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Early anatomically modern human evolved in Africa, possibly east Africa, at least 200,000 years ago. However, recent finds suggest this might be older. Population bottlenecks, or a reduction in population size, resulted in a relatively less genetically diverse population that would eventually influence all human populations today. Migration out of Africa ensured that the genetic makeup began to be less diverse as humans migrated to other regions and continents.

Genetic variation among modern humans is relatively limited to most species found on Earth. Populations within Africa were often isolated, developing more diverse genetic variation over time. Once populations left Africa, that diversity began to diminish. Despite physical traits that show variety among humans today in wide regions, the fact is most of those populations show very similar genetic makeup with some input from much older hominid populations and some early modern humans who migrated before the great migration that occurred between 80-50 thousand years ago. In effect, since about 80,000 years ago, humans became far more mobile, whereas migration was very limited perhaps for more than 100,000 years in the evolution of <i>Homo sapiens</i>. The next great divergence between migratory human populations occurred at about 40,000 years ago, where part of the populations migrated towards Europe and the other part into east Asia and eventually North and South America.

{{Mediawiki:Food History}}

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