Turns out human sperm count has halved since 1973 and the rate of decline seems to be increasing.
A study published in the Human Reproduction Update journal announced the results, and while previous studies concentrated on European, North American and Australian data, the latest studies took a more world-wide approach with 53 countries studied and found the same findings.
And no one is quite sure why. There are proposals that it has been influenced by environmental concerns and health and diet, but it’s still under research.
Scientists are concerned in 50 years there may not be enough young people to support the economy.
The world’s population tipped over eight billion this week, should we really be concerned there might not be enough people in the world?