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Why does one person develop schizophrenia while another does not? A leading psychiatric geneticist investigates the answer

Dr. Consuelo Walss-Bass shares her groundbreaking research on schizophrenia, emphasizing the importance of considering both genetic predisposition and environmental factors. She also discusses her work with induced pluripotent stem cells to develop personalized psychiatry and reduce stigma around mental health.

SourceGenomic Press·JournalGenomic Psychiatry·TypeNews article·DateMar 25, 2025

When did human language emerge?

A new genomic analysis suggests that human language capacity emerged at least 135,000 years ago, with regional groups spreading across the globe around 100,000 years after that. The study, which examined 15 genetic studies, provides increasingly converging evidence about the timing of geographic splits among early human populations.

SourceMassachusetts Institute of Technology·JournalFrontiers in Psychology·DateMar 18, 2025

Stowers scientists uncover principles underlying the toxicity of “selfish” genes

Researchers found that selfish genes use self-assembly properties to harm cells, with aggregate size and distribution being key factors in toxicity. The study also reveals an evolutionary arms race between sabotage and salvation, where rapid evolution of 'selfish' genes can lead to their own destruction.

SourceStowers Institute for Medical Research·JournalPLOS Genetics·TypeExperimental study·DateMar 18, 2025

Do starchy carbs cause cavities?

A new study published in Microorganisms explores the impact of starch on oral health and finds that high AMY1 copy numbers alter the oral microbiome, increasing disease risk. The researchers discovered that populations with a history of agriculture and starch consumption have more copies of the gene, which provides a survival advantage.

SourceCornell University·JournalMicroorganisms·DateFeb 26, 2025

New study reveals Neanderthals experienced population crash 110,000 years ago

A new study found that Neanderthals experienced a drastic loss of genetic variation approximately 110,000 years ago, leading to their eventual extinction. The research measured the morphological diversity in semicircular canals, which revealed lower diversity in classic Neanderthals compared to pre-Neanderthals and early Neanderthals.

SourceBinghamton University·JournalNature Communications·TypeComputational simulation/modeling·DateFeb 25, 2025

Lifestyle and environmental factors affect health and ageing more than our genes

A new study published in Nature Medicine reveals that lifestyle and environmental factors, such as smoking and physical activity, have a profound impact on health and premature death. The research suggests that targeting socioeconomic conditions, reducing smoking, and promoting physical activity can mitigate the risks of chronic diseases.

SourceUniversity of Oxford·JournalNature Medicine·TypeData/statistical analysis·DateFeb 19, 2025

Gene variant could protect against ultra-rare seizure disorder, fruit fly research finds

Researchers at the University of Utah Health have identified a gene variant called CNTN2 that may protect against PIGA-CDG, an ultra-rare genetic disease causing seizures and developmental delays. This finding could lead to better therapies for PIGA-CDG by targeting multiple genes involved in symptom severity.

SourceUniversity of Utah Health·JournalAmerican Journal of Human Genetics·TypeExperimental study·DateFeb 12, 2025

Deep dive into genome of dogs within Chornobyl Exclusion Zone shows genetic differences are not due to mutations

A new study published in PLOS ONE found that the genomes of dogs within the Chornobyl Exclusion Zone did not exhibit genetic mutations from radiation exposure. Instead, researchers suggest that low-level environmental toxin exposure over many years may have contributed to genetic differences between dog populations. The findings offer ...

It’s all about expression

Researchers found that human cells have higher gene expression rates compared to chimpanzees, with 5-10% of genes showing significant differences. Human glial cells, particularly oligodendrocytes, showed the greatest variations in gene expression, suggesting a link to human brain complexity.

SourceUniversity of California - Santa Barbara·JournalProceedings of the National Academy of Sciences·DateJan 2, 2025

Your immune cells are what they eat

Researchers at Salk Institute establish a novel framework for the relationship between nutrition and cell identity. They found that a nutritional switch from acetate to citrate plays a key role in determining T cell fates, shifting them from active effector cells to exhausted cells.

