According to the assessment in 2010, the balance of the
global burden of disease is gradually tilted to chronic diseases
which will be the first burden of the global elderly.The most
common chronic illnesses include cardiovascular disease,
heart disease, cancer, chronic respiratory diseases, musculoskeletal
disorders, pulmonary disease, diabetes, cognitive
impairment, and depression, among which cardiovascular
disease is a major killer of elderly health, especially ischemic