A1 protein in milk can cause lactose intolerance

The incidence of gastrointestinal discomfort after drinking milk is as high as 90% in China and 10% - 20% in western countries with a long history of milk intake On April 20, a symposium on "redefining lactose intolerance" was held in Beijing Sun Jianqin, a professor from East China Hospital Affiliated to Shanghai Fudan University, brought her latest clinical research results This is a clinical study on the effect of A1 and A2 β - casein on gastrointestinal health According to the latest research results, many people have misunderstandings about lactose intolerance In fact, the reason for their gut reaction once they drink milk may be due to the inflammatory reaction of the gut to the A1 protein contained in ordinary milk The breakthrough clinical research findings were first published in the British Nutrition Journal The results show that A1 protein may be one of the important causes of digestive discomfort rather than lactose to some extent Professor Sun Jianqin stressed the significance of this study at the research conference: "for friends like me who once thought they had lactose intolerance, the findings of this study have a breakthrough significance Milk containing only A2 protein can effectively avoid intestinal inflammation caused by A1 protein In China and other parts of the world, there are many people who have self diagnosis of lactose intolerance For them, this study is of great significance " This is the first study based on the impact of human consumption of milk containing A1 protein and only A2 protein The subjects of this study are those who are intolerant of milk Half of the subjects were clinically diagnosed with lactose digestion problems The study found that A2 milk did not cause gastrointestinal disorders in any of the subjects, including those who had been identified with lactose digestion problems Similarly, compared with A2 milk, those who drank ordinary milk (containing A1 protein) had lower gastrointestinal inflammation, intestinal transit delay, cognitive speed and accuracy, and increased blood indicators of immune response due to inflammation When the subjects drank A2 milk containing only A2 protein, their flatulence, abdominal pain and other inflammation were significantly relieved This observation shows that the health of the digestive system is closely related to brain function Professor Chang Cuiqing, Deputy Secretary General of the Chinese society of nutrition, said the design of the study was scientific and rigorous, and the results of the study were also reliable and trustworthy David Hearn, chairman of the board of directors of A2 milk company, witnessed the release of this major research achievement in China "This research is undoubtedly good news for those who have to give up drinking milk because of the discomfort caused by drinking milk, and we hope that the research results can provide an opportunity for these people to enjoy milk again," he said They now have a great chance to enjoy the nutrition and delicious taste of A2 milk He told Beijing Business Daily: "the most fundamental difference of A2 milk is that A2 milk uses DNA detection technology to select cows that only contain A2 protein, not A1 protein A2 milk is 100% fresh and pure milk, not the product of modern technology processing or genetic engineering " Dr Alex Richardson, a senior researcher from the evidence-based intervention center of Oxford University, said: "this study challenges people's existing understanding of the discomfort caused by drinking milk People have misunderstandings about lactose intolerance in the past, and the research will change the way people eat milk and even the way many people live."