The article in the rumor is a far-reaching online article, which also makes many people doubt drinking milk. Can milk be drunk or not? Here, let's discuss the problem of casein.
How did the rumor come from?
How did Professor T colin campbell of Cornell University mentioned in the gossip article come to the conclusion that casein in milk will promote cancer at all stages?
I have to start with a paper in 1968 India. Through experiments in rats, it is found that the intake of high-protein feed is positively correlated with the incidence of liver cancer [2]. After reading this paper, Professor Campbell and his research team designed a series of similar experiments, and found that the content of protein in feed can change the development speed of liver cancer in rats, and the intake of high protein will accelerate the development of liver cancer in rats.
They also found that the protein used in the experiment was milk casein from animals. If you switch to soybean protein or wheat protein from plants, it will not promote the development of cancer. In the1980s, Professor Campbell participated in a health survey in China. By comparing the daily dietary intake of Chinese and American people with the incidence of some diseases, he concluded that high-protein diets such as meat and dairy products are the root causes of many diseases, and vegetarianism is more conducive to health.
Professor Campbell wrote his own research experience into a book "China Health Survey Report", from which he came to the conclusion that casein in milk will promote all stages of cancer [3]. Because this book caters to the ideas of the American Committee of Responsible Medical Doctors (PCRM), which advocates vegetarianism, and the people for the ethical treatment of animals, which advocates the protection of animal rights, it is widely used by them to publicize against dairy products on a global scale. One of their reasons for opposing dairy products is that milk can cause cancer.