Health and Medicine (Audio)

Privacy-preserving computation can help hospitals and researchers use sensitive health data without exposing it. Farinaz Koushanfar, Ph.D., UC San Diego, explains how secure computation and distributed learning make it possible to collaborate on medical data while protecting patient privacy. Koushanfar examines secure multi-party computation, zero-knowledge proofs, and federated and split learning, helping clarify how health systems can work together despite data silos, incompatibility, security threats, and re-identification risk. This work helps explain how medical AI can learn from private data more safely and points toward more secure, robust, and trustworthy healthcare systems. Series: "Exploring Ethics" [Health and Medicine] [Humanities] [Science] [Show ID: 41367]

As part of the 2026 Developmental Disabilities Conference, Maria Town, President and CEO, American Association of People with Disabilities, discusses Medicaid. Series: "Developmental Disabilities Update" [Health and Medicine] [Show ID: 41454]

Sexual health is an important part of healthy aging and offers a useful way to understand how well-being can change without disappearing in later life. Annie L. Nguyen, Ph.D., M.P.H., UC San Diego, explains how sexual interest, sexual activity, and sexual satisfaction follow different patterns as people age. Nguyen examines research on health status, relationship context, and gender differences, then shares findings from a UC San Diego SAGE study of adults age 60 and older. Her results show that sexual interest declines across later decades and differs by sex, while sexual satisfaction remains more stable across age groups. This work helps explain why sexual health in later life should not be reduced to a single measure and points toward more open, nonjudgmental conversations about well-being, intimacy, and aging. Series: "Stein Institute for Research on Aging" [Health and Medicine] [Show ID: 41107]

Youth mental health is increasingly shaped by how teens use AI for emotional support outside clinical care. Cinnamon Bloss, Ph.D., UC San Diego, explains how growing use of conversational AI reflects major gaps in care and changing preferences for support. Bloss examines the appeal of AI’s accessibility and nonjudgmental responses, concerns about replacing human connection, and the need to monitor harms, helping clarify how AI fits into a fast-changing mental health landscape. She also points to the importance of listening to young people, improving AI credibility and transparency, expanding safety and privacy discussions in schools, and preparing clinicians and online safety workers for this new reality. This work helps explain why teens are turning to AI and points toward a more thoughtful balance between safety and access to mental health support. Series: "Exploring Ethics" [Health and Medicine] [Science] [Show ID: 41366]

Brain aging and neurological disease are hard to study because living human brain tissue is difficult to access. Alysson Muotri, Ph.D., UC San Diego, explains how brain organoids sent to space can model accelerated aging, reveal changes in neural networks, and help test potential treatments for brain disorders. Muotri examines space-induced senescence, fragmented network activity linked to dementia and Alzheimer’s patterns, and Rett syndrome findings showing inflammation tied to endogenous retroviruses and response to antiretroviral drugs in preclinical models. He also explores using brain organoids in space to screen neuroprotective compounds, including candidates identified from Amazon plants. This work helps explain how space biology can speed research on autism, Rett syndrome, Alzheimer’s disease, and other neurological conditions, and points toward new ways to test therapies on Earth. Series: "Stem Cell Channel" [Health and Medicine] [Science] [Show ID: 41475]