According to the World Health Organization and the United Nations Environment Programme, more than one million people are poisoned by herbicides every year in the world, 100000 of them die. The situation is more serious in developing countries. In China, there are nearly one million cases of herbicide poisoning and more than 20000 deaths every year. On September 24, 1995, Central Television reported that 540 students in a school in Binyang County, Guangxi Province were poisoned by pesticides because they ate cabbage sprayed with highly toxic herbicides. This century is even more serious. Such events happen every year.

Chronic harm

Chemical herbicides are accumulating in human body. Although they will not cause acute poisoning symptoms in a short period of time, they can cause chronic hazards, such as: destroying the normal function of nervous system, interfering with the balance of hormones in human body, affecting male fertility and immune deficiency. Pesticide chronic harm reduces human immunity, thus affects human health, causes the morbidity and mortality of other diseases to rise.

Herbicide weeds make the crops lose most of the sun and nutrients, the damage to agricultural crops is no less than pests. [3]

Carcinogenic, teratogenic, mutagenic

According to animal experiments, the international agency for research on cancer confirmed that herbicides widely used have obvious carcinogenicity. It is estimated that the number of cancer patients related to chemical herbicides in the United States accounts for about 20% of the total number of cancer patients in the country