How many cannibal tribes are in south America and how much information is on them?

The term "cannibal tribes" is often used to describe certain Indigenous groups in South America that have been historically reported to practice cannibalism, particularly in the Amazon rainforest region. However, the actual number of such groups is not definitively established, and many of these reports are based on historical accounts rather than contemporary practices. The information available on these tribes varies widely, with some receiving significant anthropological study while others remain less documented. It is important to approach this topic with sensitivity, recognizing the potential for misrepresentation and the impact of colonial narratives on Indigenous cultures.