According to Ayurveda, Stanya originates from Ahara rasa (the essence of digested food). Acharya Charaka states that the food consumed by a lactating mother is divided into three parts: one for the mother’s nourishment, one for the fetus (during pregnancy), and one for the formation of Stanya. Acharya Kashyapa elaborates that during pregnancy, Rakta dhatu (blood tissue) transforms to form milk, a process influenced by hormones and reflexes like prolactin and oxytocin in modern terms.
The quality and quantity of Stanya are profoundly affected by the mother’s diet, emotional state, and lifestyle. Formulations with herbs such as Shatavari (Asparagus racemosus), Vidarikanda (Pueraria tuberosa), and Yashtimadhu (Glycyrrhiza glabra) are traditionally prescribed to enhance milk production, known as Stanyajanana dravyas (galactagogues).