Korea · Dongui Bogam (1613)
Sasang typology and Hanbang herbal tradition — a constitutional approach to health developed over millennia.
Traditions
Wellness marketing invokes ancient authority constantly, and almost nobody checks it. We opened the primary texts — Culpeper's herbal of 1653, the Sushruta Samhita, Li Shizhen's Bencao Gangmu, the Dongui Bogam and the Tibetan canon — and looked up five of those claims.
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Sound & Vibration
A century-old auditory illusion has become a favorite pre-surgery calming trick, and the research on it is more specific, and more interesting, than the internet's sleep playlists suggest.
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Surroundings & Rhythm
Across cultures and continents, the advice about sleep and heat keeps pointing the same direction: too warm is the real enemy, and your bedroom temperature is doing more to your night than you probably realize.
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Nutrition & Food
Your cells listen to how much you sleep before they decide how well to handle sugar the next day.
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Surroundings & Rhythm
The switch that keeps you awake at night isn't just a screen. It's ordinary room light, and your body has been reading it as daytime for as long as electric light has existed.
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Natural Beauty
Skip a few nights of real sleep and your skin doesn't just look tired, it actually loses ground it can't easily earn back.
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Longevity
Scientists have spent two decades tracking millions of sleepers, and the finding that keeps surprising them isn't about too little sleep. It's about too much, and about something even more basic than hours: whether you go to bed at the same time at all.
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Sound & Vibration
Millions hit play on a "sleep music" playlist every night, and it turns out the science is more interesting, and more honest, than a simple yes.
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Breath & Energy
A handful of slow breaths before bed keeps showing up as a small, unglamorous, and surprisingly well-tested way to fall asleep easier and sleep deeper.
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Therapies
A hot soak an hour or two before lights-out is one of the few sleep tricks with real numbers behind it, though the old healers who wrote about bathing meant something else entirely.
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Movement & Body
Movement can help you sleep better, but a hard evening workout too close to bedtime may quietly work against you.
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Mind & Psyche
You can practice a skill or study a list of words all day, but the part of learning that sticks may only happen after you close your eyes.
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Surroundings & Rhythm
Long before anyone had a name for it, healers noticed that when you sleep matters as much as how long you sleep. Science is finally catching up.
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Movement & Body
An old European proverb and a stack of modern trials agree on something surprisingly specific: when you walk matters almost as much as whether you walk at all.
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Longevity
Long before anyone measured metabolic rate in a lab, six different healing traditions independently landed on the same rule: leave the table a little hungry.
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Herbs & Plants
Cultures on opposite ends of the world reached for the same knobby root to calm swollen joints, centuries before anyone knew what a gingerol was.
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Herbs & Plants
This warming spice has soothed bloated, cold, sluggish bellies across seven healing traditions, and modern gut research is finally starting to peek inside to see why.
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Herbs & Plants
A kitchen spice with a centuries-old reputation for warming the gut is now being tested for something more specific: keeping blood sugar in check.
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Herbs & Plants
Long before it was a candy flavor, licorice root was the go-to fix for a raw, scratchy throat, and modern operating rooms have quietly put that old habit to the test.
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Mind & Psyche
Mindfulness gets sold as a cure-all, but the real neuroscience behind it is narrower, stranger, and more interesting than the wellness-industry pitch.
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Women's Health
There's a hidden hammock of muscles doing quiet work every time you laugh, sneeze, or lift something heavy — and most of us never think about it until it stops cooperating.
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Nutrition & Food
We treat calcium like a settled question — but the research reveals a mineral that's far more interesting, and more complicated, than the supplement aisle lets on.
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Nutrition & Food
A quarter of your body's magnesium lives inside your muscles — but does swallowing more of it actually do what the supplement bottles promise?
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Nutrition & Food
A famous 11-center eye trial put vitamin C in the spotlight for aging eyes — here's what the evidence really says, and where it stops.
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Therapies
An ancient Ayurvedic ritual claims your feet and your eyes are connected — and one small clinical study decided to test it.
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Natural Beauty
The idea that glowing skin begins in the gut isn't just K-beauty marketing — there's emerging science behind feeding your skin from the inside out.
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It is close enough to quote its neighbour word for word, and different enough to be worth reading separately. The Dongui Bogam, compiled by the physician Heo Jun in 1613, reproduces whole passages from the Chinese Su Wen — the four-season sleep timing arrives unchanged — and openly credits the Ling Shu where it borrows. What it adds is clinical detail the Chinese texts leave out: it gives the sugar disease its own fuller picture, gives bone its own chapter, and answers the failing eye with seeds rather than with the Chinese remedies. It is a compilation with an argument, not a copy.
Of thirty-three claims we checked, two were confirmed, eleven had partial support, five were refuted, and fifteen had never been tested. The untested group is the largest, which is the same shape we find in most of the traditions here and says more about what research has bothered to ask than about the tradition. Worth noting alongside it: five refutations out of thirty-three is a relatively high rate, and it comes from the Dongui Bogam being detailed enough to be pinned down.