How can we support people age safely and with dignity in their own homes?

Dr. Susy Stark, is a Professor at the Washington University in St Louis School of Public Health. As an occupational therapist and community-based researcher, her work focuses on helping adults with chronic conditions and functional decline age successfully in place by using tailored environmental support and self-management strategies to prevent falls.

In this episode, Dr. Stark joins Salma to speak about the overlooked role of the home environment in shaping health outcomes for older adults. Drawing on decades of clinical experience and research, Susy explains why falls are not inevitable consequences of aging, but largely preventable events shaped by the interaction between bodies, environments, and behavior. The conversation unpacks the demographic shift from an aging “pyramid” to an aging “column,” the misalignment between how homes are built and how people age, and why nearly half of all falls occur inside the home.

At the center of the discussion is the Home Hazard Removal Program (HARP), an evidence-based intervention that pairs individualized home assessments with shared decision-making and hands-on implementation. Susy describes how modest environmental changes like improved lighting, handrails, and non-slip surfaces, can reduce fall rates by 38% while generating a positive return on investment for the health system.

Beyond intervention design, the episode explores why community-based care remains underfunded in the U.S., what it takes to translate evidence into policy, and why aging should be understood not as a niche issue, but as a collective future we are all moving toward and must all help address comprehensively.

A conversation about prevention, autonomy, and why supporting older adults is not just compassionate, it is essential for the sustainability of our health systems.

Useful resources:

1. Stark S, Keglovits M, Somerville E, et al. Home Hazard Removal to Reduce Falls Among Community-Dwelling Older Adults: A Randomized Clinical Trial. JAMA Netw Open. 2021;4(8):e2122044. doi:10.1001/jamanetworkopen.2021.22044

Host: Dr. Salma Abdalla Editors: Catalina Melendez Contreras Marketing: Kinkini Bhaduri Music: Eden Avery / Melting Glass from Epidemic Sound https://www.epidemicsound.com/track/2fqOXWpHab/

The views and opinions expressed by the guest in this episode do not necessarily reflect those of their institution, the funders, or the podcast team.

How does research actually shape policy and when is evidence "good enough" to act on?

In this episode, Salma Abdalla is joined by Dr Kathryn Backholer, Professor of Public Health Policy and co-director of the Global Centre for Preventive Health and Nutrition (GLOBE) at Deakin University in Australia. Kathryn’s work focuses on building evidence that decision-makers can use, starting with policy problems that need solving and working backward to generate the right kind of data.

The conversation explores what it takes for research to move from journals into real policy action. Drawing on Kathryn’s work monitoring how gambling, alcohol, and junk food companies target young people online, they examine the tension between rigor and timeliness, the role of well-timed pilot studies, and why waiting for “perfect” evidence can sometimes mean missing critical policy windows.

The episode is anchored in a live policy moment: Australia’s recent decision to delay social media access for people under 16. Kathryn discusses how evidence informed this world-first policy, what it can — and cannot — address, and how her team is now evaluating its effectiveness and unintended consequences.

This episode is a candid look at the research-to-policy pipeline, the trade-offs involved in population-level decision-making, and what public health researchers can learn about designing work that is both rigorous and consequential.

Useful resources:

• Livingstone H. Australia has banned social media for kids under 16. How does it work? BBC News. January 22, 2026. https://www.bbc.com/news/articles/cwyp9d3ddqyo
• Backholer K, Pathirana NL. #DigitalYouth. Deakin University; 2024. https://iht.deakin.edu.au/wp-content/uploads/sites/153/2024/06/Digital-Youth-brief-Final-2.pdf

Host: Dr. Salma Abdalla Editors: Catalina Melendez Contreras Marketing: Kinkini Bhaduri Music: Eden Avery / Melting Glass from Epidemic Sound https://www.epidemicsound.com/track/2fqOXWpHab/

The views and opinions expressed by the guest in this episode do not necessarily reflect those of their institution, the funders, or the podcast team.

Does public health belong to people with a specific perspective, or is it—as the term implies—for the public at large?

Today’s episode is different. Dean Sandro Galea, Dean and Distinguished Professor at WashU School of Public Health, returns to the podcast to discuss the Purple Public Health Project (PPHP), a new initiative he is launching with Salma. The PPHP aims to start a conversation about how public health thinks, acts, and communicates so we can reach people of all stripes, ideologies, and perspectives. Using concrete examples, they discuss whether public health should be grounded in science or values, or both. They also explore what each one of them thinks success would look like.

Join Salma and Dean Galea as they commit to this process of thinking rigorously in public about public health and contribute to shifting the thinking of the field.

Useful resources:

• Abdalla S, Galea S. Introducing the Purple Public Health Project. Complicating the Narrative. January 24, 2026. https://salmaabdalla.substack.com/p/introducing-the-purple-public-health
• Healthier Futures Lab. www.healthierfutureslab.org

Host: Dr. Salma Abdalla Editors: Catalina Melendez Contreras Marketing: Kinkini Bhaduri Music: Eden Avery / Melting Glass from Epidemic Sound https://www.epidemicsound.com/track/2fqOXWpHab/

The views and opinions expressed by the guest in this episode do not necessarily reflect those of their institution, the funders, or the podcast team.