Ayurveda is a word originated from India. What it is called in other countries?

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'Ayurveda' is based on Herbs, and other natural sources. It is one of India's best traditional medical treatment. Same treatment is also available in China, Japan with some other name. And in western countries it is not familiar as in India. Why? what is term best used for this type of Medical treatment in western countries? and also at Africa and Arab countries?