Paleontological evidence suggests that meat constituted a substantial proportion of the diet of even the earliest humans. The domestication of animals, of which we have evidence dating back to the end of the last glacial period (c. 10,000 years BC) allowed the systematic production of meat and the breeding of animals with a view to improving meat production.
Increased meat-eating has followed rising affluence in many parts of the world. China's levels, for example, doubled between 1990 and 2002, reaching 52 kg (up from only 3.6 kg per person in 1961); half of the world's pork is now consumed in China. But it is the Americans who are the biggest carnivores, eating over 120 kg of meat per person a year
Czechs are above-average meat-eaters consuming around 83 kg per capita a year. The trend has been changing from beef and pork more towards cheaper poultry and fish. Still, Czechs eat less than 10 kg of fish a year, compared to around 17 kg globally, or over 50 kg in Norway, for example.
More details at www.helgilibrary.com/indicators/index/meat-consumption-per-capita