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Evidence That Challenges What You Think You Know

Counterintuitive scientific findings, verified and well-sourced. No clickbait. No sensationalism. Just the research.

A glass jar of golden honey catches warm afternoon light on a rustic wooden surface with dried herbs scattered nearby
🏥 Health

Doctors Dismiss Honey as Folk Medicine. An Oxford Meta-Analysis of 1,761 Patients Found It Relieves Coughs and Colds Better Than Standard Treatments.

A systematic review of 14 clinical trials at Oxford University found honey reduced cough frequency by 36% and cough severity by 44% compared with usual care, including over-the-counter medications and antibiotics. The finding arrives as antibiotic overprescription for viral infections accelerates one of the world's most dangerous public health crises.

Latest Research

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🎓 Education

Every Classroom Teaches the Lesson Before Assigning Problems. A Meta-Analysis of 53 Studies Found Students Learn More Deeply When They Struggle and Fail First.

A meta-analysis of 53 studies and 166 comparisons found that students who attempt challenging problems before receiving instruction develop significantly greater conceptual understanding and transfer ability than those taught the traditional way.

July 13, 2026 10 min read ⚡⚡⚡ 3/5
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🍽️ Nutrition

Millions Follow the 16:8 Rule: Eat for Eight Hours, Fast for Sixteen, Lose More Weight. A Year-Long NEJM Trial Found the Fasting Window Adds Nothing.

A randomized trial assigned 139 adults with obesity to calorie restriction with an eight-hour eating window or calorie restriction alone. After 12 months, the fasting group lost 8.0 kg and the non-fasting group lost 6.3 kg — a difference that was not statistically significant.

July 12, 2026 10 min read ⚡⚡⚡ 3/5
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🏥 Health

Every Parent Limits Screen Time to Protect Their Child's Eyes. A Randomized Trial of 1,903 Children Found That Adding 40 Minutes of Outdoor Time Cut Nearsightedness by 23%.

A cluster randomized trial added 40 minutes of outdoor activity per school day. Over three years, myopia incidence dropped from 39.5% to 30.4%. The mechanism: retinal dopamine release triggered by bright daylight that indoor lighting can't activate.

July 11, 2026 10 min read ⚡⚡⚡ 3/5
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🧠 Psychology

For 300 Years, Doctors Classified Nostalgia as a Potentially Fatal Disease. Seven Studies Found It Actually Strengthens Mental Health.

In 1688, a Swiss physician coined "nostalgia" as a neurological disease that could kill homesick soldiers. A seven-study investigation found it actually bolsters social bonds, elevates self-regard, and generates positive affect.

July 10, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🎓 Education

Speed Reading Apps Promise 1,000 Words per Minute. A Review of Decades of Eye-Tracking Research Found the Entire Premise Is Biologically Impossible.

A comprehensive review published in Psychological Science in the Public Interest synthesized decades of eye-movement research and concluded that there is no way to dramatically increase reading speed without proportional comprehension loss.

July 9, 2026 9 min read ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Everyone Told You to Watch Your Mouth. Six Experiments Found Swearing Increases Pain Tolerance — but Frequent Swearers Get Almost No Benefit.

A repeated-measures experiment at Keele University found that participants who repeated a self-selected swear word could endure ice water for an average of 31 seconds longer than when using a neutral word. Replicated across six studies including cross-cultural validation — but habitual swearers show a diminished response.

July 8, 2026 9 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Your Doctor Worries About Your Weight. Not Your Friendships. A Meta-Analysis of 308,849 People Found Social Isolation Is Deadlier Than Obesity.

Across 148 prospective studies spanning an average of 7.5 years, people with stronger social relationships had 50% higher odds of survival than those with weaker ties.

July 7, 2026 10 min read ⚡⚡⚡⚡ 4/5
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📊 Social Science

The Most Famous Finding in Social Psychology Says Bystanders Won't Help. Surveillance Footage from Three Countries Found They Intervene 91% of the Time.

