Most of the men in the trials had either low sperm counts or sperm that were poor swimmers.
Research from eight European countries has identified exceptionally low sperm counts in men in their early 20s.
Men with low sperm counts have increased them significantly by taking combinations of zinc and folic acid, a new study conducted in the Netherlands has found.
Scientists suspect excessive heat may explain low sperm counts in men who use wheelchairs, those with sedentary jobs, and regular drivers, such as cabbies and long distance truckers.
A study in 2001 in the journal Fertility and Sterility found low levels of folic acid in men were linked with low sperm counts and less active sperm.
Skinny jeans are a threat to the very existence of the human race, responsible as they are for giving men low sperm counts.
Although these lions do not yet display the symptoms of inbreeding — kinked tails, cowlicked fur, heart problems, and low sperm counts — Riley expects that future generations will.
These include breast cancer, infertility, low sperm counts, genital deformities, early menstruation and even diabetes and obesity.
Within a decade, men with low sperm counts could father genetic offspring by means of ICSI (intracytoplasmic sperm injection), a type of in vitro fertilization in which a sharpened pipette launches sperm into egg.
In 1991, he produced the first evidence showing that human sperm counts had fallen by nearly 50 per cent in less than 50 years – low sperm counts are a major cause of male infertility.
If we followed through by banning all the chemicals we read about that supposedly cause (pick one) cancer, birth defects, low sperm counts, Alzheimer's disease, autism, et cetera, we'd have to ban most of the chemicals in the world - including natural ones.
