Decrease of global human sperm count has doubled since turn of century

Chemical exposure and lifestyle choices probably to blame for reduction resulting in sharp decline in probability of conception'

The rate at which human sperm counts are decreasing has more than doubled since the turn of the century, and the mean level has dropped below a threshold that makes conception significantly more difficult.

These findings are part of a new peer-reviewed study published today in the Human Reproduction Update journal that includes data from 53 countries and is the first meta-analysis to check levels in Central America, South America and Asia.