As to which of these possible causes it might be, the jury is still out, but a 2012 study by researchers at the Universities of Sheffield and Manchester concluded that smoking, drinking alcohol, recreational drug use and obesity had little or no effect on sperm counts
. Other reports, however, have suggested that eating saturated fats, riding bicycles, watching too much television and wearing tight underpants do adversely affect sperm counts
Andrew Drakeley, clinical director at Liverpool's Hewitt Fertility Centre, said: "The results do give cause for concern, but as always there should be some caution due to the variables that come naturally with testing of sperm counts
The reason was that some of the studies only investigated smaller number of men, or included only men who attended fertility clinics and in any case more likely to have low sperm counts
It suggests that sperm counts
have fallen by more than half in Western countries and the decline is real and not due to confounding factors such as different methods of measuring sperm numbers or population changes.
"Decreasing sperm count
has been of great concern since it was first reported twenty-five years ago," (https://www.eurekalert.org/pub_releases/2017-07/thuo-css072017.php) said Dr.
The effect of cyclophosphamide and procarbazine combination on sperm count
and hormone levels (FSH) was significant.
TEHRAN (FNA)- Human exposure to aluminum may be a significant factor in falling sperm counts
and reduced male fertility, new research suggests.
Zinc deficiency causes your sperm count
Mean +- Standard deviation (SD) were calculated for sperm count
, volume, pus cells, motility and morphology; 95 Percent Confidence interval was calculated for proportions and for means.
"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.
New research shows that watching TV for more than 20 hours a week can reduce the sperm count
to almost half.
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