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 ability of human beings to prevent, early detect and diagnose cancer, which effectively prolongs the life time of cancer patients.
 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