Final answer:
Old age disorders in late adulthood are often the result of disease vulnerability. Physical decline, compromised immune system, homeostatic imbalance, and protein abnormalities contribute to the development of diseases like flu, heart disease, cancer, arthritis, Alzheimer's, and Parkinson's.
Step-by-step explanation:
The Baltimore Longitudinal Studies of Aging have shown that several old age disorders are the result of disease vulnerability in late adulthood. In this stage, individuals may experience a decline in physical abilities, such as decreased muscle mass and slower reflexes, as well as a compromised immune system. This makes them more susceptible to diseases like the flu, heart disease, cancer, arthritis, and Alzheimer's disease.
Furthermore, the aging process can lead to a reduction in the efficiency of the body's homeostasis, making the elderly more prone to disease. For example, elderly individuals may have difficulty regulating body temperature, which increases the risk of heat stroke. They may also struggle with fighting off infections and cancer due to a weaker immune system.
Additionally, some old age disorders are caused by specific protein abnormalities, such as the accumulation of beta-amyloid plaques in Alzheimer's disease and the increase of alpha-synuclein in Parkinson's disease.