83 diseases. But a brain sliding toward Parkinson's shreds REM years before diagnosis, and the study's own two-year exclusion test quietly agrees.
Metabolic & WeightForever Chemicals, Pregnancy, and the Vitamin That Might Decide Who Gets Hurt
Early-pregnancy PFAS tracked with gestational diabetes in a 420-woman China cohort, but almost entirely in mothers already low on vitamin D. A 5,229-pregnancy US analysis found no added risk at all. The gap between them may come down to one cheap blood test.
Nutrition & FoodCaffeine Can Flatten Your Deep Sleep While You Sleep Right Through the Night
On caffeine, the slow brain waves that make sleep restorative can thin out even when you fall asleep fast and wake up sure you rested.
Nutrition & FoodThe Older Adults Whose 'Biological Age' Dropped Ate More Carbs and Kept the Meat
The omnivorous, low-fat, high-carbohydrate group showed the strongest drop. The keto-style omnivore group was the only one of four that didn't budge at all.
Metabolic & WeightThe Headlines Blamed Stress. The Data Blamed Belly Fat, Cigarettes, and Poverty.
In 488,079 UK adults, chronic inflammation tracked with a heart quietly remodeling into a smaller, stiffer pump. The loudest drivers were belly fat, cigarettes, and poverty. The paper points at a druggable inflammation pathway; its senior author discloses fees and grants from Bayer and Google's Cali
Autoimmune & InflammationThe Air Never Arrives One Pollutant at a Time, but the Rules Pretend It Does
In a big European analysis, almost every pollutant tested on its own came back borderline. Measure the whole mixture the way it actually reaches the lung, and the adult-asthma signal shows up.
Metabolic & WeightWhere Taiwan's Air Got Dirtier, Early Kidney Disease Turned Severe 2.25 Times as Often
Taiwan tracked 424,000 people with early kidney disease and the air they breathed. Where PM2.5 climbed, more of them slid toward dialysis and death. Where it fell, fewer did.
Nutrition & FoodEven the Vitamin C Made the List: 112,000 People and Eight Everyday Preservatives Tied to High Blood Pressure
Ascorbic acid, citric acid, sodium nitrite: three of eight common food preservatives that a 112,000-person French cohort has now linked to higher blood pressure, with the researchers asking the FDA and EFSA to re-check them.
Metabolic & WeightCrash Diets Rewire Your Gut to Sabotage the Next One
In mice, transplanting the gut microbes of weight-cycled animals into healthy ones handed over the bingeing with them. Crash dieting reshapes the gut, and the diet industry keeps selling you the fix for damage its last plan made.
Brain & AgingA Bendable Fiber Thinner Than Six Hairs Records, Doses, and Stimulates a Mouse Brain at Once
Silicon brain probes scar the tissue they're built to read. A soft optical fiber from Denmark records, doses, and stimulates neurons at once, in mice, with a pharma foundation and pending patents behind it.
Autoimmune & InflammationThe 47th Human Blood Group Was Hiding in a Protein Almost Too Small to Find
More than 99.9% of us carry the AnWj antigen without knowing. For the rare few born without it, a routine transfusion can turn dangerous, and until now no genetic test could reliably identify them before the damage was done.
Infectious DiseaseFor 400 Years After the Black Death, Plague Kept Walking Back Into Europe on War Roads
Twenty-six sets of medieval teeth trace Yersinia pestis splitting into three branches around 1500, with the later lineages tracking the roads armies and refugees traveled. The pattern points to repeated re-introductions, plus some strains that may have dug in locally.
Nutrition & FoodThe Fat Hiding in Black and Green Rice Is a Cousin of the Body's Own Blood-Sugar Molecules
Hokkaido chemists screened 56 rice varieties and found the pigmented ones carry a lipid cousin of the body's own insulin-sensitizing fats. This study did not test it in people.
Brain & AgingThe 'Supplement Reverses Aging' Headline Skips the Brain Surgery on the Mouse
The mouse study now going around as an anti-aging supplement win leaves out the part where the real reversal took a virus carrying a gene, injected into the hypothalamus.
Nutrition & FoodMRI Found Fat Marbled Inside the Thigh Muscles of Heavy Ultra-Processed Eaters, and Calories Didn't Explain It
MRI scans of 615 adults found more fat marbled inside the thigh muscle the more ultra-processed food people ate, and the link held after adjustment for calorie intake, exercise, and fat intake.
InvestigationsAn 'A' for the Air Outside, Nearly Three Times Dirtier Inside
The EPA rated one Virginia region's outdoor air a clean 'A.' Inside the public-housing apartments of elderly and disabled residents, fine-particle pollution ran nearly three times higher, the air most long-term pollution studies miss.
Autoimmune & InflammationSeven Biologics, Up to $47,000 a Year, and 89 Percent of Europe's Severe Asthmatics Still Aren't in Remission
The Lancet calls severe asthma an 'unmet need.' A 13,455-patient European registry shows most of those patients are already on the pricey biologics, and 89 percent still have active disease.
Brain & AgingFreeze a Brain Cell Fast Enough and Its Bare Wires Turn Out to Be Strings of Pearls, Not Smooth Tubes
The bumps along the brain's thinnest fibers were written off as damage for a century. Johns Hopkins froze the tissue fast enough to catch them intact, and to watch them swell when the neuron fires hard.
Autoimmune & InflammationDonor T Cells Cross Into the Gut Lining and Become Resident Killers That Won't Leave
Columbia researchers tracked more than 51,000 donor T-cell clones across two years and found the ones tied to the worst graft-versus-host disease change identity depending on where they land in the gut, and spike in the blood weeks before symptoms show.