Are Japanese people typically lactose intolerant? Understanding the Genetics and Culture
                                
                                
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                                    4 min read                                
                            
                                Genetically, a high prevalence of lactase non-persistence exists among East Asian populations, meaning a significant majority of Japanese people are typically lactose intolerant. This prevalence is rooted in genetics and the country's traditional dietary history, which lacked dairy products until relatively recently.