Sperm

Polystyrene Nanoplastics Threaten Reproductive Health and Offspring Development

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Polystyrene nanoplastics can enter living organisms, circulate through biological systems, and potentially reach reproductive tissues, according to a review published in the journal New Contaminants. Researchers at the University of South China screened 285 publications and analyzed 114 peer-reviewed studies to examine how these microscopic particles impact male and female reproductive health, as well as … Read more

Uncovering Male Infertility: Lifestyle Factors Exacerbate Genetic Causes

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Lifestyle factors like an unhealthy diet can worsen the effects of genetic causes of male infertility, according to a proof-of-concept study published in Human Reproduction. Led by Dr Jessica Dunleavy and Professor Moira O’Bryan from the University of Melbourne’s School of BioSciences, the research used a mouse model carrying defects in the M1AP gene to … Read more

How Paternal Sperm Epigenetics Influences Early Pregnancy Loss

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Texas A&M University researchers are investigating the paternal role in early pregnancy loss, shifting focus to sperm epigenetics and male fertility factors that affect over 50% of human conceptions and roughly half of cattle pregnancies. According to Lacey Luense, Ph.D., an assistant professor in the Texas A&M College of Agriculture and Life Sciences Department of … Read more

Satellite DNA: The Genetic Barcode for Chromosome Matching

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According to researchers at ETH, repetitive DNA sequences previously dismissed as useless “junk DNA” actually function as a biological barcode system that helps chromosomes find each other during cell division. Lead author Lena Skrutl and Professor Madhav Jagannathan published these findings in the journal Nature Communications, demonstrating that unique satellite DNA patterns on matching chromosome … Read more

Cooperative Sperm Boosts Arthropod Fertilization Success

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Recent research reveals that arthropod fertilization often relies on sperm cooperation rather than individual competition, reshaping evolutionary biology understandings of reproduction. According to a study published in Nature Communications by evolutionary biologists from Syracuse University, the University of Siena, and the University of Szeged, sperm cells in numerous species form coordinated groups using sperm-associated material … Read more

Why Fruit Fly Sperm Is 40 Times Longer Than Human Sperm

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Fruit fly sperm—which can grow nearly 40 times longer than human sperm—avoid becoming a tangled, unusable mess by organizing into a coordinated, counter-flowing mass. According to a study published in Nature Physics, these insects utilize collective “active matter” behavior, where neighboring cells move in opposite directions to maintain order within the storage organ. This biological … Read more

How Geography Affects Sperm Quality: New Study Reveals Key Differences

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Men in northern Spain have nearly double the total motile sperm count of those in central Spain, according to a multicentre study presented at the 42nd Annual Meeting of the European Society of Human Reproduction and Embryology (ESHRE). The research suggests environmental pollutants, rather than lifestyle habits, drive these regional disparities in male fertility. Why … Read more

New Fertility Options for Childhood Cancer Survivors

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Researchers at Karolinska Institutet have successfully generated early germ cells from cryopreserved testicular tissue taken from prepubertal boys who underwent cancer treatment. Published in Human Reproduction Open, the study provides a proof-of-concept that somatic cells from damaged tissue can be reprogrammed into induced pluripotent stem cells (iPSCs) and subsequently directed to become primordial germ cells, … Read more

DNA Test Reveals Three Women Are Secret Half-Sisters

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Three British women—Natasha, Gemma, and Helen—discovered they were biological half-sisters after independent DNA testing revealed a shared sperm donor from Wales. Born before the UK’s 1991 regulatory overhaul, the women represent an era of donor conception characterized by a lack of clinical record-keeping. Their discovery, facilitated by modern genetic matching platforms, highlights a growing movement … Read more

How Fathers’ Health Impacts Children’s Obesity Risk

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Beyond the “Dad Bod”: Why Your Health Before Conception Matters More Than You Think For decades, the conversation surrounding childhood obesity has been almost exclusively focused on maternal health. We’ve scrutinized prenatal nutrition and maternal lifestyle habits, often leaving fathers on the sidelines. However, a groundbreaking review from the University of California, Irvine, is shifting … Read more

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