This is a list of countries by life expectancy
at birth, the average number of years to be lived by a group of people
born in the same year, if mortality at each age remains constant in the
future. The entry includes total population as well as the male and
female components. Several non-sovereign entities are also included in
this list. Figures are from the 2008 CIA World Factbook and from the 2006 revision of the United Nations World Population Prospects report, for the period 2005-2010 . Only countries/territories with a population of 100,000 or more in 2007 are included in the United Nations list.
The life expectancy (both sexes, at birth) of the world is 65.82 years (63.89 years for males and 67.84 years for females) for 2007
according to CIA World Factbook 2008 and 67.2 years (65.0 years for
males and 69.5 years for females) for 2005-2010 according to United
Nations World Population Prospects 2006. Life expectancy ranges from
83.52 years in Andorra to 32.23 years in Swaziland. Many of the countries with the lowest life expectancies, namely Swaziland, Botswana, Lesotho, Zimbabwe, South Africa, Namibia, Zambia, Malawi, Central African Republic, Mozambique and Guinea-Bissau, are suffering from very high rates of HIV/AIDS infection, with adult prevalence rates ranging from 10 to 38.8 percent . Also note that in countries with high infant mortality
rates, the life expectancy at birth will be lower and may not reflect
the life expectancy a person who has survived his/her first year of
life would have.
UN World Population Prospects - The 2006 Revision: 2005-2010 Life Expectancy at birth (years).
| over 80 77.5-80.0 75.0-77.5 72.5-75.0 70.0-72.5 67.5-70.0 65.0-67.5
|| 60-65 55-60 50-55 45-50 under 45 not available
 List by the United Nations (average for the 2005-2010 period)