Population Health Exchange
Free Associations
Mad musings from the messy world of science
Author
Population Health Exchange
Category
Podcast website
Latest episode
Oct 30, 2025
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Episodes
Episode 157: Hippocampal Encoding of Memories in Human Infants 30.10.2025 27:45
Jess, Matt, and guest host Marcia discuss a study that sheds light on how babies may form and retain memories. Study link: Hippocampal encoding of memories in human infants
Episode 156: Analgesic Effects of Non-surgical Treatments for Back Pain 30.10.2025 31:26
Jess, Matt, and guest Marcia discuss the efficacy of various methods of treating low back pain. Study link: Analgesic effects of non-surgical and non-interventional treatments for low back pain: a systematic review and meta-analysis of placebo-controlled randomised trials
Episode 155: Probiotics and AI Chatbots 28.04.2025 26:25
Matt and Jess discuss the ethics of probiotics for children and whether AI chatbots can help reduce misinformation. Study link: https://www.nature.com/articles/d41586-024-03971-5
Episode 154: Gun Violence and Maternal Morbidity 11.04.2025 27:21
Matt, Jess and guest host Jon discuss a study of the effect of experiencing gun violence and maternal morbidity. Study link: Fatal Police Violence and Maternal Morbidity Study
Episode 153: Time Waits for No One 27.03.2025 24:54
Matt and Jess and guest host Harold discuss the ways that we experience time (with a slight diversion into our dental traumas) and Matt explains why we can’t have nice things. Study link: Memorability Study
Episode 152: Is Dark Chocolate Good for You? Really? 13.03.2025 30:00
Matt and Jess and guest host Harold discuss whether dark chocolate is really good for preventing type II diabetes, or if the research isn’t there yet, and we discuss the challenges of turning research into practice and how we communicate research to policy makers. Study link: Dark Chocolate Study    
Episode 151: The Role of Advocacy and Activism in Public Health 17.01.2025 27:48
In an expansive, thought-provoking discussion ahead of the pivotal changes in Washington, DC, Matt, Jess and guest host Michael Stein discuss the role of advocacy and activism in public health and the changing views on the role of public health in society. (This discussion was originally part of the December episode, but we felt the […]
Episode 150: Menopausal Hormone Replacement Therapy and the Role of Activism 23.12.2024 57:22
Matt, Jess and guest host Michael Stein discuss a paper that reviews the results of a series of trials that were highly influential in a move away from use of menopausal hormone replacement therapy, but newer analyses suggest the implications maybe be more nuanced than that. Study Link: Women’s Health Initiative Reviews In the second […]
Episode 149 - Outdoor Light Pollution and Alzheimer’s disease 19.11.2024 25:44
In a new format for the “Free Associations” podcast, we split our usual podcast into two bite-sized morsels. In the first segment, Jess, Matt and guest host Salma discuss an article that examines the effect of nighttime ambient light on risk of Alzheimer’s disease.   Journal club article: Alzheimer’s Disease Study     In the […]
Episode 146 - The effects of early cessation of oxytocin 21.05.2024 1:01:21
Matt, Jess, and guest host Salma Abdalla discuss a study of early discontinuation of oxytocin during delivery, they try to predict the future of journals alongside a mass editorial board resignation, and Matt and Salma reveal their love for octopuses. Journal club article: Oxytocin discontinuation study
Episode 145 - Tweets and changes in racial sentiments 23.04.2024 54:13
Matt, Jess, and guest host Allegra Gordon discuss a study using tweets to see if there have been changes in racial sentiment over time, they debate whether in-person or remote work is better for paradigm shifts, and Allegra tells us how birds are smarter than people who don’t want birds nesting on their roofs. Journal […]
Episode 144 - Human mobility and economic segregation 26.03.2024 58:54
Matt, Jess, and guest host Jonathan Jay discuss a study using cell phone data to see if living in cities gives us better economic integration, they explore whether AI will be developing our hypotheses in the future, and Matt naps with penguins. Journal club article: Human mobility and economic segregation study
Episode 143 - Workplace interventions for cardiometabolic health 27.02.2024 56:19
