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.

Small antibody fragment shows potential for non-hormonal contraception

A new study from Karolinska Institutet shows how a small antibody fragment can block fertilization by targeting a key protein on the surface of the egg.

15 Apr 2025

Your season of conception could shape your body’s calorie-burning ability

Being conceived in colder months may enhance your body’s ability to burn calories throughout life. A new study shows cold-season conception is linked to more active brown fat and greater energy expenditure in adulthood.

8 Apr 2025

Study reveals the genetic arms race between X and Y sperm

In evolutionary terms, fitness is defined as an organism's ability to survive and reproduce its genes into the next generation.

4 Apr 2025

Exploring the relationship between testosterone and men's health

The review article titled"Testosterone and men's health: An in-depth exploration of their relationship", was published on February 18, 2025 in UroPrecision.

2 Apr 2025

Study finds 24-hour fasting cycles enhance libido in male mice

Long-term fasting in 24-hour cycles increases the sex drive of male mice by lowering the concentration of the neurotransmitter serotonin in the brain.

28 Mar 2025

Sperm viability boosted in IVF with glycan technology

The success of in vitro fertilization depends on many factors, one of which is sperm viability. A recent study from the University of Illinois Urbana-Champaign documents a new way to select viable sperm and prolong their viability in the laboratory, reducing one source of variability during the process.

24 Mar 2025

Cellular models of embryos offer insights into early developmental processes

The earliest days after fertilization, once a sperm cell meets an egg, are shrouded in scientific mystery.

20 Mar 2025

Low semen quality linked to shorter lifespan

Researchers determine how low semen quality may impact mortality risk.

10 Mar 2025

How tobacco and cannabis affect male fertility and genetic integrity

A study reveals cannabis and tobacco use harm sperm quality and DNA integrity, with cannabis causing greater damage, raising concerns for reproductive health.

6 Mar 2025

Semen quality linked to longevity in men

Men's semen quality is associated with how long they live according to a study of nearly 80,000 men, which is published today (Wednesday) in Human Reproduction, one of the world's leading reproductive medicine journals.

4 Mar 2025

Researchers uncover key biological mechanism that prevents sperm-egg fusion

A Yale-led research team has uncovered how a naturally occurring biological mechanism found in mammals is able to prevent sperm cells from interacting with an egg, preventing fertilization.

3 Mar 2025

Study unveils protein complex critical for sperm morphology

The human body is full of checks and balances that ensure correct growth, development, and function of all our different systems. Now, researchers from Japan have reported a newly discovered protein interaction that regulates sperm development.

3 Mar 2025

Groundbreaking studies reveal how DNA folding guides sperm cell development

Two new landmark studies show how a seeming tangle of DNA is actually organized into a structure that coordinates thousands of genes to form a sperm cell.

3 Mar 2025

Lack of regulation in sperm donation sparks concerns in Africa

Poor regulation and lack of transparency in Africa's fertility industry leave sperm donors and recipients vulnerable to exploitation and unethical practices, including relatives unwittingly having children together, fertility experts warn.

14 Feb 2025

Researchers achieve a promising breakthrough in bee insemination

Researchers from the University of Liège, as part of the FreezeBEE project, have achieved a promising breakthrough in bee insemination.

7 Feb 2025

Most insurance covers IUDs. Hers cost more than $14,000.

During her annual OB-GYN visit, Callie Anderson asked about getting off the birth control pill.

31 Jan 2025

Crick researchers identify key Y chromosome genes influencing sperm development

Researchers at the Crick have uncovered which genes on the Y chromosome regulate the development of sperm and impact fertility in male mice.

23 Jan 2025

Study unveils role of TLE6 in male sperm development

Infertility is a major global challenge associated with physiological and psychological impact. Genetic mutations that affect early embryonic development, oocyte (egg cell) maturation, and fertilization have recently been studied as causes of infertility.

16 Jan 2025

Could mulberry extract be the key to fighting obesity-induced reproductive dysfunction?

Research indicates mulberry extract's efficacy in addressing obesity-related male infertility, enhancing reproductive outcomes through bioactive compounds.

16 Jan 2025

Air pollution before conception may increase child BMI

In a study of more than 5,000 mothers and their children, exposure to air pollution during the three months before pregnancy predicted higher child body mass index (BMI) and related obesity risk factors up to two years of age.

15 Jan 2025