regulates levels of monoatomic cation chemical homeostasis monoatomic ion homeostasis monoatomic cation homeostasis https://github.com/geneontology/go-ontology/issues/24455 Any process involved in the maintenance of an internal steady state of monoatomic cations within an organism or cell. Monatomic cations (also called simple cations) are cations consisting of exactly one atom. cation homeostasis GO:0055080