Stress is bad for your health, not your sperm, reveals new study

Stress might mess with your love life, but here’s a twist: It turns out that stress may act as a catalyst for sperm, as it improves their ability to move after the stress. So, the next time you experience stress, don’t fret. Think positive and just consider it as a fertility booster.

The outcome of a recent study from the University of Colorado Anschutz Medical Campus has revealed that stress may help enhance results of fetal growth and development

Sperm quality and fertility have decreased during the past 50 years, probably as a result of increased environmental stress. However, the full impact of these modifications on sperm remains unknown to experts.

The study is contradictory to the research done by researchers from Columbia University's Mailman School of Public Health and Rutgers School of Public Health, published in the journal Fertility and Sterility.

The study found out that psychological stress is detrimental to sperm quality, decreasing its concentration, appearance, and especially capacity to fertilize an egg.

The research by the University of Colorado Anschutz Medical Campus, which was published in Nature Communications, shows that stress affects sperm motility — that is, the capacity of sperm to pass through the female reproductive system and fertilize an egg.

During the study, researchers found out that after the stress ended, changes were seen in tiny particles known as extracellular vesicles (EVs), which support sperm production.

These modifications occurred after the stressor had passed rather than during the stress experience, according to the researchers.

The study's lead author, Tracy Bale, said, "Our research shows that sperm motility significantly improves after stress, which might help boost birth rates after stressful periods, like during the Covid pandemic."

Studies involving both humans and animals observed this impact, pointing to a wider interspecies relationship.

According to Dr. Nickole Moon, the study's first author, the process can be compared to a car that runs more effectively with a little extra fuel.

She pointed out that the modifications brought on by stress aid sperm in producing more energy and moving more freely.

"Imagine you have a car that's struggling to get up a steep hill. When the engine is stressed, the car becomes less efficient. However, with a little more gas, you can boost the overall performance for a smoother drive,” said Dr Moon.

“Just as your car becomes more efficient under stress, with the right adjustments, cells improve their energy production and movement when stress-induced factors are present," she added.

Although the study concentrated solely on men, scientists are still investigating the effects of stress on partners and the development of the fetus, especially the brain.

Co-author Dr. Neill Epperson emphasized that improving reproductive health requires an understanding of how stress impacts fertility and is passed down through the generations.

The research team is planning additional experiments to expand their understanding of these systems as they continue to investigate how stress affects sperm and fertilization.