An analysis of 219 surveillance videos from Amsterdam, Cape Town, and Lancaster found that at least one bystander stepped in during 9 out of 10 public conflicts, with more bystanders increasing the likelihood of help.

July 6, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Humans Are Overconfident About Almost Everything. Five Studies Found the One Exception: After Conversations, People Systematically Underestimate How Much Others Liked Them.

Five studies at Cornell, Harvard, Yale, and Essex tracked strangers, workshop attendees, and college suite mates. In every sample, participants believed they made a worse impression than they actually did, and the error lingered for nine months. Third-party observers could see the warmth that participants themselves missed.

July 5, 2026 9 min read ⚡⚡⚡ 3/5
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🏥 Health

BMI Guidelines Say Overweight Is a Health Risk. A JAMA Meta-Analysis of 2.88 Million People Found Those Classified as Overweight Were Less Likely to Die Than Those at 'Normal' Weight.

A systematic review of 97 prospective studies encompassing more than 2.88 million individuals and 270,000 deaths found that overweight adults (BMI 25–30) had 6% lower all-cause mortality than those at "normal" weight, while only severe obesity (BMI ≥ 35) carried significantly higher risk.

July 5, 2026 10 min read ⚡⚡⚡ 3/5
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💰 Economics

Everyone Believes Expensive Wine Tastes Better. In 6,175 Blind Tastings, the Correlation Between Price and Enjoyment Was Negative.

A landmark study tracked 506 adults tasting 523 different wines without knowing the prices. Non-experts rated expensive wines slightly lower, and a companion fMRI study showed why the price tag works: it activates the brain's pleasure center, making identical wine taste better when you think it cost more.

July 3, 2026 10 min read ⚡⚡⚡ 3/5
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🧠 Psychology

Police, Judges, and Federal Agents Are Trained to Spot Liars. A Meta-Analysis of 206 Studies Found They Perform No Better Than Untrained College Students.

A meta-analysis of 24,483 human judges across 206 experiments found that people detect lies at 54% accuracy, where 50% is chance. The breakdown is worse than it sounds: humans catch only 47% of lies while correctly identifying 61% of truths. Trained professionals show no meaningful advantage.

July 1, 2026 9 min read ⚡⚡⚡⚡ 4/5
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🧬 Biology

Parents Sanitize Everything to Protect Their Children. Amish Children Who Grow Up in Barn Dust Have One-Quarter the Asthma Rate of Their Genetically Similar Neighbors.

Two farming communities with shared ancestry and nearly identical lifestyles showed a fourfold gap in childhood asthma. The difference traced to barn dust: when researchers blew Amish house dust into mice, it prevented allergic asthma through innate immune signaling. Hutterite dust did nothing.

June 30, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🍽️ Nutrition

Artificial Sweeteners Were Assumed to Be Metabolically Inert. A Randomized Trial of 120 Adults Found Saccharin and Sucralose Impaired Blood Sugar by Disrupting the Gut Microbiome.

A randomized controlled trial gave 120 healthy adults daily sachets of saccharin, sucralose, aspartame, or stevia for two weeks at doses below the FDA safety limit. Saccharin and sucralose significantly impaired glycemic responses through microbiome-mediated changes confirmed by fecal transplant into germ-free mice.

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🍽️ Nutrition

Everyone Warns You That Spicy Food Will Ruin Your Stomach. A Meta-Analysis of 570,762 Adults Found Regular Chili Pepper Consumption Reduces Mortality Risk by 12%.

A systematic review pooled four large prospective cohort studies from China, the United States, Italy, and Iran. Regular chili pepper consumers had a 12% lower risk of all-cause death, a 17% lower risk of cardiovascular death, and the protective effect held regardless of diet quality.

