In Kuikuros People's culture, some dreams and sickness could put humans in contact with the itsekes spirits (sobrenatural spirits living in the forests and in the water's bottoms), to reestablish the balance, the order, the health.But if you born a Xaman, you can be relate with the itsekes spirits naturally.
They are many ethnics groups living Indigenous Park of the Xingu ,
on Mato Grosso State, from Brazil. I met the Kuikuro and the Yawalapiti People.
Yawalapiti's population were about only 208 people,
and Kuikuros were about 394, in 1999.