we met aurelio ortiz, who calls himself one of the last kallawaya. >> we kallawaya know the medicinalflowers, leaves and fruits. i received my extensive knowledge about plants from my grandparents. look at this moss. you can cure many people who have been put in psychiatric wards with it. in traditional western medicine, you just call these people crazy. >> aurelio also has remedies for alzheimer's and cancer -- but he won't tell us exactly which ones. a patient from the capital city of la paz has arrived at his practice. aurelio welcomes the young man between stuffed cats, tinctures, herbs and roots. yasmani arze requested a ritual with coca leaves. ♪ >> i want to know from aurelio what i need to do to live a healthier life. and i need advice for my life, my emotional world and the future of my work. +++ based on the shape of the coca leaves, aurelio interprets whether someone will come into money, stay healthy, or be blessed with good fortune. but he also analyzes his patients' past. >> yasmani has endured emotional traumas. his wife cheated on him and he was in a car accident. both