 A lit candle on a worn wooden windowsill with soft golden morning light streaming through the glass and a peaceful meadow beyond
🧠 Psychology

Everyone Imagines Dying as Dreadful. An Analysis of 2,616 Blog Posts by Terminal Patients Found Their Words Grew More Positive as Death Approached.

Researchers compared blog posts of terminally ill patients and last words of death-row inmates with the imagined writings of healthy people. The dying used fewer negative-emotion words and more positive ones than the healthy predicted, and patients' positivity increased as death drew nearer.

June 27, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

One in Three Americans Sleeps Six Hours a Night and Feels Fine. A Controlled Experiment Found Their Brains Worked as Poorly as if They'd Been Awake for Two Days Straight.

A dose-response study at the University of Pennsylvania restricted 48 healthy adults to four, six, or eight hours of sleep per night for 14 consecutive days. The six-hour sleepers developed the same level of cognitive impairment as subjects who hadn't slept at all for 48 hours.

June 25, 2026 10 min read ⚡⚡⚡ 3/5
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🧬 Biology

Addiction Hijacks the Brain So Nothing Else Matters. NIH Researchers Found That Even 'Addicted' Rats Chose a Friend Over Methamphetamine Every Time.

Across five experiments involving over 100 rats, NIH researchers gave animals a lever for drugs and a lever for social interaction with a peer. Every time, regardless of sex, drug class, dose, or DSM-IV-based addiction score, they chose the friend.

June 24, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Therapists Tell You Never to Suppress Negative Thoughts. A Cambridge Study of 120 People Across 16 Countries Found Suppression Training Reduced Depression for Three Months.

A randomized trial trained 120 adults to suppress fearful thoughts over three days. No rebound effects occurred. Instead, suppression reduced anxiety, negative affect, and depression, with the largest benefits appearing in the most symptomatic participants.

June 23, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Your Teacher Told You to Stop Fidgeting. A 12-Year Study of 12,778 Women Found Fidgeting Eliminated the Deadly Risk of Prolonged Sitting.

Among low fidgeters, sitting seven-plus hours a day raised mortality risk by 30%. Among high fidgeters, the same amount of sitting carried no increased risk at all. Controlled lab experiments confirmed the mechanism: rhythmic leg movements during sitting maintain arterial blood flow and preserve endothelial function.

June 22, 2026 10 min read ⚡⚡⚡ 3/5
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🏥 Health

Your Mother Told You Cold Would Make You Sick. A Randomized Trial of 3,018 Adults Found Cold Showers Cut Sick Days by 29%.

The largest randomized controlled trial of cold showering assigned 3,018 Dutch adults to finish their daily showers with 30, 60, or 90 seconds of cold water for 30 days. All three groups showed the same result: a 29% reduction in sick days from work. The duration didn't matter. And 91% chose to keep going.

June 21, 2026 9 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Pediatricians Told Parents to Keep Peanuts Away from Babies Until Age Three. A Trial of 640 Infants Found That Feeding Them Peanuts Early Cut Allergy by 81%.

The LEAP trial randomly assigned 640 high-risk infants to consume or avoid peanuts from infancy to age 5. Peanut allergy developed in 13.7% of avoiders but only 1.9% of consumers. Follow-up to age 12 confirmed the protection lasted, forcing a complete reversal of the guidelines that had been wrong for 15 years.

June 20, 2026 9 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Every Instinct Says to Fight Cancer with Surgery. A 15-Year Trial of 1,643 Men Found That Monitoring Prostate Cancer Achieves the Same Survival Rate.

The ProtecT trial randomly assigned 1,643 men with localized prostate cancer to active monitoring, surgery, or radiotherapy and tracked them for 15 years, finding no significant difference in cancer-specific survival between doing nothing and doing everything.

June 19, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Every University Adds Trigger Warnings to Protect Students. A Meta-Analysis of 7,000 Participants Found They Increase Anxiety Without Reducing Distress.

