Population Health Exchange
Free Associations
Free Associations is about using a critical eye when reading journal articles or news coverage about research breakthroughs. With a sense of humor and a healthy dose of skepticism Boston University School of Public Health Professors Matt Fox, Chris Gill, and Jennifer Rider talk us through popular health studies and hyperbolic news headlines while teaching us how to ask the right questions. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Author
Population Health Exchange
Category
Podcast website
Latest episode
Oct 30, 2025
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Episodes
Episode 105 - Do sugar taxes really work to reduce sugar consumption? 24.08.2021 55:59
Matt and guest hosts Hoda S. Abdel Magid and Geetika Kalloo discuss a study on whether a tax on sugar sweetened beverages reduces consumption in South Africa, they talk through ethical guidelines for peer reviewers, and Simone Biles makes a return appearance. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 104 - Do birthdays cause COVID? 10.08.2021 50:53
Matt and guest hosts Bertha Hidalgo and Rachel Widome review a study on whether COVID transmission was more likely after a birthday, they discuss teaching epidemiology online, and Matt is pretty shocked by how much a journal costs. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 103 - More nurses, fewer deaths? 27.07.2021 48:23
Matt and Chris (in another summer two-person episode) review a new study on whether mandating the nurse to patient ratios can improve hospital outcomes, discuss what happened with the FDA approval of aducanumab, and Chris give us all the haikus he can. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 102 - Infecting mosquitos with a bacteria to prevent a virus? 13.07.2021 54:21
Matt and Chris (in a rare two-person episode) examine a study that tested infecting mosquitos with Wolbachia to prevent dengue, discuss whether we should be training students in “legal epidemiology”, and Chris tells us what happens when we drink with strangers. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 101 - MDMA for PTSD? 29.06.2021 55:03
Matt, Chris, and Don discuss a study on the effectiveness of MDMA for treatment of PTSD, they look at whether electronic passports for COVID vaccination are ethical and legal, and Matt goes into the history of peer review. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 100 - Is this show going down the tubes? 15.06.2021 59:36
Matt, Chris, and Don discuss a study on the effectiveness of ear tubes for ear infections, they consider the role of funders in international research, and Don goes cicada hunting. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 99 - A new drug for weight loss? 01.06.2021 57:05
Matt, Chris, and Jess examine a study of using a diabetes medication for weight loss for obesity, they discuss whether Africa needs unique solutions to COVID-19, and Jess is a bit sheepish. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 98 - Addressing malnutrition through the microbiome 18.05.2021 57:35
Matt, Chris, and Jess look at a study of whether or not a new microbiota-driven supplement does better at combatting malnutrition than traditional approaches, they discuss the importance of code review, and Matt looks to the future on mRNA vaccines. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 97 - More walkies for health? Pets and diabetes 04.05.2021 47:05
Matt, Chris, and Don discuss a study that asks whether pets and humans get diabetes in pairs, they debate who got the best of the new deal between Elsevier and University of California, and Chris and Matt share a love of a specific food. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 96 - Is the key to concussions in saliva? 20.04.2021 51:04
Matt, Chris, and Don look at some new research on whether a saliva test can detect concussions, they discuss how to take down the anti-vaxx industry, and Matt gets saucy. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 95 - The self-controlled podcast 06.04.2021 51:18
Matt, Chris, and Jess examine a study that looks at whether opioids increase the risk of fractures, they discuss what is likely to happen with measles when COVID is over, and Matt worries about lawsuits. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 94 - Quit clowning around 23.03.2021 59:13
Matt, Chris, and Jess may be freaked out by clowns but apparently they help kids with pain, they discuss the ethics of paying people to get vaccinated, and Chris goes out of this world. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 93 - Would you take half a vaccine? 09.03.2021 59:52
Matt, Chris, and Don examine a study that looks at whether smaller doses of yellow fever vaccine do just as well, they discuss whether one of the COVID vaccines is related to allergic reactions, and Chris gives us his best take on vaccines. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 92 - Getting spicy! Does spicy food cause or prevent GI cancers? 23.02.2021 57:26
Matt, Chris, and Don discuss a study that looks at whether spicy foods prevent gastrointestinal cancers in China, they debate the role of social media in public health messaging, and Matt repeats himself, yet again. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 91 - Cannabis in the driver's seat 09.02.2021 46:54
Matt, Chris, and Jess examine a study that looks at whether cannabis reduces the ability to drive well, they discuss whether COVID is affecting just the elderly, and Jess shows us she’s an animal lover. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 90 - The C-section implications 26.01.2021 57:32
Matt, Chris, and Jess discuss a study that looks at whether babies born by C-section are more likely to have infectious illnesses after birth, they debate who should be allowed to critique public health (and who even is public health?), and Chris quizzes us on traffic. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 89 - The best of Amazing and Amusing III 12.01.2021 56:07
Please enjoy this compilation of the best of Amazing and Amusing. Regular episodes will return in two weeks. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Short break: back in two weeks! 29.12.2020 0:32
Happy Holidays! We took a break from recording this week. We’ll be back in 2 weeks with another episode. Wishing you the best in the new year! Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 88 - Live with Dean Sandro Galea 15.12.2020 56:55
Matt, Chris, and Don are joined by Dean Sandro Galea for a live episode where we discuss a study that looks at whether decreases in COVID mortality are due to improvements in treatment, take audience questions, and Don measures our ears. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 87 - Survival after bariatric surgery 01.12.2020
Matt, Chris, and Don discuss a study that looks at whether survival after bariatric surgery is increasing, they lament patterns of prescribing hydroxychloroquine, and Matt gets prideful. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 86 - Vaccine misinformation blues 17.11.2020
Matt, Chris, and Don examine a study that looks at whether social media micro-influencers can increase flu vaccine uptake, they discuss an alliance of western states to review COVID vaccine safety data, and Chris gets batty. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 85 - Should I stay or should I go? Resuscitation and transport 03.11.2020 50:01
Matt, Chris, and Jess go over a study that looks at whether it is better to try to resuscitate people on site or transport them to hospital, they discuss whether there is a role for a precision approach in public health, and Chris tells us about his back yard. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 84 - Will convalescent plasma cure COVID? 20.10.2020 53:16
Matt, Chris, and Jess discuss a study on whether plasma from those who have recovered from COVID can be used to treat people with COVID, they explore whether masks might actually help make people immune to SARS-CoV-2, and Jess has the solution to forgetting your mask at home (though maybe not for everyone). Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 83 - Does vaccinating moms against RSV protect babies? 06.10.2020 51:06
Matt, Chris, and Don examine a study that looks at whether vaccinating mothers against RSV prevents their babies from getting infected, they discuss attacks on health workers in the time of COVID, and Chris brings us all down with a new COVID study. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
Episode 82 - Is Vitamin D a magic cure-all or a bust? 22.09.2020 56:14
Matt, Chris, and Don discuss a study that looks at whether vitamin D can prevent getting tuberculosis, they debate whether citation hacking is really a thing, and Don reminds us all that there is still amusement in the amazing and amusing. Music: "Duress" by Ketsa under CC BY-NC-ND 4.0 .
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