Lars Forsberg – LOY – why men live shorter lives?
Our research contributes to solving a long-lasting conundrum in medicine; the fact that men live shorter lives than women. Loss of Y chromosome (called LOY) is the most common human mutation. We have established that men affected with LOY display increased risk for all major causes of death, including cardiovascular diseases, Alzheimer’s disease and cancer.
Men in the entire world live on average about 5–6 years shorter lives than women, a sex bias that has been known but poorly understood for centuries. Since LOY is male-specific and is associated with increased risk for disease and death, our research helps elucidate why men live shorter lives.
Our research shows that LOY causes/exacerbates disease processes in other organs by stimulating the formation of fibrosis. This discovery helps explaining how LOY in blood cells can increase the risk for disease manifesting in other organs. This finding may have great clinical significance.

Group members
Publications
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Loss of Y Chromosome and Major Cardiovascular Events in a Prospective Study of Older Men
Part of Journal of the American College of Cardiology, p. 36-45, 2026
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Part of Science Translational Medicine, 2025
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Part of Communications Medicine, 2025
- DOI for Mosaic loss of chromosome Y in blood is associated with male susceptibility for idiopathic pulmonary fibrosis
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Loss of chromosome Y in regulatory T cells
Part of BMC Genomics, 2024
- DOI for Loss of chromosome Y in regulatory T cells
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Hematopoietic loss of Y chromosome leads to cardiac fibrosis and heart failure mortality
Part of Science, p. 292-297, 2022
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Loss of Y and clonal hematopoiesis in blood: two sides of the same coin?
Part of Leukemia, p. 889-891, 2022
- DOI for Loss of Y and clonal hematopoiesis in blood: two sides of the same coin?
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Part of Cellular and Molecular Life Sciences (CMLS), 2022
- DOI for Reply to Guo's commentary on: "Immune cells lacking Y chromosome show dysregulation of autosomal gene expression"
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A polygenic risk score predicts mosaic loss of chromosome Y in circulating blood cells
Part of Cell & Bioscience, 2021
- DOI for A polygenic risk score predicts mosaic loss of chromosome Y in circulating blood cells
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Chromosome Y loss and drivers of clonal hematopoiesis in myelodysplastic syndrome
Part of Haematologica, p. 329-331, 2021
- DOI for Chromosome Y loss and drivers of clonal hematopoiesis in myelodysplastic syndrome
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Immune cells lacking Y chromosome show dysregulation of autosomal gene expression
Part of Cellular and Molecular Life Sciences (CMLS), p. 4019-4033, 2021
- DOI for Immune cells lacking Y chromosome show dysregulation of autosomal gene expression
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Leukocytes with chromosome Y loss have reduced abundance of the cell surface immunoprotein CD99
Part of Scientific Reports, 2021
- DOI for Leukocytes with chromosome Y loss have reduced abundance of the cell surface immunoprotein CD99
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Part of European Journal of Human Genetics, p. 1323-1324, 2021
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Part of European Journal of Human Genetics, p. 349-357, 2020
- DOI for Longitudinal changes in the frequency of mosaic chromosome Y loss in peripheral blood cells of aging men varies profoundly between individuals
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Part of European Journal of Human Genetics, p. 17-19, 2019
- DOI for Back to the drawing board: loss of chromosome Y (LOY) inleukocytes is associated with age-related macular degeneration
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Genetic predisposition to mosaic Y chromosome loss in blood
Part of Nature, p. 652-657, 2019
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Mosaic loss of chromosome Y in leukocytes matters
Part of Nature Genetics, p. 4-7, 2019
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Part of Leukemia, p. 1184-1194, 2019
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Part of Journal of Sleep Research, 2018
- DOI for Self-reported sleep disturbances and prostate cancer morbidity and mortality in Swedish men: A longitudinal study over 40 years
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A MUTYH germline mutation is associated with small intestinal neuroendocrine tumors
Part of Endocrine-Related Cancer, p. 427-443, 2017
- DOI for A MUTYH germline mutation is associated with small intestinal neuroendocrine tumors
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Loss of Chromosome Y in Leukocytes and Major Cardiovascular Events
Part of Circulation, 2017
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Part of Human Genetics, p. 657-663, 2017
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Mosaicism in health and disease — clones picking up speed
Part of Nature reviews genetics, p. 128-142, 2017
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Biobanking multifocal breast carcinomas: sample adequacy with regard to histology and DNA content
Part of Histopathology, p. 411-421, 2016
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Part of Nature Communications, 2016
- DOI for Human serum-derived protein removes the need for coating in defined human pluripotent stem cell culture
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Mosaic Loss of Chromosome Y in Blood Is Associated with Alzheimer Disease
Part of American Journal of Human Genetics, p. 1208-1219, 2016
- DOI for Mosaic Loss of Chromosome Y in Blood Is Associated with Alzheimer Disease
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Part of Human Mutation, p. 1088-1099, 2015
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Part of Leukemia, p. 1600-1602, 2015
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Mutagenesis: smoking is associated with mosaic loss of chromosome Y
Part of Science, p. 81-83, 2015
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Part of Leukemia, p. 2069-2074, 2015
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Part of Genome Research, p. 1521-1535, 2015
- DOI for Signatures of post-zygotic structural genetic aberrations in the cells of histologically normal breast tissue that can predispose to sporadic breast cancer
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Part of Journal of Medical Genetics, p. 599-606, 2015
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Part of Nature Genetics, p. 624-628, 2014
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Part of Journal of Medical Genetics, p. 1-10, 2013
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Part of Postgraduate medical journal, p. 417-426, 2013
- DOI for Non-heritable genetics of human disease: spotlight on post-zygotic genetic variation acquired during lifetime (Reprinted from vol 50, pg 1-10, 2013)
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Part of PLOS ONE, 2013
- DOI for Post-Zygotic and Inter-Individual Structural Genetic Variation in a Presumptive Enhancer Element of the Locus between the IL10Rβ and IFNAR1 Genes
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Age-related somatic structural changes in the nuclear genome of human blood cells
Part of American Journal of Human Genetics, p. 217-228, 2012
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Part of American Journal of Medical Genetics. Part A, p. 2595-2598, 2010
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Sperm competition between alternative reproductive tactics of the Atlantic salmon in vitro
Part of Aquaculture, p. 265-269, 2010
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Part of Journal of Evolutionary Biology, p. 1859-1869, 2007