A preregistered meta-analysis of all experimental research on trigger warnings found zero effect on emotional reactions (d = 0.02), zero effect on avoidance, and zero effect on comprehension. Their single reliable effect: a small-to-medium increase in anticipatory anxiety.

June 18, 2026 9 min read ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Everyone on Your Train Is Avoiding Everyone Else. Nine Experiments Found They'd All Be Happier If They Talked.

Nine field experiments randomly assigned over 800 Chicago commuters to connect with a stranger, sit in solitude, or commute normally. Those who talked reported the most positive experience. Every commuter predicted the opposite.

June 17, 2026 8 min read ⚡⚡⚡ 3/5
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💰 Economics

Paying Blood Donors $7 Should Have Increased Supply. In a Swedish Field Experiment, It Cut Female Donations Nearly in Half.

A randomized field experiment offered potential blood donors SEK 50 (~$7). Among women, willingness to donate dropped from 52% to 30%. Allowing them to redirect the payment to charity restored the rate to 53%.

June 14, 2026 9 min read ⚡⚡⚡ 3/5
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🏥 Health

Everyone Chases 10,000 Steps a Day. That Number Was a 1965 Marketing Slogan. A Meta-Analysis of 226,889 People Found You Need Fewer Than 4,000.

A meta-analysis of 17 cohort studies found that mortality benefits from walking begin at roughly 4,000 steps per day, with each additional 1,000 steps reducing all-cause mortality by 15%. The famous 10,000-step target originated as a Japanese pedometer brand name, not a scientific recommendation.

June 13, 2026 9 min read ⚡⚡⚡ 3/5
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🧠 Psychology

Every Parent Worries About Screen Time. A Study of 355,358 Adolescents Found It Explains Less of Their Well-Being Than Wearing Glasses or Eating Potatoes.

Using a novel statistical method that tested every plausible analytic path through three massive datasets, Oxford researchers found that digital technology use accounts for at most 0.4% of the variation in adolescent well-being, an effect so small that potatoes and corrective lenses have comparable or larger negative associations.

June 12, 2026 10 min read ⚡⚡⚡ 3/5
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🎓 Education

80% of Americans Believe Music Lessons Make Kids Smarter. A Meta-Analysis of 54 Studies and 6,984 Children Found the Effect Is Zero.

The belief that learning piano or violin boosts children's IQ, reading, and math skills has driven school policy and parenting decisions for three decades. A comprehensive meta-analysis found that when studies use proper controls, music training produces no cognitive or academic benefit whatsoever.

June 11, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Your Willpower Doesn't Run Out. Two Preregistered Studies With 5,672 Participants Across 59 Labs Found the 'Ego Depletion' Effect Is Essentially Zero.

The idea that self-control is a finite resource, backed by 600+ published studies and taught in every psychology textbook, collapsed when 59 laboratories ran coordinated replications. The observed effect was an order of magnitude smaller than the original meta-analytic estimate.

June 10, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Hospitals Spend Billions Making Patients Happy. A Study of 51,946 Adults Found the Most Satisfied Patients Were 26% More Likely to Die.

A nationally representative study found that patients rating their healthcare highest had greater hospital admissions, 9% higher drug expenditures, and 26% increased mortality risk. A 2019 replication with nearly 93,000 participants found an even stronger effect.

June 9, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Everyone Wants the Most Experienced Doctor. A Study of 736,537 Hospitalizations Found Patients of Older Physicians Had Higher Mortality.

A national analysis of Medicare hospital admissions found that 30-day mortality rose steadily with physician age, from 10.8% for doctors under 40 to 12.1% for those over 60. The effect disappeared for high-volume physicians.

June 8, 2026 10 min read ⚡⚡⚡⚡ 4/5
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🏋️ Fitness

Your Doctor Told You Running Would Ruin Your Knees. A Meta-Analysis of 125,810 People Found Runners Get Less Arthritis Than Couch Potatoes.

