1. Health characteristics

Along with increasing age, diseases such as hypertension, diabetes mellitus, dyslipidemia, degenerative osteoarthritis, and chronic reduced cerebral perfusion are quite common. About three-quarters of all 80-year-olds have at least one chronic illness, with an average of six comorbidities.

In terms of nervous system aging, a decrease in smell, sight, hearing and taste is often observed. Some cases of urination disorders and sometimes temporary combined with bowel disorders.

There may be a decline in neurotransmitters that affect nerve function in general, cognitive function in particular, and as a result of brain aging. However, depletion of dopamine to a certain extent can cause Parkinson's disease and apolipoprotein E4 deficiency could be an important cause of Alzheimer's disease. In particular, the combination of many risk factors for blood vessels that can cause stroke with two common clinical forms are cerebral infarction and cerebral bleeding.

Habit of using alcohol, pipe tobacco, etc., or keeping a vegetarian diet, abstaining from a diet ... also has a certain influence on the status of a number of individuals.

In addition, activities in daily life such as exercise, physical or mental labor, entertainment, rest, sleep are all factors related to personal health.anger, explosion, it can be said that individual responses depend a lot on the stimuli (stress) that the elderly themselves have experienced.