Nutrition
Spinach Has Five Times the Cadmium of Potatoes. Your Potato Serving Has More
Laboratory data for 943 foods. Compare 165 with observed eating-day portions, or download all 9,248 derived food–analyte profiles. Not a safety ranking.
Curiosity First. Evidence Always.
The most interesting questions often hide in plain sight. We challenge familiar assumptions about health, happiness and everyday life, and investigate what the evidence actually shows.
Mind & Well-being
Can a Country Make You Happier? What Rankings Miss
Finland tops the happiness rankings. But in one 22-country study, Egypt ranked 21st on one wellbeing measure and third on another. Can rankings guide a move?
Read the ArticleLatest Articles
Health & Medicine
Your First Blood Pressure Reading Isn’t a Verdict
Can repeat blood pressure readings change your category? NHANES data on 6,100 adults show how US and European rules differ. Explore our interactive calculator.
Longevity
Does Your Job Affect How Long You Live?
Does your job affect how long you live? Explore French life expectancy and Spanish occupational death rates, and what the evidence says about work itself.
Nutrition
What Time Is Breakfast, Really? Why the Clock May Be Misleading
Is breakfast at 10 a.m. early or late? Explore the wall clock, sleep timing and biological clock, and the limits of NHANES meal-timing research.
Sleep & Recovery
Coffee Can Follow You Into Sleep
Coffee may affect sleep even when you feel rested. What trials reveal about dose, timing, decaf, and why the 8.8-hour rule is not a safe cutoff.
From the evidence
Key takeaways from recent research on Mike's Balance.
Mind & Well-being
The World Happiness Report ranks life evaluation, not daily joy.
Its Cantril Ladder asks people to rate their life as a whole from 0 to 10 rather than measuring daily mood, laughter or stress.
Evidence from
Can a Country Make You Happier?
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Sleep & Recovery
Caffeine can alter your sleep even when you do not notice it.
In a small experiment involving 23 healthy young men, 400 mg of caffeine 12 hours before bed reduced deep sleep by about 21 minutes, with no statistically significant change in overall self-rated sleep quality.
Evidence from
Coffee Can Follow You Into Sleep
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Supplements
For healthy adults in ordinary conditions, daily electrolyte drinks have no established advantage over adequate ordinary drinking.
They can change short-term fluid retention, but a meaningful everyday health or performance benefit has not been established.
Evidence from
Do You Need Electrolytes Every Day?
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Supplements
Do You Need Electrolytes Every Day? What the Evidence Shows for Healthy Adults
Do healthy adults need electrolytes every day? We examine fluid retention, exercise, heat and the evidence behind routine electrolyte drinks.
Popular Articles
THE BIGGER PICTURE
Does Your Job Decide How Long You Live?
At 35, imagine two groups of 100 French men. Apply 2020–2022 death rates: 94 managers and senior professionals reach 65, but only 85 blue-collar workers do. Nine extra survivors. Is it the work itself, or the income, education and health people bring to it? The same question complicates comparisons of elite athletes across sports.
94/100Managers and senior professionals reaching age 65
85/100Blue-collar workers reaching age 65
Illustrative survival from age 35 to 65 for French men, applying 2020–2022 age-specific mortality rates. These figures do not measure the causal effect of occupation.
This Featured Article
What Actually Changes When You Move Abroad? Interactive Calculator
Use our interactive relocation calculator to compare purchasing power, work, life evaluation, healthy years, healthcare, bureaucracy and safety across 54 countries.
THE UNEXPECTED FINDING
Spinach Has More Cadmium. Until You Count the Portion
Spinach contains 5.1 times as much cadmium as baked potato per kilogram. Yet in modelled US eating-day portions, potato contributes 2.3 times more. Same foods, opposite ranking. Only the basis of comparison changed. Neither result tells you which food is safer. Our interactive atlas lets you compare 165 foods, including cases where the evidence is too uncertain to rank them.
5.1×More cadmium in spinach per kilogram
2.3×More cadmium in potato per modelled portion
FDA food measurements combined with US reported eating-day portions: 25 g raw spinach and 285 g baked potato. This compares amounts of cadmium, not food safety.
Recent Articles
Nutrition
How Much Water Should You Drink? What the Evidence Actually Shows
How much water should you drink? A data-driven guide to hydration, thirst, urine markers, food, exercise, heat, and when more water is not better.
Sleep & Recovery
Mouth Taping for Sleep: Does It Work, and Is It Safe?
Does mouth taping improve sleep or breathing? We review the trials, who may benefit, why nasal obstruction matters, and the safety risks.
Health & Medicine
White Noise vs Pink Noise for Sleep: What the Research Actually Shows
Does white or pink noise improve sleep? Research suggests the main benefit may be masking disruptive sounds, not directly improving sleep itself.
Sleep & Recovery
Are Naps Good for You? Health, Longevity, and the Best Nap Length
Are naps good for you? Short naps can improve alertness, but longevity benefits are unproven. See what studies say about 10–30 vs 60+ minutes.