Upadhatus

Subsidiary tissues such as breast milk, menstrual blood, tendons, and skin that arise as byproducts of the main seven dhatus.

Definition

Upadhatus are the secondary or subsidiary tissues that arise as byproducts during dhatu formation. Examples include breast milk and menstrual fluid (from rasa), tendons (from mamsa), and skin layers — they support the main dhatus but are not themselves part of the seven.

Source: Textbook of Ayurveda: Fundamental Principles, Glossary

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