According to a new study, the number of sperm cells in man would have considerably decreased, at least, during the last forty years in the western countries. A decrease the origin of which remains vague.
The quality of the male sperm knows a worrisome reduction. It is the conclusion that reveals a recent study published in the magazine "Human Reproduction Update" by a researchers' international team. More exactly, these works state a considerable reduction in the rate of sperm cells in man in the western countries.
To arrive at this report, the authors of the report were interested in the data of 185 different studies led in this connection between 1973 and 2011. All in all, about 43.000 people living in particular in North America, in New Zealand, in Australia and in Europe were so able to be studied and sorted out according to diverse criteria among which their country of origin and their age.