Matt, Jess, and guest host Amruta Nori-Sarma examine a study testing the effect of a workplace intervention for cardiometabolic health, they discuss mental health as a human right, and Amruta tells us about the power of Taylor Swift. Journal club article: Workplace intervention for cardiometabolic health study
Episode 142 - A blood-based screening for cancer? 30.01.2024 54:32
Matt, Jess, and guest host Salma Abdalla discuss a study testing the efficacy of a blood-based cancer screening tool, they debate the role of the workplace in mental health, and Salma sees if she can pronounce the word “bubbles” while sounding angry. Journal club article: Blood-based cancer screening study
Episode 141 - Do taxes and warning labels affect meat purchases? 02.01.2024 56:41
Matt, Jess, and first-time guest host Allegra Gordon discuss a study of the effect of taxes and warning labels on purchases of red meat, they lament the impact of disinformation campaigns, and Matt tells us how AI is going to take our grant writing jobs. Journal club article: Taxes and warning labels on red meat […]
Episode 140 - Neighborhood environment and childhood physical fitness 05.12.2023 57:13
Matt, Jess, and guest host Jonathan Jay discuss a study on child opportunity in the built environment and physical fitness, they debate whether to get rid of discussion sections, and Jon invites us to consider the Golden Bachelor. Journal club article: Neighborhood child opportunity and youth physical fitness study
Episode 139 - Wildfires and medical visits 03.10.2023 57:23
Matt, Jess, and guest host Amruta Nori-Sarma examine a study of the effect of proximity to wildfires on medical visits, they discuss housing as harm reduction, and Matt goes to Olive Garden. Journal club article: Wildfire exposure and health care study
Episode 138 - Can hearing aids prevent dementia? 05.09.2023 57:24
Matt, Jess, and guest host Salma Abdalla examine a study on the use of hearing aids to prevent dementia, they discuss whether loneliness is a public health problem (and, as usual, descend into talking about COVID), and Salma tells us the difference between coffee and concrete. Journal club article: Hearing aid and dementia study
Episode 137 - A breakthrough for meningitis vaccination? 01.08.2023 53:49
Matt and Jess go solo and Jess hosts for the first time! They discuss a study of the effectiveness of a new meningitis vaccine, whether active shooter drills do anything more than scare kids, and debate the best movie candy. Journal club article: Meningitis vaccine study
Episode 136 - The Best of Amazing and Amusing V (Chris Gill Edition) 27.06.2023 1:00:59
We are taking a one-month break this summer. Please enjoy this “best of” episode celebrating Chris’ contributions to the podcast.
Episode 135 - Is coffee bad for your heart? 30.05.2023 1:01:50
Matt, Jess, and Chris examine a crossover study of the effects of coffee consumption on heart health, they discuss the commercial determinants of health, and Chris gives a heartfelt goodbye to the podcast and to BU. Journal club article: Coffee consumption and heart health study
Episode 134 - Did we have any effect on COVID? 02.05.2023 56:14
Matt, Jess, and Chris discuss a complex ecologic study on the effect of various interventions for COVID, they debate whether living evidence syntheses can save science, and Chris updates us on what killed Beethoven. Journal club article: COVID-19 interventions study
Episode 133 - Do masks work for COVID? 04.04.2023 58:02
Matt, Jess, and Chris examine a meta-analysis on whether masks reduce respiratory virus transmission, they discuss the peer review madness, and Jess tells us about vibrating pills. Journal club article: Masks to reduce the spread of respiratory viruses study
Episode 132 - Gestational age at birth and cognitive outcomes 07.03.2023 1:05:12
Matt, Jess, and Chris discuss a study on the impact of gestational age at birth and cognitive outcomes, they debate who should be an author on an academic publication, and Jess tells us whether fish can recognize themselves. Journal club article: Gestational age and cognitive outcomes study
Episode 131 - Are magic mushrooms the answer to severe depression? 07.02.2023 59:33
Matt, Jess, and Chris discuss a phase 2 clinical trial on the use of psilocybin to treat severe depression, they lament the state of health literacy, and Chris finds out what happens when you give drugs to spiders. Journal club article: Psilocybin for major depression study
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