A systematic review of 25 studies across six countries found that recreational runners develop knee and hip osteoarthritis at barely one-third the rate of sedentary people. Competitive athletes do face higher risk. But for the tens of millions who jog a few times a week, the couch appears to be the bigger threat to their joints.

By James Haworth · June 5, 2026 · ⚡⚡⚡⚡ 4/5
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🧠 Psychology

52 Million Americans Take Acetaminophen Every Week. Two Double-Blind Trials Found It Also Reduces Their Empathy.

Acetaminophen is the most widely used drug ingredient in the United States. A pair of randomized controlled trials at Ohio State found it doesn't just numb your own pain. It numbs your response to everyone else's.

By Rebecca Liang · June 2, 2026 · ⚡⚡⚡ 3/5
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🧠 Psychology

Talking Through Trauma Right After It Happens Seems Obviously Helpful. A Cochrane Review of 15 Trials Found It Can Make PTSD Worse.

For two decades, organizations mandated that survivors of disasters, accidents, and violence sit down with a counselor within hours and relive what happened. Fifteen randomized trials found no benefit. Two found it caused harm.

By Daniel Koresh · June 1, 2026 · ⚡⚡⚡⚡ 4/5
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🏥 Health

Patients Who Knew They Were Taking Sugar Pills Still Got Better. A Meta-Analysis of 60 Trials Exposed the Paradox.

Sixty randomized controlled trials. 4,554 participants. Patients told the pills were sugar pills. They improved anyway — especially the sickest ones.

By Rebecca Liang · May 31, 2026 · ⚡⚡⚡⚡ 4/5
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⚖️ Policy

Medicare Penalized Hospitals for Readmitting Patients. A Study of 8 Million Cases Found It Increased Deaths.

The Hospital Readmissions Reduction Program fined hospitals nearly $2 billion for readmitting patients within 30 days. A JAMA study of 8.3 million Medicare hospitalizations found the policy was associated with roughly 10,000 excess deaths from heart failure and pneumonia.

By Marcus Reeves · May 29, 2026 · ⚡⚡⚡⚡ 4/5
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🏋️ Fitness

Athletes Swear by Ice Baths for Recovery. A 12-Week Trial Found They Cut Muscle Growth by Two-Thirds.

A randomized controlled trial of 21 strength-trained men found that 10 minutes of cold water immersion after every workout reduced muscle mass gains by 67%. A 2021 meta-analysis of eight studies confirmed the damage.

By James Haworth · May 28, 2026 · ⚡⚡⚡⚡ 4/5
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🏀 Sports & Statistics

NBA Playoff Series Go to Seven Games Less Often Than Math Predicts. The Rigging Theory Gets the Numbers Backward.

An original analysis of 345 best-of-7 series finds Game 7s occur 15% less often than probability models predict. The conspiracy theory relies on a decade-old mathematical error.

By Marcus Reeves · May 27, 2026 · ⚡⚡⚡⚡ 4/5
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🧠 Psychology

Rage Rooms Charge $50 to Smash Things. A Meta-Analysis of 154 Studies Found Venting Anger Makes It Worse.

A 2024 meta-analysis of 10,189 participants found that venting anger has an effect size of essentially zero. Deep breathing and meditation cut anger by a medium-large margin.

By Daniel Koresh · May 25, 2026 · ⚡⚡⚡⚡ 4/5
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📊 Social Science

We Reviewed 25 Counterintuitive Findings. One Pattern Explains Why Bad Ideas Survive Good Evidence.

Across 26 articles, more than 400 experiments, and over 5 million research subjects, a single structural failure keeps disproved beliefs alive.

By Marcus Reeves · May 24, 2026 · ⚡⚡⚡⚡ 4/5
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🏥 Health

Doctors Prescribed Bed Rest for Back Pain for Decades. A Landmark Trial Found It Made Recovery Slower.

A Finnish RCT of 186 workers found that those told to stay in bed recovered slowest. A Cochrane review confirmed it.

