title: Lack of energy may predict illness in older adults.  The condition called anergia is associated with higher rates of hospitalization and death.
mesh_terms: D000368:Aged; D005221:Fatigue / Q000150:complications / Q000209:etiology*; D005260:Female; D006801:Humans; D008297:Male; D012307:Risk Factors; D012737:Sex Factors