Research reviews · Health spotlights
Articles
Evidence on mold, indoor air quality, and how what you breathe affects how you feel.
Dry Cleaner Downstairs? Indoor Air Testing for Perc
Dry-cleaning solvent averaged 778 ug/m3 in apartments above two shops and ran high in a day care with no odor. Why indoor air quality tests beat a sniff.
Read article →Mold Testing: Read Indoor Air Against Outdoor Air
In 1,717 US buildings, indoor mold counts were at or below outdoors in 85%. How to read a mold test: indoor vs a same-day outdoor sample, not one number.
Read article →New Flooring Smell? Formaldehyde, Air Filters and Testing
CDC says air filters generally don't lower formaldehyde from new flooring. Its corrected model put levels about 3 times higher. What helps, when to test.
Read article →Bathroom Humidity After a Shower: Is Your Fan Enough?
In 64 homes, saying you always ventilate did not mean a measurably drier bathroom. Median humidity was 67%. How to check yours before mold gets a start.
Read article →Gas Water Heater Backdrafting: Exhaust in Your Basement
In 10 homes, every chimney-vented gas water heater spilled exhaust at startup, and 5 of 6 long spills hit the home with the shortest chimney. What to do.
Read article →Does Vinegar Kill Mold? A Lab Test of 5 Common Sprays
In a lab test, vinegar held back 1 of 2 common indoor molds and 70% ethanol held back neither. Why the EPA says killing mold isn't enough, and what to do.
Read article →Cold House, Mold Risk: Why Cold Bedrooms Get Damp in Winter
In low-income English homes, those where bills were hard to pay had significant mold about twice as often, 14.4% vs 7.6%, and cold bedrooms ran damper.
Read article →Room-by-Room Mold Testing vs One Sample: What a Study Found
In a 67-home study, single mold samples were right about 82% of the time; three per home, two agreeing, sorted 21 of 22. Why more than one sample helps.
Read article →Mold Testing: What a DIY Test Dish Can and Can't Tell You
Mold testing with a DIY dish: in one study, fall dishes averaged 25 colonies in moldy buildings and 26 in clean ones. Measured air samples did better.
Read article →Radon Mitigation System: Retest It Every Two Years
In a 10-year study of 12 mitigated homes near Spokane, one failed fan let a basement climb from about 3 to 18 pCi/L. Why every radon system needs a retest.
Read article →Mold Testing After Remediation: What a Pass Looks Like
After mold remediation, successfully cleaned rooms had about half the airborne mold of an untouched room. Why one number can't tell you the job worked.
Read article →Formaldehyde in New Homes: Why to Test the Bedroom Too
In 20 of 66 newer California homes, bedroom formaldehyde ran over 10% above the living room. Why indoor air quality testing should include the bedroom.
Read article →Radon Test Between 3 and 4 pCi/L? Why to Test Again
In 158 Iowa homes, about 40% of winter radon tests reading 3 to 4 pCi/L averaged 4 or more over the year. Why a result just under 4 needs a second test.
Read article →Air Sealing and Mold: Less Mold, More Asthma in Tight Homes
In 944 adults, the most energy-efficient homes had less mold (35% vs 60%), yet more asthma doctor visits (28% vs 15%). What to check after air sealing.
Read article →Cannabis Smoke in the House: How Far It Spreads Room to Room
One joint smoked in a living room raised fine particles in every room of a two-story house, 4.4 times a cigarette. A shut bedroom door kept most of it out.
Read article →Gas Stove Benzene: How Far It Spreads Through Your Home
In six homes, a gas oven raised benzene in the farthest bedroom 5 to 70 times over, and in three it stayed above a health benchmark for five hours or more.
Read article →Wildfire Smoke Indoors: How Much Gets Into Your Home?
In 36 Seattle-area homes, indoor fine particles rose 73% during wildfire smoke events, and some homes took in far more than others. Here is what helps.
Read article →Attic Mold With No Leak? Why Northwest Roof Decks Get Wet
Test roofs in Vancouver, BC, with no leaks and unlimited venting stayed above 20% wood moisture all winter and grew mold. More attic vents will not fix it.
Read article →Mold Air Testing: Why an Outdoor Sample Is Required
In 11 homes with no mold problem, outdoor air held roughly 20 to 100 times more fungal material than indoor air. Nothing inside was specific to indoors.