By Rebecca Liang · May 24, 2026 · ⚡⚡⚡ 3/5
Gloved surgical hands holding a laparoscopic instrument against a softly lit background of operating room monitors
🏥 Health

Surgeons Who Play Video Games Make 37% Fewer Errors and Operate 27% Faster

A study of 33 surgical residents found that those who played video games more than three hours a week committed 37% fewer errors and completed laparoscopic procedures 27% faster than their non-gaming colleagues.

By James Haworth · May 23, 2026 · ⚡⚡⚡ 3/5
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⚖️ Policy

Companies That Forced Workers Back to the Office Got Worse, Not Better. Three Studies Exposed the Damage.

An analysis of S&P 500 firms found no improvement in profits or stock value after return-to-office mandates. A separate study tracking 3 million workers found the best employees left first. A randomized trial found hybrid work cut attrition by a third with zero productivity loss.

By Marcus Reeves · May 22, 2026 · ⚡⚡⚡⚡ 4/5
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🏥 Health

The Largest Study of Alcohol and Lifespan Found That "Moderate Drinking" Doesn't Help You Live Longer

A meta-analysis of 107 cohort studies tracking 4.8 million people found that the apparent longevity benefit of one or two drinks a day vanishes entirely once you stop counting sick former drinkers as "abstainers."

By Rebecca Liang · May 22, 2026 · ⚡⚡⚡⚡ 4/5
A quiet village market scene at dawn with empty wooden stalls and scattered coins on a weathered counter
💰 Economics

Microcredit Was Supposed to End Poverty. Six Randomized Trials Across Four Continents Found It Doesn't.

A special issue of the American Economic Journal brought together six independent randomized controlled trials spanning India, Morocco, Ethiopia, Bosnia-Herzegovina, Mongolia, and Mexico. The combined evidence: microcredit modestly increases business activity but does not raise incomes, reduce poverty, or empower women.

May 21, 2026 8 min read ⚡⚡⚡⚡ 4/5
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🍽️ Nutrition

Breakfast Is Not the Most Important Meal of the Day — and Eating It May Make You Gain Weight

A Monash University meta-analysis of 13 randomized controlled trials found no evidence that breakfast aids weight loss. Breakfast eaters consumed 260 extra calories per day and weighed slightly more than those who skipped it entirely.

May 20, 2026 7 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

700,000 Knee Surgeries a Year. A Sham-Controlled Trial Found the Procedure Works No Better Than Placebo.

The Finnish FIDELITY trial randomized 146 patients with degenerative meniscal tears to arthroscopic partial meniscectomy or sham surgery. At 12 months, outcomes were identical. At 10 years, the surgery group had more osteoarthritis and three times the rate of knee replacement.

May 21, 2026 7 min read ⚡⚡⚡⚡ 4/5
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🍽️ Nutrition

Sugar Does Not Make Children Hyperactive — A Meta-Analysis of 23 Studies Found Zero Evidence

A JAMA meta-analysis pooling 23 double-blind, placebo-controlled experiments found that sugar has no measurable effect on children's behavior or cognitive performance. The "sugar high" persists as a cultural belief driven almost entirely by parental expectation.

May 21, 2026 7 min read ⚡⚡⚡⚡ 4/5
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💰 Economics

Poor Families Given $709 With No Strings Attached Spent Less on Alcohol, Not More

A randomized trial of 1,440 households in rural Kenya found that unconditional cash transfers raised consumption by 22%, increased assets by 61%, and improved psychological well-being, while spending on alcohol and tobacco did not increase.

May 20, 2026 8 min read ⚡⚡⚡⚡ 4/5
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🎓 Education

93% of Teachers Believe in Learning Styles. After Reviewing All the Evidence, Four Psychologists Found Almost None.

A landmark review examined 50 years of learning-styles research and found virtually no evidence that matching instruction to a student's preferred style improves outcomes.

