The tribe had existed from the beginning. They are usually intelligent, innovative and self-sufficient, they do not use any modern technology at all. A typical example is the Mami family. They are one of the last fully isolated, urbanized tribes in the world. Yanomi has been isolated from society for over 100 years, but this situation is beginning to change. The city along the border between Brazil and Venezuela has expanded and occupies land of Yanomami. Along with the expansion of Brazil and Venezuela, gold miners have invaded tribal lands and destroy their environment and health.
In the mid - 1970 's, Galympeiros (a small independent gold miner) began entering Mamiya' s country. In the place where these Garin Peiros settled, they killed members of the Yanomami family in the land conflict. In addition, the Gallipeiros mining technology caused environmental deterioration. Despite the presence of the Federal agency FUNAI representing the rights and interests of indigenous peoples, tournaments are hardly protected by the government. In some cases, the government can be regarded as supporting the mining company to invade the land of Mami. In 1978, under the pressure of anthropologists and the international community, the military government enacted a plan to define land for Mami. However, these reserves are determined on the basis of Yanomami's lifestyle, the trading network, the land of a small "island" not considering sidewalks, and its boundary is determined only by concentration of deposits.
After the division of the Yanomami Province in 1992, the CCPY health plan, together with NGO URIHI (Yanomami's "Forest"), which is not functioning at the present time, educates Yanomami regional medical institutions to reduce the occurrence of malaria in Brazilian Yanomami did. . Between 1998 and 2001, malaria incidence in Brazilian Yanima Indian has decreased by 45%. In 2000, he sponsored a project to promote the fruit tree market grown in CCPY Hayami Mami. This project is aimed to help Yanomami move to an increasingly sedentary lifestyle due to environmental and political pressure. At the request of Yanomami leader, CCP founded a Portuguese-speaking Yanomami School in another company to help Yanomami learn Brazilian politics and learn international scenes to protect the rights of the land Did.