What is life expectancy?
Q: What is life expectancy?
A: Life expectancy is how long a person is expected to live, based on factors such as country and lifestyle.
Q: What are some of the differences in life expectancy between different parts of the world?
A: Differences in life expectancy between different parts of the world are mostly caused by differences in public health, medical care and diet. In poorer nations, excess mortality (higher death rates) can be due to war, not enough food and medical conditions or diseases like AIDS or Malaria.
Q: How has life expectancy changed over the past 200 years for people with black or African populations?
A: Over the past 200 years, people with black or African populations have generally not had the same improvements in mortality rates that have been enjoyed by other peoples. For example, white Americans are expected to live until age 79 while African Americans only until age 75 (as of 2013).
Q: Does climate affect life expectancy?
A: Climate may also have an effect on life expectancy although it may not be a major factor compared to other factors such as public health and medical care.
Q: What country has the longest life expectancy according to the CIA World Factbook?
A: According to the CIA World Factbook, Macau has the world's longest life expectancy of 84.4 years.
Q: Are there significant differences in life expectancies between men and women?
A: Yes, there are significant differences in life expectancies between men and women in most countries; typically women outlive men by around five years.
Q: How does economic circumstance affect one's lifespan? A: Economic circumstances can also affect one's lifespan; for example people living in expensive areas tend to have longer lifespans than those living in poorer areas which may reflect factors such as diet and lifestyle as well access to medical care.
