According to medical records, the incidence of cancer in the second half of the 20th century is nearly 10 times higher than that in the first half of the 20th century, becoming the first killer threatening human life
High technology has greatly improved the accuracy of medical diagnosis and the coverage of this accurate medical diagnosis in the world.
 This shows that the global ecological imbalance caused by the rapid economic development marked by high technology in the second half of the 20th century is an important cause of cancer