Economics is a study of man in the ordinary business of life. It enquires how he gets his income and how he uses it. Thus, it is on the one side, the study of wealth and on the other and more important side, a part of the study of man.
In developed countries, an increase in the average age of the gravida has been documented. The mean age of primiparous women in Austria rose from 25 years in 1991 to 28 years in 2008. In Germany in 2006, most gravidas were between the ages of 30 and 34 years whereas in the 1970s, most babies were born to women aged 20â24 years.
60 to 70 is on the young side of being elderly. 70 to 80 is the middle of being elderly. 80 to 90 is definitely elderly. That is if you judge by age. Look in the obituaries and you will see many never reach the age of 60. I know people in their 80's that are in better health than those in their 60's.