ilość plemników w spermie

Most of the more recent studies involved men from developing countries and their sperm counts, for unknown reasons, tend to be lower.

Twenty years ago, men might have been chosen because they had particularly high sperm counts.

There is only so much comfort a fellow can take in those high sperm counts.

As it turned out, Seth's sperm count could be done on one hand.

A: Actually, some studies claim that a man's sperm count may be higher in the morning.

Most men go back to the doctor's office to have their sperm count checked.

The study showed that a sperm count of less than three million was enough to guarantee no conception.

Over a 50-year period, human sperm counts had decreased by about half.

In about 10% of men, sperm counts remain very low for over 4.5 years.

How many, he said, think that sperm counts are declining worldwide?