Sperm News and Research

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The term sperm refers to the male reproductive cells. In the types of sexual reproduction known as anisogamy and oogamy, there is a marked difference in the size of the gametes with the smaller one being termed the "male" or sperm cell. The human sperm cell is haploid, so that its 23 chromosomes can join the 23 chromosomes of the female egg to form a diploid cell.

Men who regularly lift heavy objects at work have higher sperm counts, study suggests

A new study from researchers from Brigham and Women's Hospital, a founding member of the Mass General Brigham healthcare system, suggests that men who regularly lift heavy objects at work have higher sperm counts.

22 Feb 2023

Step-by-step process of rewiring cells to generate germ cell precursors

Different cell types - say, heart, liver, blood, and sperm cells - possess characteristics that help them carry out their unique jobs in the body.

21 Feb 2023

Exploring geographical variations in sperm quality in the continental US

A study published in The World Journal of Men’s Health provides an up-to-date report on the geographical differences in sperm parameters among a group of men residing in six regions of continental US.

21 Feb 2023

An oral and on-demand male contraceptive

Researchers identify a soluble adenylyl cyclase (sAC) inhibitor that has the potential to be used as an on-demand oral contraceptive for men.

16 Feb 2023

Nut consumption and its impact on human and environmental health

Researchers examine the impacts of nut consumption on human health and the environment.

16 Feb 2023

Study could lead to a safe, on-demand and reversible oral contraceptive for men

In a mouse study, researchers funded by the National Institutes of Health have identified a potential non-hormonal contraceptive that men could take shortly before sexual activity and have fertility restored the next day.

14 Feb 2023

The impact of viral infections on the human endocrine system

Researchers briefly outlined how viral infections trigger endocrinopathies in humans.

3 Feb 2023

New candidate molecule could become an effective non-hormonal male contraceptive

Despite birth control existing for decades, almost none of the options specifically target sperm cells. Researchers are now developing approaches that target testosterone or otherwise interrupt the sperm's ability to fertilize an egg, yet these may not work for everyone.

30 Jan 2023

Novel class of sulfonamides to block malaria transmission

Malaria is a devastating disease, with 247 million cases and 619,000 deaths reported in 2021 alone. Malaria causes fever and a flu-like illness that occurs when people are infected with the parasite Plasmodium falciparum, which is spread by mosquitoes.

30 Jan 2023

Study: FER1L5 protein essential for sperm to undergo acrosome reaction and male fertility

Fertilization is the union of two cells: an egg and a sperm. Before the egg and the sperm fuse, an event known as the "acrosome reaction" needs to occur in the sperm.

25 Jan 2023

Study reveals why older male fruit flies are more likely to pass mutations onto their offspring

The male reproductive system serves as a hotspot for the emergence of new genes. Perhaps that explains why more new mutations are inherited from fathers than from mothers.

12 Jan 2023

Less than four in 100 men reach the end of the sperm donation process

Less than four in 100 men who apply to be sperm donors reach the end of the process and have samples frozen and released for treatments, according to a new study.

9 Jan 2023

Radiation damage to mature sperm cannot be repaired and is instead passed on to the offspring

Whether radiation exposure of fathers can have consequences on their children is one of the most long-standing questions in radiation biology.

21 Dec 2022

What influence has COVID-19 vaccination had on sperm characteristics?

Researchers assessed the influence of coronavirus disease 2019 (COVID-19) vaccination on sperm characteristics.

15 Dec 2022

Mediterranean diet may be a non-intrusive and affordable strategy to overcome infertility

With an emphasis on fruits, vegetables and legumes, the Mediterranean diet has long been applauded for its multiple health benefits. Now, new research shows that it may also help overcome infertility, making it a non-intrusive and affordable strategy for couples trying to conceive.

13 Dec 2022