Humans sometimes eat kaolin for health or to suppress hunger, a practice known as geophagy. It is unclear which factor is driving avian geophagy. Many animals eat soil or clay, a behaviour known as "geophagy". This behavior is known as geophagy. Children's predilection to engage in geophagy makes them more susceptible to worm infestations. Yellow-tailed woolly monkeys participate in geophagy, the consumption of soil. This habit of eating clay is also known as geophagy. A light hookworm infection causes abdominal pain, loss of appetite, and geophagy. Indigenous peoples around the world still use clay widely, which is related to geophagy. In some areas, orangutans may practice geophagy, which involves consuming soil and other earth substances. Geophagy has been observed in this species. The consumption of flowers, as well as soil (geophagy), was rarely observed in this study. Specifically, practicing geophagy is more likely to be associated with anemia or low hemoglobin. It also eats bark, sap, soil and red clay (see geophagy). In particular, geophagy is widespread among contemporary non-human primates.