Short-term illnesses and frailty are major causes of morbidity in aging adults.

Short-Term Illnesses

Health conditions characterized by a brief duration, typically resolving within three months or less.

Frailty

A state of increased vulnerability due to aging or illness, leading to a higher risk of falls, sudden health declines, and increased dependency.

Morbidity

The condition of being diseased or unhealthy within a population, often used to describe the incidence or prevalence of a disease.