DO_FlyBase_slim NCIthesaurus overnutrition obesity EFO:0001073 An overnutrition that is characterized by excess body fat, traditionally defined as an elevated ratio of weight to height (specifically 30 kilograms per meter squared), has_material_basis_in a multifactorial etiology related to excess nutrition intake, decreased caloric utilization, and genetic susceptibility, and possibly medications and certain disorders of metabolism, endocrine function, and mental illness. DOID:9970 MESH:D009765 MIM:601665 UMLS_CUI:C0028754 SNOMEDCT_US_2025_09_01:5476005 ICD9CM:278.00 disease_ontology NCI:C159658 ICD10CM:E66.9 OMIM mapping confirmed by DO. [SN].