who had been sending his wife to the fertility clinic with his mother, was asked by the fertility expert to undergo tests which established that it was he who had a low sperm count
Professor Daniel Brison, a University of Manchester expert, said: "The extent of the decline in sperm counts
in the Western world revealed in this study is shocking.
Prof Allan Pacey of Sheffield University said to the BBC: 'I ve never been particularly convinced by the many studies published so far claiming that human sperm counts
have declined in the recent past.
In our study also, difference in mean FSH levels in patients at 1 year or >5 year follow-up was significant; recovery of normal sperm count
at 5-year follow-up compared patients having <1 year follow-up (p <0.
These substances damages the sperm and causes low sperm count
In more than 90 Percent of cases male infertility is due to either low sperm count
or poor semen quality or combination of the two.
These associations with sperm counts
suggest that lifestyle changes such as increases in physical activity may positively influence sperm count
and concentration in reproductive-age men," the study's authors wrote.
Of those, 4,960 were found to have normal sperm production, and 1,495 had abnormal production, such as low sperm counts
They found that men who watched TV the most -- 20 or more hours a week -- had a sperm count
that was 44 per cent lower than those who watched the least.
These findings are a "serious public health warning," the authors wrote, although they point out the average estimated sperm count
is still well above the level deemed normal by the World Health Organization.
According to Tina Jensen, lead author of the study from Rigshospitalet in Copenhagen, it cannot be said that it has a causal effect, but other studies have shown that saturated fat intake has shown a connection to other problems and now also for sperm count
The results indicated that men who ate more saturated fat in their diet had a 41 percent lower sperm count
than men who ate less saturated fat.