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.
Answer Wiki. According to wikipedia article Old age the ages of 62-79 is considered old age and then advanced age. The body starts to loose efficiency much earlier than that time (less than 40). This may be linked to physical age, but mentally you never need to feel old.