May 20, 2026
An open notebook on a wooden desk surrounded by scattered highlighter pens with morning light filtering through a nearby window
🎓 Education

Highlighting and Rereading Are Nearly Useless: A Review of Hundreds of Experiments Found Only 2 of 10 Common Study Strategies Actually Work

A landmark review of 10 study techniques across hundreds of experiments rated highlighting, rereading, and summarization as low utility. Only practice testing and distributed practice earned the highest rating.

May 20, 2026 7 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Skipping a Single Night of Sleep Relieves Depression Faster Than Any Known Drug

A meta-analysis of 66 studies spanning 45 years found that acute sleep deprivation produces rapid antidepressant effects in roughly half of depressed patients.

May 20, 2026 7 min read ⚡⚡⚡⚡ 4/5
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🧬 Biology

Your Wounds Heal 60% Slower at Night Because Your Skin Cells Keep Their Own Clock

A study of 118 burn patients found nighttime injuries took 28 days to heal versus 17 for daytime burns, driven by circadian rhythms in individual skin cells.

May 20, 2026 6 min read ⚡⚡⚡⚡ 4/5
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⚖️ Policy

"Scared Straight" Programs Were Supposed to Deter Crime. Nine Randomized Trials Found They Increased It.

A Cochrane systematic review of 946 juveniles across nine experiments found that prison-visit deterrence programs raised the odds of reoffending by 68%.

 Sunlit room filled with rows of potted plants on shelves, light filtering through large windows
🌍 Environment

Your Houseplants Aren't Cleaning the Air. A 30-Year Review Found They'd Need to Outnumber Your Furniture 100 to 1.

A Drexel University review of 196 experiments across 12 studies found that potted plants remove VOCs so slowly that you'd need 10 to 1,000 plants per square meter to match basic ventilation.

May 20, 2026 6 min read ⚡⚡⚡⚡ 4/5
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💰 Economics

Daylight Saving Time Was Created to Save Energy. A Study of 7 Million Indiana Households Found It Does the Opposite.

A natural experiment exploiting Indiana's 2006 statewide adoption of DST found it increased residential electricity consumption by 1–4%, costing households $9 million per year.

May 20, 2026 5 min read ⚡⚡⚡⚡ 4/5
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💰 Economics

Billions Are Spent Teaching People About Money. A Meta-Analysis of 168 Studies Found It Explains 0.1% of Their Financial Behavior.

The most comprehensive meta-analysis of financial education research found that teaching people about compound interest, budgeting, and debt management accounts for essentially none of their actual financial decisions.

May 20, 2026 5 min read ⚡⚡⚡⚡ 4/5
Empty open office floor with rows of desks, a lone figure wearing headphones in the distance
📊 Social Science

Open Offices Were Designed to Boost Collaboration. A Harvard Study Found They Cut It by 70%.

Two Fortune 500 companies outfitted employees with sociometric sensors before and after converting cubicles to open plans. Face-to-face conversation plummeted while email and instant messaging surged.

May 20, 2026 5 min read ⚡⚡⚡⚡ 4/5
Scattered supplement pills on a wooden surface
🍽️ Nutrition

Taking Antioxidant Supplements Raises Your Risk of Dying

A Cochrane review of 78 trials and 296,707 participants found that beta-carotene and vitamin E supplements increase all-cause mortality.

May 20, 2026 5 min read ⚡⚡⚡⚡ 4/5
Mirror reflection showing distorted perspective
🧠 Psychology

Repeating "I Am Lovable" Made People With Low Self-Esteem Feel Worse

Experiments at the University of Waterloo found that positive self-statements backfired for those who needed them most.

May 19, 2026 5 min read ⚡⚡⚡⚡ 4/5
Lone figure with a notebook
📊 Social Science

Brainstorming in Groups Produces Fewer Ideas Than Working Alone

A meta-analysis of 20 studies found that brainstorming groups generate fewer ideas than the same number of people working independently.