SourceSalk Institute·JournalScience·DateDec 12, 2024

Genomic analysis refines timing of Neandertal admixture – and its impact on modern humans

A genomic study spanning over 300 genomes reveals that modern humans acquired several Neanderthal genes advantageous for our lineage, including those in skin pigmentation, immune response, and metabolism. The study also found rapid natural selection of Neanderthal ancestry within 100 generations after gene flow.

Viking colonizers of Iceland and nearby Faroe Islands had very different origins, study finds

A recent study found that Viking colonizers of the Faroe Islands and Iceland came from different Scandinavian populations. The researchers analyzed genetic samples from 139 men and compared them to samples from Norway, Sweden, Denmark, Iceland, and Ireland, revealing a 'founder effect' that persists in today's male populations.

SourceFrontiers·JournalFrontiers in Genetics·TypeExperimental study·DateNov 25, 2024

Why do we love carbs? The origins predate agriculture and maybe even our split from Neanderthals

A new study finds that the gene for starch-digesting saliva may have first duplicated more than 800,000 years ago, seeding genetic variation that shapes modern diet. This early duplication set the stage for significant variation in the amylase region, allowing humans to adapt to shifting diets with increasing starch consumption.

SourceUniversity at Buffalo·JournalScience·TypeObservational study·DateOct 17, 2024

Researchers offer alternative to hydroxyurea in study of DNA replication process

Researchers at Colorado State University have identified an alternate method to study changes during the DNA replication process in lab settings using genetically modified yeast. This new approach provides a less toxic and quickly reversible alternative to hydroxyurea, allowing for better insight into cell cycle arrest mechanisms.

SourceColorado State University·JournalProceedings of the National Academy of Sciences·DateOct 16, 2024

How bread dough gave rise to civilization

A study by the Open Wild Wheat Consortium explains how Aegilops tauschii, a wild grass, contributed to the genetic diversity of bread wheat, enabling its rapid spread across different climates. This hybridization event allowed humans to settle down and form societies.

SourceJohn Innes Centre·JournalNature·DateAug 14, 2024

Genes or environment? A new model for understanding disease risk factors

A new model developed by Penn State researchers more accurately predicts the causal relationship between genetic and environmental factors in disease development. The study found that lifestyle and environmental factors play a larger role than previously believed, offering new opportunities to mitigate disease risk.

SourcePenn State·JournalNature Communications·TypeData/statistical analysis·DateJul 30, 2024

Living in disadvantaged neighborhoods influences stress-related genes, which may contribute to aggressive prostate cancer in African American men

A study found that living in disadvantaged neighborhoods is associated with higher stress-related gene activity, which could contribute to aggressive prostate cancer in African American men. The research also linked five genes related to inflammation to an increased risk of prostate cancer.

SourceUniversity of Maryland School of Medicine·JournalJAMA Network Open·TypeObservational study·DateJul 12, 2024

BTK inhibitor-related cardiotoxicity: the quest for predictive biomarkers and improved risk stratification

Researchers discuss Ibrutinib, a BTK inhibitor approved for chronic lymphocytic leukemia treatment, noting 20-25% of patients experience dose-limiting cardiovascular toxicities. A recent study identifies genetic biomarkers, such as KCNQ1 and GATA4, associated with cardiotoxic events, which may improve risk stratification.

SourceImpact Journals LLC·JournalOncotarget·TypeCommentary/editorial·DateJun 4, 2024

Finnish Vole fever spreading further south

A new study has discovered that bank voles in southern Sweden carry a virus that can cause hemorrhagic fever in humans, spreading the disease further south than previously known. The virus strain is closely related to strains from Finland and Karelia.

SourceUppsala University·JournalEmerging Infectious Diseases·TypeObservational study·DateMay 28, 2024

Cultural and linguistic networks of Central African hunter-gatherers have ancient origin

A study led by Andrea Migliano from the University of Zurich has discovered previously unknown links between culture, language, and genes among different hunter-gatherer populations in Central Africa. The team found that musical instruments were exchanged long before agricultural populations arrived in the region, suggesting extensive ...

SourceUniversity of Zurich·JournalNature Human Behaviour·TypeExperimental study·DateMay 27, 2024