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The Vitamin D Trials Nobody Talks About
Two of the largest supplement trials ever run found almost nothing. Then the Endocrine Society withdrew the threshold that made half the country deficient in the first place.
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The eight-glasses rule is a sentence someone deleted
The 1945 document blamed for the rule said most of your water comes from food and that thirst is an adequate guide. Both sentences were cut. Here is what the evidence actually shows.
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Where the three-to-six-month emergency fund rule actually came from
The most repeated number in personal finance was set in 1996 by polling 156 advisers. Six million households of bank data suggest a very different answer.
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Stretching Barely Prevents Injuries. Strength Training Cuts Them by Two Thirds.
A meta-analysis of 26,000 participants ranked the injury-prevention strategies head to head. The one everybody does came last. The one almost nobody does came first, by a mile.
The 90% divorce prediction that was never a prediction
The famous accuracy figures are real, and they measure something other than prediction. What happens when a divorce model is finally tested on data it has not already seen.
The latte factor gets the arithmetic right and the mechanism wrong
His sum checks out to the dollar. But 85% of people are passive savers who ignore price incentives, and financial education explains 0.1% of the variance in behaviour.
Breakfast is not the most important meal of the day
The randomised trials point gently the other way. But the real story is the audit that found only 17% of citations to a key trial described its results accurately.
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Breakfast is not the most important meal of the day
The randomised trials point gently the other way. But the real story is the audit that found only 17% of citations to a key trial described its results accurately.
Where the three-to-six-month emergency fund rule actually came from
The most repeated number in personal finance was set in 1996 by polling 156 advisers. Six million households of bank data suggest a very different answer.
The 90% divorce prediction that was never a prediction
The famous accuracy figures are real, and they measure something other than prediction. What happens when a divorce model is finally tested on data it has not already seen.
What ‘just go for a walk’ leaves out
The evidence on exercise and depression is weaker than the headlines and more interesting than the sceptics allow. It points at structure and supervision, not walks.
Blue-Light Glasses: What the Cochrane Review Found
Seventeen randomised trials, and no reliable evidence that blue-filtering lenses reduce eye strain. The physics is the more interesting part: the lenses block roughly eight percent more blue light than the clear ones.
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The eight-glasses rule is a sentence someone deleted
The 1945 document blamed for the rule said most of your water comes from food and that thirst is an adequate guide. Both sentences were cut. Here is what the evidence actually shows.
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Blue-Light Glasses: What the Cochrane Review Found
Seventeen randomised trials, and no reliable evidence that blue-filtering lenses reduce eye strain. The physics is the more interesting part: the lenses block roughly eight percent more blue light than the clear ones.
Stretching Barely Prevents Injuries. Strength Training Cuts Them by Two Thirds.
A meta-analysis of 26,000 participants ranked the injury-prevention strategies head to head. The one everybody does came last. The one almost nobody does came first, by a mile.
Sugar Does Not Make Children Hyperactive. The Study That Proved It Tested the Parents.
A 1995 meta-analysis of 23 controlled trials found no effect. A year earlier, a smaller study had already explained why everyone believes otherwise — by giving every child a placebo and lying to their mothers.