How Stress is linked to male fertility
By Daily News Health Reporter
Past research has associated stress with a number of
health problems, including heart disease, asthma, obesity and depression. Now,
a new study suggests stress can reduce sperm and semen quality, which could
have implications for male fertility.
According to the American Society for Reproductive
Medicine, in around 40% of infertile couples the male partner is the sole cause
or contributing cause of infertility.
The main cause of male infertility is sperm
abnormalities, including low sperm production or misshapen or immobile sperm.
Medical conditions – such as undescended testicles or ejaculation problems –
can lead to sperm abnormalities, as well as health and lifestyle factors.
Can
Life stress ‘led to lower semen quality’?
Men who experienced two or more stressful life
events in the past year had lower sperm quality than men who did not experience
any stressful life events, according to researchers.
As part of our research study, the men were required
to complete a series of tests that measured levels of stress, including that
from the workplace, stressful life events and overall perceived stress.
They were also required to provide semen samples.
Using standard fertility testing methods, researchers from the University Teaching
Hospital (UTH), analyzed semen concentration, and sperm shape (morphology) and
movement (motility) in each sample.
The researchers found that men who experienced two
or more stressful life events in the past year had a lower percentage of sperm
motility and a lower percentage of sperm of normal morphology, compared with
men who did not experience any stressful life events. They note this finding
remained even after accounting for other factors that may influence semen
quality, such as age, other health problems and history of reproductive health
problems.
Although workplace stress did not directly affect
semen quality in the men, the researchers found that those who experienced job
strains had lower levels of the hormone testosterone in their semen, which
could affect reproductive health.
In addition, they found that regardless of the
levels of stress experienced, men who were unemployed had lower semen quality
than those who were employed.
How
can stress affect semen quality?
Although the researchers are unable to pinpoint
exactly how stress affects the quality of semen, they do present some theories.
They say stress could activate the release of
glucocorticoids – steroid hormones that affect the metabolism of carbohydrates,
fats and proteins – which could reduce testosterone levels and sperm production.
Furthermore, they say stress could trigger oxidative
stress – physiological stress on the body caused by damage from unneutralized
free radicals – which has been associated with semen quality and fertility.
And Dr Teresa Banda, (name changed for confidential)
PhD Public Health, said:
“Stress has long been identified as having an
influence on health. Our research suggests that men’s reproductive health may
also be affected by their social environment.”
The researchers noted that this is the first study
to use subjective and objective measures of stress and, as a result, find links
with reduced semen quality.
And Gift Kalunga a Male resident of Mandevu Compound
in Lusaka Zambia shared a story with Daily News Health Reporter that he had difficulties
in producing to have good quality of semen,
“If I had not gone to the man’s clinic I would have
low semen today, the doctors helped me with information on how to have good quality
semen which required me to share with other men,” Kalunga said.
He further urged fellow men to visit any clinic nearby
for more advance.