May 19, 2026 5 min read ⚡⚡⚡⚡ 4/5
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🏋️ Fitness

Stretching Before Exercise Does Not Prevent Injuries

A systematic review of 25 RCTs found stretching had no injury prevention benefit, while strength training cut risk by over a third.

May 19, 2026 5 min read ⚡⚡⚡ 3/5
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🏋️ Fitness

Exercise Burns Far Fewer Calories Than You Think

A study of 332 adults across five populations found total energy expenditure plateaus above moderate activity. Your body compensates.

May 19, 2026 5 min read ⚡⚡⚡⚡ 4/5
Rows of jars stretching into the distance
🧠 Psychology

More Options Make People Less Likely to Choose — and Less Happy When They Do

Consumers were 10× more likely to buy jam when offered 6 options instead of 24. More choice led to worse decisions and lower satisfaction.

May 19, 2026 5 min read ⚡⚡⚡⚡ 4/5
Teenager playing peacefully
🧠 Psychology

The Largest Registered Study of Video Game Violence Found No Link to Aggression

A pre-registered Oxford study of 1,004 adolescents using objective violence ratings found zero relationship with aggressive behavior.

May 19, 2026 5 min read ⚡⚡⚡⚡ 4/5
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🏥 Health

Testosterone Prescriptions Dropped 48% After the FDA Warned the Therapy Causes Heart Attacks. A 5,246-Man Trial Found No Increased Risk.

A double-blind, randomized trial of 5,246 men at high cardiovascular risk found that testosterone-replacement therapy did not increase heart attacks, strokes, or cardiovascular death. The trial was ordered by the FDA after two flawed observational studies triggered a warning that suppressed prescribing for nearly a decade.

June 16, 2026 8 min read ⚡⚡⚡⚡ 4/5
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🌍 Environment

Cities Spent Billions Planting Trees to Beat the Heat. A Study of 761 Megacities Found That in Arid Regions, the Greenery Is Making Temperatures Worse.

The first global assessment of urban vegetation's thermal effects reveals a paradox: in 22% of the world's megacities, parks and green spaces absorb more solar heat than they can release through evaporation. During extreme heatwaves, grasslands fail to cool 71% of cities.

June 15, 2026 7 min read ⚡⚡⚡ 3/5
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🧠 Psychology

People Who Speak a Foreign Language Make Different Moral Choices. A Meta-Analysis of 38 Experiments Found the Language You Think In Reshapes What You Think Is Right.

A 2021 meta-analysis of 38 experiments found that people reasoning in a foreign language become significantly more willing to sacrifice one life to save five. The effect isn't about thinking harder. It's about feeling less.

June 8, 2026 8 min read ⚡⚡⚡⚡ 4/5
Two open books with different scripts resting side by side on a weathered oak desk in soft warm morning light
🧠 Psychology

You Think Most Clearly in Your Mother Tongue. A Meta-Analysis of 47 Experiments Found That a Foreign Language Actually Reduces Your Biases.

Six original experiments at the University of Chicago found that people shed the framing effect and loss aversion when they switch to a foreign language. A 2021 meta-analysis of 47 experiments confirmed: thinking in a non-native tongue makes you more rational, not less.

June 8, 2026 7 min read ⚡⚡⚡⚡ 4/5
A freshly mowed urban lot with young trees and a low wooden fence bathed in warm late-afternoon light
⚖️ Policy

A City Mowed the Grass on 541 Vacant Lots. Gun Violence Dropped 29% in the Poorest Neighborhoods.

A citywide cluster randomized trial in Philadelphia assigned 541 vacant lots to greening, trash cleanup, or no intervention. In neighborhoods below the poverty line, gun violence fell 29%, burglary fell 22%, and residents felt 58% safer going outside. The cost: about $1,600 per lot.

June 5, 2026 8 min read ⚡⚡⚡⚡ 4/5