In the case of environmental pollution is increasing, human fertility continues to decline, in which vehicle emissions can decrease male fertility.  A new study suggests that prolonged exposure to vehicle emissions will lower sperm quality, thus affecting male fertility. This is an issue of particular concern because it is related to the human living environment of human reproduction, involving the major issues of social development.

University of Naples, Italy, medical researchers, to 85 on the highway toll station conducted a study of working men and found that their sperm count and in the same area there is no difference in other middle-aged men, but the weakened sperm motility and thus their ability to bear children is also a corresponding decline. In this study, the highway toll station staff had received a thorough physical examination, 83% of men married, in which 71 people were married, 7 were married in the not to procreate.

If all the men a day in the car exhaust environments exposed to 6 hours, their male hormone levels in the body does not change, but the sperm mobility but it will decline, thus affecting the fertilization ability. About one-third of female infertility is due to male sperm quantity and quality of abnormal result. Male sperm count, if the sperm per milliliter in less than 20 million sperm, fertility is very poor. Reduced sperm motility, morphological abnormalities can also affect male fertility.

The researchers believe that this part of the male long-term high concentrations of nitric oxide, a sulfur oxides, carbon monoxide and lead vehicle exhaust environment, while the nitric oxide, lead, most likely to damage sperm quality. The researchers called for on this subject should be more in-depth study, at the same time, health workers also should pay attention to environmental pollution and negative effects on human health concern for people's health, concerns the human reproductive capacity.

Dong's Chinese Medicine Research Institute, Shijiazhuang Tel :0311-88468620