Thursday, October 29, 2026 Evidence-led medical research news
The First Cohort
Medical research, with the receipts

environmental-health

31 stories tagged "environmental-health"

Infectious Disease

Ghana's 1.7 Million 'Climate' Diarrhea Cases Come From a Model Where Risk Falls in the Hottest Months

Built on a UK-led official-statistics framework, the estimate compares 12 years of Ghanaian weather against a benchmark set by a rule that resolved to the 95th percentile. It does not measure climate change, and each weather exposure accounts for 5.5 percent of cases.

Investigations

Oven Gloves Bought From a Top Online Retailer Tested 89 Percent Asbestos

A private citizen asked two Italian mineralogists whether a cheap pair of heat-resistant gloves labeled Made in China was asbestos. The lab answered 89 percent chrysotile by weight, and the listing never said so.

Nutrition & Food

Microplastics Make Tissue-Damaging Radicals in Water, No Sunlight Required

With no light, heat or catalyst, water turned the surfaces of six common microplastics into a source of hydroxyl radicals in lab tests, and the plastics that made the most radicals ruptured the most red blood cells.

Investigations

Women Who Cleaned Lost Lung Function at a Pace Compared to Smoking 10 to 20 Cigarettes a Day

Over 20 years, women who cleaned at home or for a living lost lung function faster than women who didn't. Tested scented products gave off carcinogens their labels never named, and single-chemical safety limits weren't built for the mixture under your sink.

Metabolic & Weight

When the Fat Comes Off, DDT's Half-Century-Old Residue Pours Back Into the Blood

Bariatric patients who shed 45 kilograms saw their blood levels of DDE, the breakdown product of DDT, more than double. The fat we're told to lose has been holding industrial chemicals since the 1970s.

Investigations

We Were Told to Disinfect Everything. The Chlorine Gas Calls Never Came Back Down.

US poison centers logged a 39.8 percent jump in chlorine gas exposures the year disinfection messaging peaked. Through 2022 here and 2025 in France, the numbers never came back down.

Metabolic & Weight

Heat Doubled the Odds of a First Kidney Injury in Taiwan, and Sugary Drinks May Feed the Damage

Across 141,934 first-time kidney injury admissions in Taiwan, the odds doubled on 34°C days and peaked the same day the heat hit. In mice, rehydrating with fructose made heat damage worse.

Infectious Disease

The 'Pac-Man' Enzyme That Eats Bioplastic Also Breaks Down Penicillin

Konstanz researchers pulled an enzyme from forest soil that digests an experimental bioplastic and also cuts open penicillin. The press release says every bioplastic completely degraded. The paper's carbon numbers and the intact buried films say otherwise, and nobody put the gene in a living bacteri

Investigations

Your Country's Estimated Heat Death Toll Depends on Which Heat Metric the Modelers Picked

Japan recorded 1,522 heatstroke deaths in 2020. One model called that unusually high; a better-fitting one put it inside the expected range. Europe's estimated heat tolls bend to the same kind of choice.

Investigations

In Cancer Alley, the Most Polluted Air Came With More Than Four Times the Odds of a Newborn Heart Defect

Among Louisiana mothers without private insurance, the heaviest modeled industrial air toxics tracked with 4.29 times the odds of a baby born with a heart defect. The scientist who led the work says Tulane gagged her pollution research.

Autoimmune & Inflammation

Pesticides Outlawed in the 1970s Are Still in Women's Blood, and They Track With Chronic Inflammation

French scientists screened 45 banned or barely-regulated chemicals in 468 women's blood. Two pesticides cancelled decades ago still tracked with elevated inflammation, and the PFAS quietly pushed an immune signal down.

Investigations

A Memphis Team Linked Tap-Water Fluoride to Kids' Testosterone, Sodium, and Uric Acid

In 4,470 American children, each unit of predicted plasma fluoride from tap water tracked with a testosterone geometric mean ratio of 0.49, plus higher serum sodium and uric acid. The authors declared no external funding.

Autoimmune & Inflammation

The 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 & Weight

Where 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.

Investigations

An '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.

Nutrition & Food

They Drew Blood From 719 Women and Children in Rural Bangladesh. Every Sample Had at Least Two Mold Toxins.

Every one of 712 whole-blood samples from a cohort of 719 rural Bangladeshi women and children carried at least two mold toxins, and 84 percent of participants carried three or more, including one the liver converts into a carcinogen.

Metabolic & Weight

Arsenic's 'Detox' Pathway Has a Catch: The Workers Who Finished It Had Higher Blood Pressure

In 393 young Central American farmworkers carrying arsenic in their urine, the men whose bodies most efficiently converted it to DMA had systolic pressure up to 7 mmHg higher. The textbook calls that step detoxification.

Infectious Disease

Weathered 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.

Nutrition & Food

All 719 Blood Samples Carried Mold Toxins, and the Youngest Children Carried the Riskiest Kidney Dose

Researchers tested the blood of 719 women and young children in rural Bangladesh. Ochratoxin A turned up in every single one, and modeling put up to 99 percent of the children over the line toxicologists use to flag a cancer-risk exposure.

Metabolic & Weight

Fluoride and Kids' Hearts: The Reassuring Study Tested Water Below What US Taps Are Told to Add

Researchers measured fluoride and heart risk in 161 Iranian children, and the main analysis found no significant link. But they drank water below the level US taps are told to add, and a different adjustment flipped the numbers.

Brain & Aging

Banned in 1979, 'Legacy' PCBs Are Now Tied to Shorter Telomeres in Children

Dioxin-like PCBs left American factories decades ago and never left children's bodies. New research traces how they may erode the protective caps on kids' chromosomes, and may help explain lower cognitive scores.

Investigations

Canada Went Looking for the Forever Chemicals Nobody Tracks and Found a Dozen of Them in Women's Blood

Scientists went hunting for the replacement and precursor PFAS almost nobody measures. In Canadian women's blood they found a dozen of them, riding alongside the 'banned' legacy chemicals that still turn up in nearly everyone.

Brain & Aging

They Measured the Forever Chemicals in the Umbilical Cord Itself. The Babies With the Most Scored Lower at Two.

Scientists skipped the usual stand-in and measured the forever chemicals in the umbilical cord blood itself. By age two, the babies carrying more of them scored lower on communication and motor development, and the companies that made these chemicals knew the risk for decades.

Investigations

Feed These Bacteria a Splash of Glycerol, and 95% of the Uranium Leaves the Water

Microbes in a flooded German uranium mine turned 95 percent of the dissolved metal into an iron compound that held together when oxygen returned, the exact failure that has always defeated standard cleanup.