Sanskrit Verse
Concept described contextually
— (Charaka & Sushruta Samhitas)
Explanation
Upadhatus are the secondary or accessory tissues that are formed as by-products during the transformation of one Dhatu to the next. They provide support and perform specific functions but do not nourish other tissues. Examples include Stanya (breast milk) and Artava (menstrual fluid) from Rasa Dhatu, and Kandara (tendons) and Sira (vessels) from Rakta Dhatu.
Clinical Importance
The health of the Upadhatus is an indicator of the health of their parent Dhatus. For example, issues with lactation (Stanya) point towards an imbalance in the Rasa Dhatu.