Statistical surveys conducted by the National Family Planning Commission Scientific Research Institute adopted more than 10,000 healthy men's semen, sperm, sperm activity rates in 39 cities including Beijing, Shanghai, and Tianjin in 15 years in 1996, in 1986The statistics of the results showed that the three indicators decreased by 10.3%and 10.4%, respectively; the higher the industrialization areas, the more obvious the reduction.This means that in our country with normal fertility, sperm quality has declined amazing, and it has dropped by ten percentage points in 16 years.
In addition, Danish scholar Skeko Baker studied the quality of human semen from 1939-1990 and found that the average sperm density of the quality of human semen had dropped from 1.33 billion/ml in 1940 to 066 million in 1990.66 billion/Ml.The semen volume of each ejaculation has dropped from 3.40 ml to 2.75 ml.75 ml.American scholar Raf Dalti also discovered the number of sperm in American men, which has decreased by 1/3 in the past half a century.This shows that in the past 50 years, although human civilization has developed rapidly, the ecological environment of nature has been severely damaged, which in turn affects human semen quality.Possession of human survival is threatened.Modern people have only half of their ancestors.At present, more than 20%of the developed countries cannot have children, and there will be more couples that cannot be parents in the future.An American expert believes that 50%of men in the United States will have no fertility in 2000.
What causes male genitals?
It is mainly caused by pollution of chemical products in the environment.At present, 45 kinds of chemical products will affect human reproduction, the most important of which are the pesticides of the pests of crop pests.At present, every eight couples in my country have one infertility, which is 30%higher than 20 years ago.
In addition, hormones not only reduce human genitals, but also make people who are not sound human.If measures are not taken, it will cause humans to break the son -in -law.How to prevent pesticides' harm to humans?
There are actively promoting low -toxic pesticides to replace dangerous pesticides; it is strictly forbidden to sell fruits and vegetables that have just sprayed pesticides to the market; eat fruit skin, vegetables should be washed with water multiple times;Rope; farmers who use pesticides should work strictly in accordance with the operating procedures.
(Editor in charge: Chen Bong)