Read article →Does Basement Air Come Upstairs? What the Tracers Show
In 61 Detroit homes, a median of 59% of winter living-room air came up from the basement. Here is what that means for the things you store down there.
Read article →Why Your Carbon Monoxide Detector Stays Silent at Low Levels
A quiet CO detector does not mean no carbon monoxide. Alarms must stay silent at 30 ppm, over 3x EPA's 8-hour standard. What that silence really tells you.
Read article →Damp Homes and Missed School Days: What the Data Shows
A UCL study linked English children's housing to their school records. Those in lower quality homes missed 15.5 more days across compulsory schooling.
Read article →Drying Laundry Indoors: The Biggest Moisture Source
A Korean field study weighed every household moisture source. One load of laundry dried indoors released more water than a shower, a bath and a day of cooking.
Read article →Mold Spore Counts Miss Fungal Fragments in Home Air
A 2002 chamber study found moldy surfaces release fungal fragments up to 320 times more numerous than spores, and spore counts cannot predict them.
Read article →Mold Without a Leak: The Humidity Threshold in Walls
A lab held 21 building products at 80 to 95% humidity for 12 weeks. Mold grew with no leak at all, and one board failed at 75-80% relative humidity.
Read article →Dishwasher Mold: What Really Grows on the Rubber Seal
Researchers swabbed 30 household dishwashers. 83% were positive for fungi, 57% at the rubber seal, and a heat-tolerant black yeast in 47% of machines.
Read article →Carpet Mold Without a Leak: Humidity and House Dust
Ohio State incubated carpet from three homes with no water added. Above 90% surface humidity it grew mold, and an Alternaria allergen rose 100-fold.
Read article →Mold Urine Tests: What a Positive Mycotoxin Result Means
A UK study found deoxynivalenol in 95-100% of urine samples from 79 healthy children and teens. CDC: no FDA-approved urine mycotoxin test exists.
Read article →Home Mold and Hypersensitivity Pneumonitis: 54 Cases
In 54 lung-clinic patients whose hypersensitivity pneumonitis traced to home mold, 90.7% had a chronic or recurring leak, not a one-time flood.
Read article →Mold After a Flood: Why a Slow Repair Tracks With Symptoms
8-10 months after Quebec's 2019 floods, 34.7% of flooded homes reported frequent ENT symptoms vs 14.6% of neighbors. Slow repairs tracked with symptoms.
Read article →Black Mold and the CDC Study That Did Not Hold Up
The odds ratio that made black mold famous was 9.8. CDC's own 2000 review of the Cleveland infant cluster reported reanalyses as low as 1.5. What that means.
Read article →Mold and COPD Flare-Ups: Vacuuming Beat Visible Mold
In 140 COPD patients, vacuuming weekly carried 5.41-fold adjusted odds of 4+ antibiotic courses. Visible mold on the wall showed no significant link.
Read article →Attached Garage Benzene: Vent It and Indoor Levels Fall 62%
An exhaust fan in the attached garages of 33 homes cut indoor benzene 62%, from 1.04 to 0.40 ug/m3, without changing the house's air exchange rate.
Read article →Secondhand Vape at Home: Bronchitis Risk in Young Adults
Secondhand nicotine vape at home tracked with 40% higher odds of bronchitis symptoms and 53% higher odds of breathlessness in 2,097 young adults, a Thorax study found.
Read article →Classroom Air and Test Scores: Does Ventilation Help?
In 3,109 students across 140 classrooms, rooms with more fresh air scored higher on math tests. What classroom ventilation data means for the air at home.
Read article →Which Molds Trigger Asthma Flare-Ups?
A meta-analysis of 7 studies found four common house molds raised asthma flare-ups 36-48% - but Cladosporium and Alternaria carried the signal.
Read article →Alternaria Mold and Severe Asthma: A Late-Summer Risk
In young asthma patients who suffered a respiratory arrest, 91% were allergic to Alternaria mold versus 31% of others. What the late-summer spore risk means.
Read article →Traffic Pollution and Childhood Asthma: The Indoor Risk
A review of 41 studies ties traffic soot to children developing asthma, about 8% higher odds per step of black carbon. The soot drifts indoors. What helps.
