It is safe to say that humans have eaten raw meat and fish throughout their evolution, but the practice was either continued or abandoned by different groups depending on the environments in which they lived.
新鮮な獣や鳥の肉・魚を切り取って生のまま食べることは人類の歴史とともに始まったと言ってよいが、人類の住むそれぞれの環境に応じて、生食の習慣は或いは残り、或いは廃れていった。