Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Oriental arborvitae (Platycladus orientalis, also known as Thuja orientalis) has a long history of use in traditional Chinese medicine (TCM). In TCM, the seeds (often called Bai Zi Ren) are used to "nourish the heart," calm the spirit, and are sometimes included in formulas that target what would broadly be considered the "glandular system" in Western terms, particularly to address issues related to stress, sleep, and emotional balance. However, this is based primarily on traditional energetic and organ system concepts that do not map directly onto the Western glandular (endocrine) system. There is little to no direct scientific evidence that oriental arborvitae has significant effects on the glands or hormones of the human body as understood in modern physiology. Some animal and in vitro studies have examined its sedative, antioxidant, and neuroprotective effects, but these do not specifically validate its use for supporting the glandular system. Therefore, its use is justified primarily by tradition, not by robust scientific data. The evidence rating is moderate for traditional use (2/5), but very limited for scientific validation regarding glandular support.

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