Read article →Workplace Mold and COPD: A Musty Office and Adult Lungs
A Finnish study tied workplace mold odor to triple the odds of Asthma-COPD Overlap in adults (OR 3.43); home mold showed no link. What it means for you.
Read article →Mold, Moisture Damage and Persistent Wheeze in Kids
Engineers inspected 344 children's homes: major moisture damage or visible mold more than tripled the odds of a persistent childhood wheeze tied to later asthma.
Read article →Does Home Mold Cause New Asthma? 16 Studies Weigh In
A meta-analysis of 16 forward-looking studies links home dampness and mold to developing new asthma - and trained inspectors saw far more than residents did.
Read article →Indoor CO2 and Thinking: Can Stale Air Dull Decisions?
A chamber study of 22 adults found decision-making declined as indoor CO2 rose from 600 to 2,500 ppm, levels a closed meeting room reaches within an hour.
Read article →Do HEPA Air Purifiers Help Child Asthma? What an RCT Found
A year-long randomized trial: HEPA cleaners cut bedroom particles about 60%, but the main child-asthma score didn't move. What actually helped, and why.
Read article →Home Mold and Child Asthma: Worse Control, Not Just Allergy
A study of 424 children found damp, moldy homes meant worse-controlled asthma and more urgent visits, even in kids who weren't allergic to mold.
Read article →Secondhand Smoke & Childhood Asthma: The Prenatal Link
A meta-analysis of prospective cohorts found smoking in pregnancy carried the largest childhood-asthma signal - about 85% higher odds (OR 1.85) in the youngest.
Read article →Mold Removal and Asthma: Evidence From a Randomized Trial
A South Wales randomized trial removed mold from 164 homes — breathing problems and reliever use fell in treated homes, even when the mold wasn't fully cleared.
Read article →Mold and Depression: Can a Damp Home Affect Your Mood?
A WHO study of 5,882 adults found damp, moldy homes carried 34-44% higher odds of depression - a link the researchers set out to debunk but couldn't shake.
Read article →Mold, Dampness and Repeat Infections: A 27-Year Study
A 27-year study of 2,568 people found damp or moldy homes had 15% more colds and 47% more chest infections, with risk rising the longer the damp lasted.
Read article →Range Hoods and Indoor Air: What Cooking Does to Your PM2.5
In 35 homes of children with asthma, never using the kitchen range hood meant 8.3% more time at unhealthy PM2.5 — an effect about the size of secondhand smoke.
Read article →Do Houseplants Clean Indoor Air? What the Research Says
A review of 12 chamber studies found the median houseplant clears just 0.023 m3 of air an hour — you'd need 10 to 1,000 plants per square meter to matter.
Read article →Wildfire Smoke and Your Lungs: Why Indoor PM2.5 Matters
A 14-year study of 1.6 million hospital visits found wildfire-smoke PM2.5 up to 10x more harmful to breathing than ordinary particles — and it gets indoors.
Read article →Damp Homes and Child Wheeze: Can Cleaning Fix It?
A study of 4,618 children found damp homes raised wheeze odds up to 1.90x, and ordinary cleaning and open windows didn't undo it. The fix is drying the house.
Read article →Bedroom Mold and Childhood Asthma: What Inspectors Found
A Finnish birth cohort of 398 children found home mold in the bedroom and living room, not the bathroom, tied to higher childhood asthma odds by age six.
Read article →Mold, Dampness and Kids' Sleep: What the Research Shows
A German study of 1,719 children tied home mold and dampness to worse sleep, with night waking about 2.5 times more likely. What it means and how to fix it.
Read article →Moldy Smell and Asthma After 50: The Odor You Can't See
A survey of 302 UK residents found a moldy odor you can't see went with 2.4x the odds of asthma after 50 — a stronger signal than visible mold. What it means.
Read article →5 Places Mold Hides in Vancouver, WA Homes
The most common hidden mold locations in Pacific Northwest homes, and how room-by-room air testing finds them before they spread.
Read article →Mold and Kids' Lungs: The 4 Common Molds That Matter
Across 15 studies of children under 5, four common indoor molds — Aspergillus, Penicillium, Cladosporium, Alternaria — carried the highest breathing risk.
Read article →Mold, Dampness & Asthma: 1 in 5 U.S. Cases Linked
Dampness and mold are tied to roughly 1 in 5 U.S. asthma cases in the published estimates. What the attributable-fraction research means for your home.
