Viruses
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How persistent pathogens could accelerate the aging process | Amy Proal | TEDxBoston
TEDx Talks· 2025-11-21 17:02
Core Argument - The prevailing aging models inadequately address the role of persistent pathogens (viruses, bacteria, parasites) as a significant driver of human aging and healthspan reduction [1] - Persistent pathogens can embed themselves in tissues and nerves, potentially driving various health problems later in life [2][3][4] - These pathogens can actively distort the signaling of human genes, impacting multiple hallmarks of aging [8] Pathogen Prevalence and Impact - Approximately 95% of individuals harbor one or more strains of herpes virus [5] - Around 11% of people in the US and up to 87% in some global regions carry the chronic parasite toxoplasma [6] - Persistent SARS-CoV-2 virus has been found in tissue samples months or years after initial infection [7] - Pathogens can drive mitochondrial dysfunction by hijacking host cell metabolism [10][11][12] - Viruses can integrate into telomeres, leading to shorter and more unstable telomeres [13][14] - Viral proteins can interact with and distort the signaling of human aging pathways [15] Proposed Solutions and Recommendations - The industry needs to seriously consider the impact of persistent pathogens when developing healthspan extending interventions [17] - Curbing the activity of pathogens should precede interventions like gene editing [18] - Integrating existing antiviral and anti-parasite medications into healthspan protocols is recommended [18] - Individuals with herpes simplex virus who regularly took anti-herpes virus medications had a 10 times lower risk of developing dementia [19] - Investment in new diagnostic test platforms to identify persistent pathogens is crucial [20][21] - Incorporating the activity of persistent pathogens into aging models is essential for successfully extending healthspan [22]
The social lives of viruses | Asher Leeks | TEDxNewEngland
TEDx Talks· 2025-10-07 17:01
Core Argument - The traditional view of viruses as solitary particles is incomplete; viruses exist within communities and exhibit social behaviors [2][3] - Understanding viral sociality, including cooperation and cheating, is crucial for predicting and potentially manipulating viral behavior, especially in the context of pandemics [9][32] - Game theory and evolutionary biology provide tools to model and understand viral interactions, offering insights into viral evolution and potential antiviral strategies [18][19] Viral Sociality - Viruses form communities both as particles and within infected cells, engaging in social interactions at the molecular level [11][12] - Viral communities exhibit cooperation, where viruses work together to enhance reproduction, and cheating, where viruses exploit the resources of others without contributing [13][15] - The balance between cooperation and cheating in viral communities is a constant evolutionary tension, influencing viral dynamics and potentially leading to extinction or new forms of viral existence [17][27] Implications for Pandemic Response - Understanding the rules of viral sociality could lead to new antiviral strategies that target viral cooperation, potentially preventing or mitigating future pandemics [31][32] - The tragedy of the commons, where individual cheating undermines the collective good, applies to viral communities and can be exploited for antiviral interventions [23][31] - By manipulating viral social behavior, it may be possible to force viruses to give up their social lives, thereby controlling or eliminating infections [33] Viral Diversity and Evolution - Viruses are incredibly diverse and evolve in complex ways that are not fully understood, posing a significant challenge to pandemic preparedness [5][6] - Studying viral social interactions can provide new evolutionary explanations for puzzling viral phenomena, such as the split genomes observed in approximately 20% of plant viruses [28][29] - Conflict within viral communities can be a creative force, driving the evolution of new viral strategies and forms [30]