Mātrāśitīya Adhyāya , the 8th chapter of Ashtanga Hridayam Sutrasthana , is one of the most practical and important chapters for understanding how much food one should eat , how digestion works , and how an improper quantity of food becomes the root cause of disease . This chapter is essential for BAMS students , Ayurveda practitioners, and anyone who wants to understand the Ayurvedic approach to diet and digestion Ayurveda teaches that food is the foundation of life , but only when eaten in the right amount , at the right time , and in the right manner . Meaning of Mātrāśitīya Mātrā = proper quantity Āśitīya = related to eating So, Mātrāśitīya Adhyāya teaches the ideal quantity of food , how to judge it, and how it affects health. Ayurveda emphasizes that even the best food becomes harmful if eaten in the wrong quantity . Right Amount of Food (Matra) Ayurveda does not prescribe a fixed quantity for everyone. The correct amount depends on: ...