Read article →Mold and Rhinitis: Can Home Dampness Cause a Runny Nose?
Pooled studies link visible home mold and dampness to meaningfully higher odds of rhinitis — the runny, stuffy nose you might blame on pollen.
Read article →You can't see radon. You can measure it.
Pooled European data links higher indoor radon to more lung cancer, and the risk climbs sharply for smokers. You can't see radon, but you can measure it.
Read article →Mold in a baby's first year isn't just a smell
A seven-year birth cohort found mold exposure in a baby's first year tracked with higher odds of later childhood asthma. Why the timing matters most.
Read article →A gas stove isn't only a cooktop. It's 32% higher odds of childhood asthma.
A 41-study meta-analysis tied gas cooking to 32% higher odds of childhood asthma. Why kitchen NO2 builds up and how venting outside cuts the exposure.
Read article →For Patients Using Shoemaker's Protocol: How Does Real-Time Air Testing Fit In?
For Patients Using Shoemaker's Protocol: How Does Real-Time Air Testing Fit In — illumenair research review.
Read article →Why Real-Time Mold Inspection Is Changing IAQ Testing
How real-time mold inspection delivers airborne mold data in a single visit — no waiting days for lab results.
Read article →Portland, OR Mold Inspection: Real-Time Air Testing
real-time mold inspection for Portland, OR homes — fast, data-driven indoor air quality testing for a damp climate.
Read article →Ridgefield, WA Mold Inspection: Real-Time Air Testing
real-time mold inspection for Ridgefield, WA homes — same-day airborne mold data, room by room.
Read article →Vancouver, WA Mold Inspection: Real-Time Air Testing
real-time mold inspection for Vancouver, WA homes — fast, data-driven indoor air quality testing.
Read article →Is Mold Toxicity Really a Problem? A Clinical Perspective
Is Mold Toxicity Really A Problem A Clinical Perspective From A PMC Article — illumenair research review.
Read article →Health Spotlight: Mold Allergies and Your Overloaded Body
Health Spotlight Mold Allergies And Your Overloaded Body — illumenair research review.
Read article →Mold Safety Tip: Why Mold-Sensitive Occupants Should Avoid DIY Cleanup
Mold Safety Tip Why Moldsensitive Occupants Should Avoid DIY Cleanup — illumenair research review.
Read article →How Shoemaker's Protocol and Real-Time Air Testing Work Together
How Shoemakers Protocol And Realtime Air Testing Work Together — illumenair research review.
Read article →You Can't See Radon — You Can Measure It
You Cant See Radon You Can Measure It — illumenair research review.
Read article →Mold Safety Tip: Moisture Control Without Personal Exposure
Mold Safety Tip Moisture Control Strategy Without Personal Exposure — illumenair research review.
Read article →Health Spotlight: Validating Mold Sensitivity and How You Feel
Health Spotlight Validating Mold Sensitivity And How You Feel — illumenair research review.
Read article →The Runny Nose You Blame on Pollen May Be Your Walls
The Runny Nose You Blame On Pollen May Be Your Walls — illumenair research review.
Read article →For Medical Professionals Using Shoemaker's Protocol
For Medical Professionals Using Shoemakers Protocol — illumenair research review.
Read article →Mold, Mycotoxins, and a Dysregulated Immune System: What a 2021 Review Says
Mold Mycotoxins And A Dysregulated Immune System What A 2021 Review Says — illumenair research review.
Read article →Mold Inhalation, Innate Immunity, and Brain Symptoms: A Controlled Exposure Study
Mold Inhalation Innate Immunity And Brain Symptoms Insights From A Controlled Exposure Study — illumenair research review.
Read article →Health Spotlight: Mold Sensitivity and How You Feel
Health Spotlight Mold Sensitivity And How You Feel — illumenair research review.
Read article →Mold Safety Tip: Why You Should Avoid Cleaning Mold Yourself
Mold Safety Tip Why You Should Avoid Cleaning Mold Yourself — illumenair research review.
Read article →Chronic Inflammatory Response Syndrome (CIRS): What a 2024 Review Found
Chronic Inflammatory Response Syndrome Cirs And The Evidence For Treatment What A 2024 Review Found — illumenair research review.
Read article →