Old age has historically been measured by chronological age. However, this metric does not take into account improvements in life expectancy and health, says Futurity. In 1800, a European male had only a 25 percent chance of reaching the age of 60, whereas 90 percent of contemporary European men do.Know More
Old age is perceived differently as people age themselves, says Forbes magazine. As the current generation grows older, they adjust their definition of "old" upward. Women, who have a greater life expectancy than men, are less apt to call a 63-year-old person old. A Marist College poll shows that the age someone considers old rises correspondingly with the age of the survey participant.
The definition of old age is important because of the increasing number of people in developed countries who may or should be eligible for retirement benefits. By 2050, 22 percent of the world's population will be over 60, and the number of people 80 years and older will quadruple according to the World Health Organization.
Low and middle-income nations, such as Brazil and China, will experience the fastest rate of demographic change. Even in less-developed countries, more people die of lifestyle-related factors, such as heart disease, cancer and diabetes, than from communicable disease. The rate of aging and gradual decline depends on diet, exercise and exposure to health risks, such as tobacco or alcohol, says the World Health Organization.Learn more about Population & Demography
The three most frequently studied demographic variables in the U.S. consumer market are age, gender and income level. Other variables that are frequently considered include education level, consumer occupation, family life cycle, social class, race and ethnicity. Demographic variables are associated with consumer needs and buying patterns.Full Answer >
Population structure is the composition of a given population, which is broken down into categories such as age and gender. Population structure can be used to categorize populations into many subsections and demonstrate population demographics on a local, regional or national scale.Full Answer >
A population pyramid is a diagram of population distribution based on age and sex. The illustrated bar graph shows females on one side and males on the other. Along the vertical line are age groupings, such as 5 to 9 and 10 to 14, and along the horizontal line are population percentages by age.Full Answer >
According to an article published by the New York Post, a woman named Leandra Becerra Lumbreras is unofficially recognized as the oldest living human being in the world, living to the age of 127 as of August 31, 2014. Her claim is supported by being able to recite accounts of events that she took part in 100 years ago, such as being a female soldier in the Mexican Revolution.Full Answer >