Why has mugwort been hung on Chinese doors for 2,000 years?

Mugwort has been hung on Chinese doors for more than 2,000 years. Today, it appears in skincare products, wellness practices and moxibustion treatments around the world. But before it gained global attention, why was it placed in doorways? A 2024 chemistry study offers one explanation – not proof of every traditional claim, but a reminder that many traditions begin with observation.

0:00 The Herb on the Door 0:08 Mugwort Goes Global 0:28 Origins in Ancient China 0:40 The “Poison Month” 0:56 From Ritual to Remedy 1:04 Can Mugwort Repel Mosquitoes? 1:13 A 2024 Chemistry Study 1:31 The Compound: Intermedeol 1:38 What the Lab Tests Found 1:52 What Science Can—and Can't—Say 2:00 An Ancient Practice, A Modern Clue 2:14 Before Science Had the Words

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